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Many singleton patches - please see the various changelogs for details.

Browse Source 
Quite a lot of nilfs2 work this time around.
 
 Notable patch series in this pull request are:
 
 "mul_u64_u64_div_u64: new implementation" by Nicolas Pitre, with
 assistance from Uwe Kleine-König.  Reimplement mul_u64_u64_div_u64() to
 provide (much) more accurate results.  The current implementation was
 causing Uwe some issues in the PWM drivers.
 
 "xz: Updates to license, filters, and compression options" from Lasse
 Collin.  Miscellaneous maintenance and kinor feature work to the xz
 decompressor.
 
 "Fix some GDB command error and add some GDB commands" from Kuan-Ying Lee.
 Fixes and enhancements to the gdb scripts.
 
 "treewide: add missing MODULE_DESCRIPTION() macros" from Jeff Johnson.
 Adds lots of MODULE_DESCRIPTIONs, thus fixing lots of warnings about this.
 
 "nilfs2: add support for some common ioctls" from Ryusuke Konishi.  Adds
 various commonly-available ioctls to nilfs2.
 
 "This series fixes a number of formatting issues in kernel doc comments"
 from Ryusuke Konishi does that.
 
 "nilfs2: prevent unexpected ENOENT propagation" from Ryusuke Konishi.  Fix
 issues where -ENOENT was being unintentionally and inappropriately
 returned to userspace.
 
 "nilfs2: assorted cleanups" from Huang Xiaojia.
 
 "nilfs2: fix potential issues with empty b-tree nodes" from Ryusuke
 Konishi fixes some issues which can occur on corrupted nilfs2 filesystems.
 
 "scripts/decode_stacktrace.sh: improve error reporting and usability" from
 Luca Ceresoli does those things.
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Merge tag 'mm-nonmm-stable-2024-09-21-07-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:
 "Many singleton patches - please see the various changelogs for
  details.

  Quite a lot of nilfs2 work this time around.

  Notable patch series in this pull request are:

   - "mul_u64_u64_div_u64: new implementation" by Nicolas Pitre, with
     assistance from Uwe Kleine-König. Reimplement mul_u64_u64_div_u64()
     to provide (much) more accurate results. The current implementation
     was causing Uwe some issues in the PWM drivers.

   - "xz: Updates to license, filters, and compression options" from
     Lasse Collin. Miscellaneous maintenance and kinor feature work to
     the xz decompressor.

   - "Fix some GDB command error and add some GDB commands" from
     Kuan-Ying Lee. Fixes and enhancements to the gdb scripts.

   - "treewide: add missing MODULE_DESCRIPTION() macros" from Jeff
     Johnson. Adds lots of MODULE_DESCRIPTIONs, thus fixing lots of
     warnings about this.

   - "nilfs2: add support for some common ioctls" from Ryusuke Konishi.
     Adds various commonly-available ioctls to nilfs2.

   - "This series fixes a number of formatting issues in kernel doc
     comments" from Ryusuke Konishi does that.

   - "nilfs2: prevent unexpected ENOENT propagation" from Ryusuke
     Konishi. Fix issues where -ENOENT was being unintentionally and
     inappropriately returned to userspace.

   - "nilfs2: assorted cleanups" from Huang Xiaojia.

   - "nilfs2: fix potential issues with empty b-tree nodes" from Ryusuke
     Konishi fixes some issues which can occur on corrupted nilfs2
     filesystems.

   - "scripts/decode_stacktrace.sh: improve error reporting and
     usability" from Luca Ceresoli does those things"

* tag 'mm-nonmm-stable-2024-09-21-07-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (103 commits)
  list: test: increase coverage of list_test_list_replace*()
  list: test: fix tests for list_cut_position()
  proc: use __auto_type more
  treewide: correct the typo 'retun'
  ocfs2: cleanup return value and mlog in ocfs2_global_read_info()
  nilfs2: remove duplicate 'unlikely()' usage
  nilfs2: fix potential oob read in nilfs_btree_check_delete()
  nilfs2: determine empty node blocks as corrupted
  nilfs2: fix potential null-ptr-deref in nilfs_btree_insert()
  user_namespace: use kmemdup_array() instead of kmemdup() for multiple allocation
  tools/mm: rm thp_swap_allocator_test when make clean
  squashfs: fix percpu address space issues in decompressor_multi_percpu.c
  lib: glob.c: added null check for character class
  nilfs2: refactor nilfs_segctor_thread()
  nilfs2: use kthread_create and kthread_stop for the log writer thread
  nilfs2: remove sc_timer_task
  nilfs2: do not repair reserved inode bitmap in nilfs_new_inode()
  nilfs2: eliminate the shared counter and spinlock for i_generation
  nilfs2: separate inode type information from i_state field
  nilfs2: use the BITS_PER_LONG macro
  ...
This commit is contained in:
Linus Torvalds 2024-09-21 08:20:50 -07:00
commit 7856a56541
123 changed files with 1678 additions and 854 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
Documentation/ABI/testing/sysfs-devices-memory
View File

@ -115,6 +115,6 @@ What: /sys/devices/system/memory/crash_hotplug
Date: Aug 2023
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
Description:
(RO) indicates whether or not the kernel directly supports
modifying the crash elfcorehdr for memory hot un/plug and/or
on/offline changes.
(RO) indicates whether or not the kernel updates relevant kexec
segments on memory hot un/plug and/or on/offline events, avoiding the
need to reload kdump kernel.

6
Documentation/ABI/testing/sysfs-devices-system-cpu
View File

@ -704,9 +704,9 @@ What: /sys/devices/system/cpu/crash_hotplug
Date: Aug 2023
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
Description:
(RO) indicates whether or not the kernel directly supports
modifying the crash elfcorehdr for CPU hot un/plug and/or
on/offline changes.
(RO) indicates whether or not the kernel updates relevant kexec
segments on memory hot un/plug and/or on/offline events, avoiding the
need to reload kdump kernel.
What: /sys/devices/system/cpu/enabled
Date: Nov 2022

5
Documentation/admin-guide/mm/memory-hotplug.rst
View File

@ -294,8 +294,9 @@ The following files are currently defined:
``crash_hotplug`` read-only: when changes to the system memory map
occur due to hot un/plug of memory, this file contains
'1' if the kernel updates the kdump capture kernel memory
map itself (via elfcorehdr), or '0' if userspace must update
the kdump capture kernel memory map.
map itself (via elfcorehdr and other relevant kexec
segments), or '0' if userspace must update the kdump
capture kernel memory map.
Availability depends on the CONFIG_MEMORY_HOTPLUG kernel
configuration option.

10
Documentation/core-api/cpu_hotplug.rst
View File

@ -737,8 +737,9 @@ can process the event further.
When changes to the CPUs in the system occur, the sysfs file
/sys/devices/system/cpu/crash_hotplug contains '1' if the kernel
updates the kdump capture kernel list of CPUs itself (via elfcorehdr),
or '0' if userspace must update the kdump capture kernel list of CPUs.
updates the kdump capture kernel list of CPUs itself (via elfcorehdr and
other relevant kexec segment), or '0' if userspace must update the kdump
capture kernel list of CPUs.
The availability depends on the CONFIG_HOTPLUG_CPU kernel configuration
option.
@ -750,8 +751,9 @@ file can be used in a udev rule as follows:
SUBSYSTEM=="cpu", ATTRS{crash_hotplug}=="1", GOTO="kdump_reload_end"
For a CPU hot un/plug event, if the architecture supports kernel updates
of the elfcorehdr (which contains the list of CPUs), then the rule skips
the unload-then-reload of the kdump capture kernel.
of the elfcorehdr (which contains the list of CPUs) and other relevant
kexec segments, then the rule skips the unload-then-reload of the kdump
capture kernel.
Kernel Inline Documentations Reference
======================================

141
Documentation/staging/xz.rst
View File

@ -1,3 +1,5 @@
.. SPDX-License-Identifier: 0BSD
============================
XZ data compression in Linux
============================
@ -6,62 +8,55 @@ Introduction
============
XZ is a general purpose data compression format with high compression
ratio and relatively fast decompression. The primary compression
algorithm (filter) is LZMA2. Additional filters can be used to improve
compression ratio even further. E.g. Branch/Call/Jump (BCJ) filters
improve compression ratio of executable data.
ratio. The XZ decompressor in Linux is called XZ Embedded. It supports
the LZMA2 filter and optionally also Branch/Call/Jump (BCJ) filters
for executable code. CRC32 is supported for integrity checking.
The XZ decompressor in Linux is called XZ Embedded. It supports
the LZMA2 filter and optionally also BCJ filters. CRC32 is supported
for integrity checking. The home page of XZ Embedded is at
<https://tukaani.org/xz/embedded.html>, where you can find the
latest version and also information about using the code outside
the Linux kernel.
See the `XZ Embedded`_ home page for the latest version which includes
a few optional extra features that aren't required in the Linux kernel
and information about using the code outside the Linux kernel.
For userspace, XZ Utils provide a zlib-like compression library
and a gzip-like command line tool. XZ Utils can be downloaded from
<https://tukaani.org/xz/>.
For userspace, `XZ Utils`_ provide a zlib-like compression library
and a gzip-like command line tool.
.. _XZ Embedded: https://tukaani.org/xz/embedded.html
.. _XZ Utils: https://tukaani.org/xz/
XZ related components in the kernel
===================================
The xz_dec module provides XZ decompressor with single-call (buffer
to buffer) and multi-call (stateful) APIs. The usage of the xz_dec
module is documented in include/linux/xz.h.
The xz_dec_test module is for testing xz_dec. xz_dec_test is not
useful unless you are hacking the XZ decompressor. xz_dec_test
allocates a char device major dynamically to which one can write
.xz files from userspace. The decompressed output is thrown away.
Keep an eye on dmesg to see diagnostics printed by xz_dec_test.
See the xz_dec_test source code for the details.
to buffer) and multi-call (stateful) APIs in include/linux/xz.h.
For decompressing the kernel image, initramfs, and initrd, there
is a wrapper function in lib/decompress_unxz.c. Its API is the
same as in other decompress_*.c files, which is defined in
include/linux/decompress/generic.h.
scripts/xz_wrap.sh is a wrapper for the xz command line tool found
from XZ Utils. The wrapper sets compression options to values suitable
for compressing the kernel image.
For kernel makefiles, three commands are provided for use with
``$(call if_changed)``. They require the xz tool from XZ Utils.
For kernel makefiles, two commands are provided for use with
$(call if_needed). The kernel image should be compressed with
$(call if_needed,xzkern) which will use a BCJ filter and a big LZMA2
dictionary. It will also append a four-byte trailer containing the
uncompressed size of the file, which is needed by the boot code.
Other things should be compressed with $(call if_needed,xzmisc)
which will use no BCJ filter and 1 MiB LZMA2 dictionary.
- ``$(call if_changed,xzkern)`` is for compressing the kernel image.
It runs the script scripts/xz_wrap.sh which uses arch-optimized
options and a big LZMA2 dictionary.
- ``$(call if_changed,xzkern_with_size)`` is like ``xzkern`` above but
this also appends a four-byte trailer containing the uncompressed size
of the file. The trailer is needed by the boot code on some archs.
- Other things can be compressed with ``$(call if_needed,xzmisc)``
which will use no BCJ filter and 1 MiB LZMA2 dictionary.
Notes on compression options
============================
Since the XZ Embedded supports only streams with no integrity check or
CRC32, make sure that you don't use some other integrity check type
when encoding files that are supposed to be decoded by the kernel. With
liblzma, you need to use either LZMA_CHECK_NONE or LZMA_CHECK_CRC32
when encoding. With the xz command line tool, use --check=none or
--check=crc32.
Since the XZ Embedded supports only streams with CRC32 or no integrity
check, make sure that you don't use some other integrity check type
when encoding files that are supposed to be decoded by the kernel.
With liblzma from XZ Utils, you need to use either ``LZMA_CHECK_CRC32``
or ``LZMA_CHECK_NONE`` when encoding. With the ``xz`` command line tool,
use ``--check=crc32`` or ``--check=none`` to override the default
``--check=crc64``.
Using CRC32 is strongly recommended unless there is some other layer
which will verify the integrity of the uncompressed data anyway.
@ -71,57 +66,33 @@ by the decoder; you can only change the integrity check type (or
disable it) for the actual uncompressed data.
In userspace, LZMA2 is typically used with dictionary sizes of several
megabytes. The decoder needs to have the dictionary in RAM, thus big
dictionaries cannot be used for files that are intended to be decoded
by the kernel. 1 MiB is probably the maximum reasonable dictionary
size for in-kernel use (maybe more is OK for initramfs). The presets
in XZ Utils may not be optimal when creating files for the kernel,
so don't hesitate to use custom settings. Example::
megabytes. The decoder needs to have the dictionary in RAM:
xz --check=crc32 --lzma2=dict=512KiB inputfile
- In multi-call mode the dictionary is allocated as part of the
decoder state. The reasonable maximum dictionary size for in-kernel
use will depend on the target hardware: a few megabytes is fine for
desktop systems while 64 KiB to 1 MiB might be more appropriate on
some embedded systems.
An exception to above dictionary size limitation is when the decoder
is used in single-call mode. Decompressing the kernel itself is an
example of this situation. In single-call mode, the memory usage
doesn't depend on the dictionary size, and it is perfectly fine to
use a big dictionary: for maximum compression, the dictionary should
be at least as big as the uncompressed data itself.
- In single-call mode the output buffer is used as the dictionary
buffer. That is, the size of the dictionary doesn't affect the
decompressor memory usage at all. Only the base data structures
are allocated which take a little less than 30 KiB of memory.
For the best compression, the dictionary should be at least
as big as the uncompressed data. A notable example of single-call
mode is decompressing the kernel itself (except on PowerPC).
Future plans
============
The compression presets in XZ Utils may not be optimal when creating
files for the kernel, so don't hesitate to use custom settings to,
for example, set the dictionary size. Also, xz may produce a smaller
file in single-threaded mode so setting that explicitly is recommended.
Example::
Creating a limited XZ encoder may be considered if people think it is
useful. LZMA2 is slower to compress than e.g. Deflate or LZO even at
the fastest settings, so it isn't clear if LZMA2 encoder is wanted
into the kernel.
xz --threads=1 --check=crc32 --lzma2=dict=512KiB inputfile
Support for limited random-access reading is planned for the
decompression code. I don't know if it could have any use in the
kernel, but I know that it would be useful in some embedded projects
outside the Linux kernel.
xz_dec API
==========
Conformance to the .xz file format specification
================================================
This is available with ``#include <linux/xz.h>``.
There are a couple of corner cases where things have been simplified
at expense of detecting errors as early as possible. These should not
matter in practice all, since they don't cause security issues. But
it is good to know this if testing the code e.g. with the test files
from XZ Utils.
Reporting bugs
==============
Before reporting a bug, please check that it's not fixed already
at upstream. See <https://tukaani.org/xz/embedded.html> to get the
latest code.
Report bugs to <lasse.collin@tukaani.org> or visit #tukaani on
Freenode and talk to Larhzu. I don't actively read LKML or other
kernel-related mailing lists, so if there's something I should know,
you should email to me personally or use IRC.
Don't bother Igor Pavlov with questions about the XZ implementation
in the kernel or about XZ Utils. While these two implementations
include essential code that is directly based on Igor Pavlov's code,
these implementations aren't maintained nor supported by him.
.. kernel-doc:: include/linux/xz.h

23
LICENSES/deprecated/0BSD Normal file
View File

@ -0,0 +1,23 @@
Valid-License-Identifier: 0BSD
SPDX-URL: https://spdx.org/licenses/0BSD.html
Usage-Guide:
To use the BSD Zero Clause License put the following SPDX tag/value
pair into a comment according to the placement guidelines in the
licensing rules documentation:
SPDX-License-Identifier: 0BSD
License-Text:
BSD Zero Clause License
Copyright (c) <year> <copyright holders>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

14
MAINTAINERS
View File

@ -8612,6 +8612,7 @@ M: Akinobu Mita <akinobu.mita@gmail.com>
S: Supported
F: Documentation/fault-injection/
F: lib/fault-inject.c
F: tools/testing/fault-injection/
FBTFT Framebuffer drivers
L: dri-devel@lists.freedesktop.org
@ -25459,6 +25460,19 @@ S: Maintained
F: drivers/spi/spi-xtensa-xtfpga.c
F: sound/soc/xtensa/xtfpga-i2s.c
XZ EMBEDDED
M: Lasse Collin <lasse.collin@tukaani.org>
S: Maintained
W: https://tukaani.org/xz/embedded.html
B: https://github.com/tukaani-project/xz-embedded/issues
C: irc://irc.libera.chat/tukaani
F: Documentation/staging/xz.rst
F: include/linux/decompress/unxz.h
F: include/linux/xz.h
F: lib/decompress_unxz.c
F: lib/xz/
F: scripts/xz_wrap.sh
YAM DRIVER FOR AX.25
M: Jean-Paul Roubelat <jpr@f6fbb.org>
L: linux-hams@vger.kernel.org

1
arch/arm/lib/xor-neon.c
View File

@ -8,6 +8,7 @@
#include <linux/raid/xor.h>
#include <linux/module.h>
MODULE_DESCRIPTION("NEON accelerated XOR implementation");
MODULE_LICENSE("GPL");
#ifndef __ARM_NEON__

2
arch/arm/mach-omap2/omap-mpuss-lowpower.c
View File

@ -333,7 +333,7 @@ int omap4_hotplug_cpu(unsigned int cpu, unsigned int power_state)
omap_pm_ops.scu_prepare(cpu, power_state);
/*
* CPU never retuns back if targeted power state is OFF mode.
* CPU never returns back if targeted power state is OFF mode.
* CPU ONLINE follows normal CPU ONLINE ptah via
* omap4_secondary_startup().
*/

5
arch/arm64/boot/Makefile
View File

@ -17,7 +17,7 @@
OBJCOPYFLAGS_Image :=-O binary -R .note -R .note.gnu.build-id -R .comment -S
targets := Image Image.bz2 Image.gz Image.lz4 Image.lzma Image.lzo \
Image.zst image.fit
Image.zst Image.xz image.fit
$(obj)/Image: vmlinux FORCE
$(call if_changed,objcopy)
@ -40,6 +40,9 @@ $(obj)/Image.lzo: $(obj)/Image FORCE
$(obj)/Image.zst: $(obj)/Image FORCE
$(call if_changed,zstd)
$(obj)/Image.xz: $(obj)/Image FORCE
$(call if_changed,xzkern)
$(obj)/image.fit: $(obj)/Image $(obj)/dts/dtbs-list FORCE
$(call if_changed,fit)

3
arch/powerpc/boot/xz_config.h
View File

@ -50,11 +50,8 @@ static inline void put_unaligned_be32(u32 val, void *p)
/* prevent the inclusion of the xz-preboot MM headers */
#define DECOMPR_MM_H
#define memmove memmove
#define XZ_EXTERN static
/* xz.h needs to be included directly since we need enum xz_mode */
#include "../../../include/linux/xz.h"
#undef XZ_EXTERN
#endif

1
arch/riscv/Kconfig
View File

@ -158,6 +158,7 @@ config RISCV
select HAVE_KERNEL_LZO if !XIP_KERNEL && !EFI_ZBOOT
select HAVE_KERNEL_UNCOMPRESSED if !XIP_KERNEL && !EFI_ZBOOT
select HAVE_KERNEL_ZSTD if !XIP_KERNEL && !EFI_ZBOOT
select HAVE_KERNEL_XZ if !XIP_KERNEL && !EFI_ZBOOT
select HAVE_KPROBES if !XIP_KERNEL
select HAVE_KRETPROBES if !XIP_KERNEL
# https://github.com/ClangBuiltLinux/linux/issues/1881

6
arch/riscv/Makefile
View File

@ -159,6 +159,7 @@ boot-image-$(CONFIG_KERNEL_LZ4) := Image.lz4
boot-image-$(CONFIG_KERNEL_LZMA) := Image.lzma
boot-image-$(CONFIG_KERNEL_LZO) := Image.lzo
boot-image-$(CONFIG_KERNEL_ZSTD) := Image.zst
boot-image-$(CONFIG_KERNEL_XZ) := Image.xz
ifdef CONFIG_RISCV_M_MODE
boot-image-$(CONFIG_ARCH_CANAAN) := loader.bin
endif
@ -183,12 +184,12 @@ endif
vdso-install-y += arch/riscv/kernel/vdso/vdso.so.dbg
vdso-install-$(CONFIG_COMPAT) += arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg
BOOT_TARGETS := Image Image.gz Image.bz2 Image.lz4 Image.lzma Image.lzo Image.zst loader loader.bin xipImage vmlinuz.efi
BOOT_TARGETS := Image Image.gz Image.bz2 Image.lz4 Image.lzma Image.lzo Image.zst Image.xz loader loader.bin xipImage vmlinuz.efi
all: $(notdir $(KBUILD_IMAGE))
loader.bin: loader
Image.gz Image.bz2 Image.lz4 Image.lzma Image.lzo Image.zst loader xipImage vmlinuz.efi: Image
Image.gz Image.bz2 Image.lz4 Image.lzma Image.lzo Image.zst Image.xz loader xipImage vmlinuz.efi: Image
$(BOOT_TARGETS): vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
@ -225,6 +226,7 @@ define archhelp
echo ' Image.lzma - Compressed kernel image (arch/riscv/boot/Image.lzma)'
echo ' Image.lzo - Compressed kernel image (arch/riscv/boot/Image.lzo)'
echo ' Image.zst - Compressed kernel image (arch/riscv/boot/Image.zst)'
echo ' Image.xz - Compressed kernel image (arch/riscv/boot/Image.xz)'
echo ' vmlinuz.efi - Compressed EFI kernel image (arch/riscv/boot/vmlinuz.efi)'
echo ' Default when CONFIG_EFI_ZBOOT=y'
echo ' xipImage - Execute-in-place kernel image (arch/riscv/boot/xipImage)'

3
arch/riscv/boot/Makefile
View File

@ -64,6 +64,9 @@ $(obj)/Image.lzo: $(obj)/Image FORCE
$(obj)/Image.zst: $(obj)/Image FORCE
$(call if_changed,zstd)
$(obj)/Image.xz: $(obj)/Image FORCE
$(call if_changed,xzkern)
$(obj)/loader.bin: $(obj)/loader FORCE
$(call if_changed,objcopy)

1
arch/x86/mm/testmmiotrace.c
View File

@ -144,3 +144,4 @@ static void __exit cleanup(void)
module_init(init);
module_exit(cleanup);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Test module for mmiotrace");

2
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
View File

@ -231,7 +231,7 @@ struct dpu_crtc_state {
container_of(x, struct dpu_crtc_state, base)
/**
* dpu_crtc_frame_pending - retun the number of pending frames
* dpu_crtc_frame_pending - return the number of pending frames
* @crtc: Pointer to drm crtc object
*/
static inline int dpu_crtc_frame_pending(struct drm_crtc *crtc)

2
drivers/gpu/drm/msm/msm_debugfs.c
View File

@ -357,12 +357,10 @@ void msm_debugfs_init(struct drm_minor *minor)
if (priv->kms && priv->kms->funcs->debugfs_init)
priv->kms->funcs->debugfs_init(priv->kms, minor);
#ifdef CONFIG_FAULT_INJECTION
fault_create_debugfs_attr("fail_gem_alloc", minor->debugfs_root,
&fail_gem_alloc);
fault_create_debugfs_attr("fail_gem_iova", minor->debugfs_root,
&fail_gem_iova);
#endif
}
#endif

3
drivers/gpu/drm/msm/msm_drv.c
View File

@ -7,6 +7,7 @@
#include <linux/dma-mapping.h>
#include <linux/fault-inject.h>
#include <linux/debugfs.h>
#include <linux/of_address.h>
#include <linux/uaccess.h>
@ -58,10 +59,8 @@ static bool modeset = true;
MODULE_PARM_DESC(modeset, "Use kernel modesetting [KMS] (1=on (default), 0=disable)");
module_param(modeset, bool, 0600);
#ifdef CONFIG_FAULT_INJECTION
DECLARE_FAULT_ATTR(fail_gem_alloc);
DECLARE_FAULT_ATTR(fail_gem_iova);
#endif
static int msm_drm_uninit(struct device *dev)
{

4
drivers/gpu/drm/msm/msm_drv.h
View File

@ -33,12 +33,8 @@
#include <drm/msm_drm.h>
#include <drm/drm_gem.h>
#ifdef CONFIG_FAULT_INJECTION
extern struct fault_attr fail_gem_alloc;
extern struct fault_attr fail_gem_iova;
#else
# define should_fail(attr, size) 0
#endif
struct msm_kms;
struct msm_gpu;

7
drivers/gpu/drm/xe/xe_debugfs.c
View File

@ -6,6 +6,7 @@
#include "xe_debugfs.h"
#include <linux/debugfs.h>
#include <linux/fault-inject.h>
#include <linux/string_helpers.h>
#include <drm/drm_debugfs.h>
@ -26,10 +27,7 @@
#include "xe_vm.h"
#endif
#ifdef CONFIG_FAULT_INJECTION
#include <linux/fault-inject.h> /* XXX: fault-inject.h is broken */
DECLARE_FAULT_ATTR(gt_reset_failure);
#endif
static struct xe_device *node_to_xe(struct drm_info_node *node)
{
@ -213,8 +211,5 @@ void xe_debugfs_register(struct xe_device *xe)
for_each_gt(gt, xe, id)
xe_gt_debugfs_register(gt);
#ifdef CONFIG_FAULT_INJECTION
fault_create_debugfs_attr("fail_gt_reset", root, &gt_reset_failure);
#endif
}

10
drivers/gpu/drm/xe/xe_gt.h
View File

@ -6,6 +6,8 @@
#ifndef _XE_GT_H_
#define _XE_GT_H_
#include <linux/fault-inject.h>
#include <drm/drm_util.h>
#include "xe_device.h"
@ -19,19 +21,11 @@
#define CCS_MASK(gt) (((gt)->info.engine_mask & XE_HW_ENGINE_CCS_MASK) >> XE_HW_ENGINE_CCS0)
#ifdef CONFIG_FAULT_INJECTION
#include <linux/fault-inject.h> /* XXX: fault-inject.h is broken */
extern struct fault_attr gt_reset_failure;
static inline bool xe_fault_inject_gt_reset(void)
{
return should_fail(&gt_reset_failure, 1);
}
#else
static inline bool xe_fault_inject_gt_reset(void)
{
return false;
}
#endif
struct xe_gt *xe_gt_alloc(struct xe_tile *tile);
int xe_gt_init_hwconfig(struct xe_gt *gt);

2
drivers/infiniband/core/sa_query.c
View File

@ -1420,7 +1420,7 @@ enum opa_pr_supported {
/*
* opa_pr_query_possible - Check if current PR query can be an OPA query.
*
* Retuns PR_NOT_SUPPORTED if a path record query is not
* Returns PR_NOT_SUPPORTED if a path record query is not
* possible, PR_OPA_SUPPORTED if an OPA path record query
* is possible and PR_IB_SUPPORTED if an IB path record
* query is possible.

2
drivers/input/misc/wistron_btns.c
View File

@ -1075,7 +1075,7 @@ static void wistron_led_init(struct device *parent)
}
if (leds_present & FE_MAIL_LED) {
/* bios_get_default_setting(MAIL) always retuns 0, so just turn the led off */
/* bios_get_default_setting(MAIL) always returns 0, so just turn the led off */
wistron_mail_led.brightness = LED_OFF;
if (led_classdev_register(parent, &wistron_mail_led))
leds_present &= ~FE_MAIL_LED;

1
drivers/iommu/iommufd/selftest.c
View File

@ -7,6 +7,7 @@
#include <linux/iommu.h>
#include <linux/xarray.h>
#include <linux/file.h>
#include <linux/debugfs.h>
#include <linux/anon_inodes.h>
#include <linux/fault-inject.h>
#include <linux/platform_device.h>

1
drivers/misc/xilinx_tmr_inject.c
View File

@ -12,6 +12,7 @@
#include <asm/xilinx_mb_manager.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/debugfs.h>
#include <linux/platform_device.h>
#include <linux/fault-inject.h>

2
drivers/mtd/nand/raw/nandsim.c
View File

@ -1381,7 +1381,7 @@ static inline union ns_mem *NS_GET_PAGE(struct nandsim *ns)
}
/*
* Retuns a pointer to the current byte, within the current page.
* Returns a pointer to the current byte, within the current page.
*/
static inline u_char *NS_PAGE_BYTE_OFF(struct nandsim *ns)
{

1
drivers/nvme/host/fault_inject.c
View File

@ -6,6 +6,7 @@
*/
#include <linux/moduleparam.h>
#include <linux/debugfs.h>
#include "nvme.h"
static DECLARE_FAULT_ATTR(fail_default_attr);

2
drivers/scsi/bfa/bfa_fcs.c
View File

@ -1431,7 +1431,7 @@ bfa_cb_lps_flogo_comp(void *bfad, void *uarg)
* param[in] vf_id - VF_ID
*
* return
* If lookup succeeds, retuns fcs vf object, otherwise returns NULL
* If lookup succeeds, returns fcs vf object, otherwise returns NULL
*/
bfa_fcs_vf_t *
bfa_fcs_vf_lookup(struct bfa_fcs_s *fcs, u16 vf_id)

2
drivers/scsi/pmcraid.c
View File

@ -4009,7 +4009,7 @@ static void pmcraid_tasklet_function(unsigned long instance)
* This routine un-registers registered interrupt handler and
* also frees irqs/vectors.
*
* Retun Value
* Return Value
* None
*/
static

1
drivers/ufs/core/ufs-fault-injection.c
View File

@ -3,6 +3,7 @@
#include <linux/kconfig.h>
#include <linux/types.h>
#include <linux/fault-inject.h>
#include <linux/debugfs.h>
#include <linux/module.h>
#include <ufs/ufshcd.h>
#include "ufs-fault-injection.h"

11
fs/nfs/nfs4xdr.c
View File

@ -3447,7 +3447,7 @@ static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, ui
*res = be32_to_cpup(p);
bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
}
dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
dprintk("%s: link support=%s\n", __func__, str_false_true(*res == 0));
return 0;
}
@ -3465,7 +3465,7 @@ static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap,
*res = be32_to_cpup(p);
bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
}
dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
dprintk("%s: symlink support=%s\n", __func__, str_false_true(*res == 0));
return 0;
}
@ -3607,7 +3607,7 @@ static int decode_attr_case_insensitive(struct xdr_stream *xdr, uint32_t *bitmap
*res = be32_to_cpup(p);
bitmap[0] &= ~FATTR4_WORD0_CASE_INSENSITIVE;
}
dprintk("%s: case_insensitive=%s\n", __func__, *res == 0 ? "false" : "true");
dprintk("%s: case_insensitive=%s\n", __func__, str_false_true(*res == 0));
return 0;
}
@ -3625,7 +3625,7 @@ static int decode_attr_case_preserving(struct xdr_stream *xdr, uint32_t *bitmap,
*res = be32_to_cpup(p);
bitmap[0] &= ~FATTR4_WORD0_CASE_PRESERVING;
}
dprintk("%s: case_preserving=%s\n", __func__, *res == 0 ? "false" : "true");
dprintk("%s: case_preserving=%s\n", __func__, str_false_true(*res == 0));
return 0;
}
@ -4333,8 +4333,7 @@ static int decode_attr_xattrsupport(struct xdr_stream *xdr, uint32_t *bitmap,
*res = be32_to_cpup(p);
bitmap[2] &= ~FATTR4_WORD2_XATTR_SUPPORT;
}
dprintk("%s: XATTR support=%s\n", __func__,
*res == 0 ? "false" : "true");
dprintk("%s: XATTR support=%s\n", __func__, str_false_true(*res == 0));
return 0;
}

2
fs/nilfs2/alloc.h
View File

@ -37,7 +37,7 @@ void *nilfs_palloc_block_get_entry(const struct inode *, __u64,
int nilfs_palloc_count_max_entries(struct inode *, u64, u64 *);
/**
* nilfs_palloc_req - persistent allocator request and reply
* struct nilfs_palloc_req - persistent allocator request and reply
* @pr_entry_nr: entry number (vblocknr or inode number)
* @pr_desc_bh: buffer head of the buffer containing block group descriptors
* @pr_bitmap_bh: buffer head of the buffer containing a block group bitmap

2
fs/nilfs2/bmap.c
View File

@ -349,7 +349,7 @@ int nilfs_bmap_propagate(struct nilfs_bmap *bmap, struct buffer_head *bh)
}
/**
* nilfs_bmap_lookup_dirty_buffers -
* nilfs_bmap_lookup_dirty_buffers - collect dirty block buffers
* @bmap: bmap
* @listp: pointer to buffer head list
*/

20
fs/nilfs2/bmap.h
View File

@ -44,6 +44,19 @@ struct nilfs_bmap_stats {
/**
* struct nilfs_bmap_operations - bmap operation table
* @bop_lookup: single block search operation
* @bop_lookup_contig: consecutive block search operation
* @bop_insert: block insertion operation
* @bop_delete: block delete operation
* @bop_clear: block mapping resource release operation
* @bop_propagate: operation to propagate dirty state towards the
* mapping root
* @bop_lookup_dirty_buffers: operation to collect dirty block buffers
* @bop_assign: disk block address assignment operation
* @bop_mark: operation to mark in-use blocks as dirty for
* relocation by GC
* @bop_seek_key: find valid block key operation
* @bop_last_key: find last valid block key operation
*/
struct nilfs_bmap_operations {
int (*bop_lookup)(const struct nilfs_bmap *, __u64, int, __u64 *);
@ -66,7 +79,7 @@ struct nilfs_bmap_operations {
int (*bop_seek_key)(const struct nilfs_bmap *, __u64, __u64 *);
int (*bop_last_key)(const struct nilfs_bmap *, __u64 *);
/* The following functions are internal use only. */
/* private: internal use only */
int (*bop_check_insert)(const struct nilfs_bmap *, __u64);
int (*bop_check_delete)(struct nilfs_bmap *, __u64);
int (*bop_gather_data)(struct nilfs_bmap *, __u64 *, __u64 *, int);
@ -74,9 +87,8 @@ struct nilfs_bmap_operations {
#define NILFS_BMAP_SIZE (NILFS_INODE_BMAP_SIZE * sizeof(__le64))
#define NILFS_BMAP_KEY_BIT (sizeof(unsigned long) * 8 /* CHAR_BIT */)
#define NILFS_BMAP_NEW_PTR_INIT \
(1UL << (sizeof(unsigned long) * 8 /* CHAR_BIT */ - 1))
#define NILFS_BMAP_KEY_BIT BITS_PER_LONG
#define NILFS_BMAP_NEW_PTR_INIT (1UL << (BITS_PER_LONG - 1))
static inline int nilfs_bmap_is_new_ptr(unsigned long ptr)
{

63
fs/nilfs2/btnode.c
View File

@ -179,11 +179,32 @@ void nilfs_btnode_delete(struct buffer_head *bh)
}
/**
* nilfs_btnode_prepare_change_key
* prepare to move contents of the block for old key to one of new key.
* the old buffer will not be removed, but might be reused for new buffer.
* it might return -ENOMEM because of memory allocation errors,
* and might return -EIO because of disk read errors.
* nilfs_btnode_prepare_change_key - prepare to change the search key of a
* b-tree node block
* @btnc: page cache in which the b-tree node block is buffered
* @ctxt: structure for exchanging context information for key change
*
* nilfs_btnode_prepare_change_key() prepares to move the contents of the
* b-tree node block of the old key given in the "oldkey" member of @ctxt to
* the position of the new key given in the "newkey" member of @ctxt in the
* page cache @btnc. Here, the key of the block is an index in units of
* blocks, and if the page and block sizes match, it matches the page index
* in the page cache.
*
* If the page size and block size match, this function attempts to move the
* entire folio, and in preparation for this, inserts the original folio into
* the new index of the cache. If this insertion fails or if the page size
* and block size are different, it falls back to a copy preparation using
* nilfs_btnode_create_block(), inserts a new block at the position
* corresponding to "newkey", and stores the buffer head pointer in the
* "newbh" member of @ctxt.
*
* Note that the current implementation does not support folio sizes larger
* than the page size.
*
* Return: 0 on success, or the following negative error code on failure.
* * %-EIO - I/O error (metadata corruption).
* * %-ENOMEM - Insufficient memory available.
*/
int nilfs_btnode_prepare_change_key(struct address_space *btnc,
struct nilfs_btnode_chkey_ctxt *ctxt)
@ -245,8 +266,21 @@ retry:
}
/**
* nilfs_btnode_commit_change_key
* commit the change_key operation prepared by prepare_change_key().
* nilfs_btnode_commit_change_key - commit the change of the search key of
* a b-tree node block
* @btnc: page cache in which the b-tree node block is buffered
* @ctxt: structure for exchanging context information for key change
*
* nilfs_btnode_commit_change_key() executes the key change based on the
* context @ctxt prepared by nilfs_btnode_prepare_change_key(). If no valid
* block buffer is prepared in "newbh" of @ctxt (i.e., a full folio move),
* this function removes the folio from the old index and completes the move.
* Otherwise, it copies the block data and inherited flag states of "oldbh"
* to "newbh" and clears the "oldbh" from the cache. In either case, the
* relocated buffer is marked as dirty.
*
* As with nilfs_btnode_prepare_change_key(), the current implementation does
* not support folio sizes larger than the page size.
*/
void nilfs_btnode_commit_change_key(struct address_space *btnc,
struct nilfs_btnode_chkey_ctxt *ctxt)
@ -285,8 +319,19 @@ void nilfs_btnode_commit_change_key(struct address_space *btnc,
}
/**
* nilfs_btnode_abort_change_key
* abort the change_key operation prepared by prepare_change_key().
* nilfs_btnode_abort_change_key - abort the change of the search key of a
* b-tree node block
* @btnc: page cache in which the b-tree node block is buffered
* @ctxt: structure for exchanging context information for key change
*
* nilfs_btnode_abort_change_key() cancels the key change associated with the
* context @ctxt prepared via nilfs_btnode_prepare_change_key() and performs
* any necessary cleanup. If no valid block buffer is prepared in "newbh" of
* @ctxt, this function removes the folio from the destination index and aborts
* the move. Otherwise, it clears "newbh" from the cache.
*
* As with nilfs_btnode_prepare_change_key(), the current implementation does
* not support folio sizes larger than the page size.
*/
void nilfs_btnode_abort_change_key(struct address_space *btnc,
struct nilfs_btnode_chkey_ctxt *ctxt)

12
fs/nilfs2/btree.c
View File

@ -350,7 +350,7 @@ static int nilfs_btree_node_broken(const struct nilfs_btree_node *node,
if (unlikely(level < NILFS_BTREE_LEVEL_NODE_MIN ||
level >= NILFS_BTREE_LEVEL_MAX ||
(flags & NILFS_BTREE_NODE_ROOT) ||
nchildren < 0 ||
nchildren <= 0 ||
nchildren > NILFS_BTREE_NODE_NCHILDREN_MAX(size))) {
nilfs_crit(inode->i_sb,
"bad btree node (ino=%lu, blocknr=%llu): level = %d, flags = 0x%x, nchildren = %d",
@ -381,7 +381,8 @@ static int nilfs_btree_root_broken(const struct nilfs_btree_node *node,
if (unlikely(level < NILFS_BTREE_LEVEL_NODE_MIN ||
level >= NILFS_BTREE_LEVEL_MAX ||
nchildren < 0 ||
nchildren > NILFS_BTREE_ROOT_NCHILDREN_MAX)) {
nchildren > NILFS_BTREE_ROOT_NCHILDREN_MAX ||
(nchildren == 0 && level > NILFS_BTREE_LEVEL_NODE_MIN))) {
nilfs_crit(inode->i_sb,
"bad btree root (ino=%lu): level = %d, flags = 0x%x, nchildren = %d",
inode->i_ino, level, flags, nchildren);
@ -1658,13 +1659,16 @@ static int nilfs_btree_check_delete(struct nilfs_bmap *btree, __u64 key)
int nchildren, ret;
root = nilfs_btree_get_root(btree);
nchildren = nilfs_btree_node_get_nchildren(root);
if (unlikely(nchildren == 0))
return 0;
switch (nilfs_btree_height(btree)) {
case 2:
bh = NULL;
node = root;
break;
case 3:
nchildren = nilfs_btree_node_get_nchildren(root);
if (nchildren > 1)
return 0;
ptr = nilfs_btree_node_get_ptr(root, nchildren - 1,
@ -1673,12 +1677,12 @@ static int nilfs_btree_check_delete(struct nilfs_bmap *btree, __u64 key)
if (ret < 0)
return ret;
node = (struct nilfs_btree_node *)bh->b_data;
nchildren = nilfs_btree_node_get_nchildren(node);
break;
default:
return 0;
}
nchildren = nilfs_btree_node_get_nchildren(node);
maxkey = nilfs_btree_node_get_key(node, nchildren - 1);
nextmaxkey = (nchildren > 1) ?
nilfs_btree_node_get_key(node, nchildren - 2) : 0;

1
fs/nilfs2/btree.h
View File

@ -24,6 +24,7 @@
* @bp_index: index of child node
* @bp_oldreq: ptr end request for old ptr
* @bp_newreq: ptr alloc request for new ptr
* @bp_ctxt: context information for changing the key of a b-tree node block
* @bp_op: rebalance operation
*/
struct nilfs_btree_path {

50
fs/nilfs2/cpfile.c
View File

@ -125,10 +125,17 @@ static void nilfs_cpfile_block_init(struct inode *cpfile,
}
}
static inline int nilfs_cpfile_get_header_block(struct inode *cpfile,
static int nilfs_cpfile_get_header_block(struct inode *cpfile,
struct buffer_head **bhp)
{
return nilfs_mdt_get_block(cpfile, 0, 0, NULL, bhp);
int err = nilfs_mdt_get_block(cpfile, 0, 0, NULL, bhp);
if (unlikely(err == -ENOENT)) {
nilfs_error(cpfile->i_sb,
"missing header block in checkpoint metadata");
err = -EIO;
}
return err;
}
static inline int nilfs_cpfile_get_checkpoint_block(struct inode *cpfile,
@ -283,14 +290,9 @@ int nilfs_cpfile_create_checkpoint(struct inode *cpfile, __u64 cno)
down_write(&NILFS_MDT(cpfile)->mi_sem);
ret = nilfs_cpfile_get_header_block(cpfile, &header_bh);
if (unlikely(ret < 0)) {
if (ret == -ENOENT) {
nilfs_error(cpfile->i_sb,
"checkpoint creation failed due to metadata corruption.");
ret = -EIO;
}
if (unlikely(ret < 0))
goto out_sem;
}
ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 1, &cp_bh);
if (unlikely(ret < 0))
goto out_header;
@ -704,9 +706,15 @@ ssize_t nilfs_cpfile_get_cpinfo(struct inode *cpfile, __u64 *cnop, int mode,
}
/**
* nilfs_cpfile_delete_checkpoint -
* @cpfile:
* @cno:
* nilfs_cpfile_delete_checkpoint - delete a checkpoint
* @cpfile: checkpoint file inode
* @cno: checkpoint number to delete
*
* Return: 0 on success, or the following negative error code on failure.
* * %-EBUSY - Checkpoint in use (snapshot specified).
* * %-EIO - I/O error (including metadata corruption).
* * %-ENOENT - No valid checkpoint found.
* * %-ENOMEM - Insufficient memory available.
*/
int nilfs_cpfile_delete_checkpoint(struct inode *cpfile, __u64 cno)
{
@ -968,21 +976,15 @@ static int nilfs_cpfile_clear_snapshot(struct inode *cpfile, __u64 cno)
}
/**
* nilfs_cpfile_is_snapshot -
* nilfs_cpfile_is_snapshot - determine if checkpoint is a snapshot
* @cpfile: inode of checkpoint file
* @cno: checkpoint number
*
* Description:
*
* Return Value: On success, 1 is returned if the checkpoint specified by
* @cno is a snapshot, or 0 if not. On error, one of the following negative
* error codes is returned.
*
* %-EIO - I/O error.
*
* %-ENOMEM - Insufficient amount of memory available.
*
* %-ENOENT - No such checkpoint.
* Return: 1 if the checkpoint specified by @cno is a snapshot, 0 if not, or
* the following negative error code on failure.
* * %-EIO - I/O error (including metadata corruption).
* * %-ENOENT - No such checkpoint.
* * %-ENOMEM - Insufficient memory available.
*/
int nilfs_cpfile_is_snapshot(struct inode *cpfile, __u64 cno)
{

15
fs/nilfs2/dat.c
View File

@ -271,18 +271,15 @@ void nilfs_dat_abort_update(struct inode *dat,
}
/**
* nilfs_dat_mark_dirty -
* nilfs_dat_mark_dirty - mark the DAT block buffer containing the specified
* virtual block address entry as dirty
* @dat: DAT file inode
* @vblocknr: virtual block number
*
* Description:
*
* Return Value: On success, 0 is returned. On error, one of the following
* negative error codes is returned.
*
* %-EIO - I/O error.
*
* %-ENOMEM - Insufficient amount of memory available.
* Return: 0 on success, or the following negative error code on failure.
* * %-EINVAL - Invalid DAT entry (internal code).
* * %-EIO - I/O error (including metadata corruption).
* * %-ENOMEM - Insufficient memory available.
*/
int nilfs_dat_mark_dirty(struct inode *dat, __u64 vblocknr)
{

44
fs/nilfs2/dir.c
View File

@ -231,37 +231,6 @@ static struct nilfs_dir_entry *nilfs_next_entry(struct nilfs_dir_entry *p)
nilfs_rec_len_from_disk(p->rec_len));
}
static unsigned char
nilfs_filetype_table[NILFS_FT_MAX] = {
[NILFS_FT_UNKNOWN] = DT_UNKNOWN,
[NILFS_FT_REG_FILE] = DT_REG,
[NILFS_FT_DIR] = DT_DIR,
[NILFS_FT_CHRDEV] = DT_CHR,
[NILFS_FT_BLKDEV] = DT_BLK,
[NILFS_FT_FIFO] = DT_FIFO,
[NILFS_FT_SOCK] = DT_SOCK,
[NILFS_FT_SYMLINK] = DT_LNK,
};
#define S_SHIFT 12
static unsigned char
nilfs_type_by_mode[(S_IFMT >> S_SHIFT) + 1] = {
[S_IFREG >> S_SHIFT] = NILFS_FT_REG_FILE,
[S_IFDIR >> S_SHIFT] = NILFS_FT_DIR,
[S_IFCHR >> S_SHIFT] = NILFS_FT_CHRDEV,
[S_IFBLK >> S_SHIFT] = NILFS_FT_BLKDEV,
[S_IFIFO >> S_SHIFT] = NILFS_FT_FIFO,
[S_IFSOCK >> S_SHIFT] = NILFS_FT_SOCK,
[S_IFLNK >> S_SHIFT] = NILFS_FT_SYMLINK,
};
static void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode *inode)
{
umode_t mode = inode->i_mode;
de->file_type = nilfs_type_by_mode[(mode & S_IFMT)>>S_SHIFT];
}
static int nilfs_readdir(struct file *file, struct dir_context *ctx)
{
loff_t pos = ctx->pos;
@ -297,10 +266,7 @@ static int nilfs_readdir(struct file *file, struct dir_context *ctx)
if (de->inode) {
unsigned char t;
if (de->file_type < NILFS_FT_MAX)
t = nilfs_filetype_table[de->file_type];
else
t = DT_UNKNOWN;
t = fs_ftype_to_dtype(de->file_type);
if (!dir_emit(ctx, de->name, de->name_len,
le64_to_cpu(de->inode), t)) {
@ -444,7 +410,7 @@ void nilfs_set_link(struct inode *dir, struct nilfs_dir_entry *de,
err = nilfs_prepare_chunk(folio, from, to);
BUG_ON(err);
de->inode = cpu_to_le64(inode->i_ino);
nilfs_set_de_type(de, inode);
de->file_type = fs_umode_to_ftype(inode->i_mode);
nilfs_commit_chunk(folio, mapping, from, to);
inode_set_mtime_to_ts(dir, inode_set_ctime_current(dir));
}
@ -531,7 +497,7 @@ got_it:
de->name_len = namelen;
memcpy(de->name, name, namelen);
de->inode = cpu_to_le64(inode->i_ino);
nilfs_set_de_type(de, inode);
de->file_type = fs_umode_to_ftype(inode->i_mode);
nilfs_commit_chunk(folio, folio->mapping, from, to);
inode_set_mtime_to_ts(dir, inode_set_ctime_current(dir));
nilfs_mark_inode_dirty(dir);
@ -612,14 +578,14 @@ int nilfs_make_empty(struct inode *inode, struct inode *parent)
de->rec_len = nilfs_rec_len_to_disk(NILFS_DIR_REC_LEN(1));
memcpy(de->name, ".\0\0", 4);
de->inode = cpu_to_le64(inode->i_ino);
nilfs_set_de_type(de, inode);
de->file_type = fs_umode_to_ftype(inode->i_mode);
de = (struct nilfs_dir_entry *)(kaddr + NILFS_DIR_REC_LEN(1));
de->name_len = 2;
de->rec_len = nilfs_rec_len_to_disk(chunk_size - NILFS_DIR_REC_LEN(1));
de->inode = cpu_to_le64(parent->i_ino);
memcpy(de->name, "..\0", 4);
nilfs_set_de_type(de, inode);
de->file_type = fs_umode_to_ftype(inode->i_mode);
kunmap_local(kaddr);
nilfs_commit_chunk(folio, mapping, 0, chunk_size);
fail:

79
fs/nilfs2/inode.c
View File

@ -15,6 +15,7 @@
#include <linux/writeback.h>
#include <linux/uio.h>
#include <linux/fiemap.h>
#include <linux/random.h>
#include "nilfs.h"
#include "btnode.h"
#include "segment.h"
@ -28,17 +29,13 @@
* @ino: inode number
* @cno: checkpoint number
* @root: pointer on NILFS root object (mounted checkpoint)
* @for_gc: inode for GC flag
* @for_btnc: inode for B-tree node cache flag
* @for_shadow: inode for shadowed page cache flag
* @type: inode type
*/
struct nilfs_iget_args {
u64 ino;
__u64 cno;
struct nilfs_root *root;
bool for_gc;
bool for_btnc;
bool for_shadow;
unsigned int type;
};
static int nilfs_iget_test(struct inode *inode, void *opaque);
@ -162,7 +159,7 @@ static int nilfs_writepages(struct address_space *mapping,
int err = 0;
if (sb_rdonly(inode->i_sb)) {
nilfs_clear_dirty_pages(mapping, false);
nilfs_clear_dirty_pages(mapping);
return -EROFS;
}
@ -186,7 +183,7 @@ static int nilfs_writepage(struct page *page, struct writeback_control *wbc)
* have dirty pages that try to be flushed in background.
* So, here we simply discard this dirty page.
*/
nilfs_clear_folio_dirty(folio, false);
nilfs_clear_folio_dirty(folio);
folio_unlock(folio);
return -EROFS;
}
@ -315,8 +312,7 @@ static int nilfs_insert_inode_locked(struct inode *inode,
unsigned long ino)
{
struct nilfs_iget_args args = {
.ino = ino, .root = root, .cno = 0, .for_gc = false,
.for_btnc = false, .for_shadow = false
.ino = ino, .root = root, .cno = 0, .type = NILFS_I_TYPE_NORMAL
};
return insert_inode_locked4(inode, ino, nilfs_iget_test, &args);
@ -325,7 +321,6 @@ static int nilfs_insert_inode_locked(struct inode *inode,
struct inode *nilfs_new_inode(struct inode *dir, umode_t mode)
{
struct super_block *sb = dir->i_sb;
struct the_nilfs *nilfs = sb->s_fs_info;
struct inode *inode;
struct nilfs_inode_info *ii;
struct nilfs_root *root;
@ -343,25 +338,13 @@ struct inode *nilfs_new_inode(struct inode *dir, umode_t mode)
root = NILFS_I(dir)->i_root;
ii = NILFS_I(inode);
ii->i_state = BIT(NILFS_I_NEW);
ii->i_type = NILFS_I_TYPE_NORMAL;
ii->i_root = root;
err = nilfs_ifile_create_inode(root->ifile, &ino, &bh);
if (unlikely(err))
goto failed_ifile_create_inode;
/* reference count of i_bh inherits from nilfs_mdt_read_block() */
if (unlikely(ino < NILFS_USER_INO)) {
nilfs_warn(sb,
"inode bitmap is inconsistent for reserved inodes");
do {
brelse(bh);
err = nilfs_ifile_create_inode(root->ifile, &ino, &bh);
if (unlikely(err))
goto failed_ifile_create_inode;
} while (ino < NILFS_USER_INO);
nilfs_info(sb, "repaired inode bitmap for reserved inodes");
}
ii->i_bh = bh;
atomic64_inc(&root->inodes_count);
@ -385,9 +368,7 @@ struct inode *nilfs_new_inode(struct inode *dir, umode_t mode)
/* ii->i_dir_acl = 0; */
ii->i_dir_start_lookup = 0;
nilfs_set_inode_flags(inode);
spin_lock(&nilfs->ns_next_gen_lock);
inode->i_generation = nilfs->ns_next_generation++;
spin_unlock(&nilfs->ns_next_gen_lock);
inode->i_generation = get_random_u32();
if (nilfs_insert_inode_locked(inode, root, ino) < 0) {
err = -EIO;
goto failed_after_creation;
@ -546,23 +527,10 @@ static int nilfs_iget_test(struct inode *inode, void *opaque)
return 0;
ii = NILFS_I(inode);
if (test_bit(NILFS_I_BTNC, &ii->i_state)) {
if (!args->for_btnc)
if (ii->i_type != args->type)
return 0;
} else if (args->for_btnc) {
return 0;
}
if (test_bit(NILFS_I_SHADOW, &ii->i_state)) {
if (!args->for_shadow)
return 0;
} else if (args->for_shadow) {
return 0;
}
if (!test_bit(NILFS_I_GCINODE, &ii->i_state))
return !args->for_gc;
return args->for_gc && args->cno == ii->i_cno;
return !(args->type & NILFS_I_TYPE_GC) || args->cno == ii->i_cno;
}
static int nilfs_iget_set(struct inode *inode, void *opaque)
@ -572,15 +540,9 @@ static int nilfs_iget_set(struct inode *inode, void *opaque)
inode->i_ino = args->ino;
NILFS_I(inode)->i_cno = args->cno;
NILFS_I(inode)->i_root = args->root;
NILFS_I(inode)->i_type = args->type;
if (args->root && args->ino == NILFS_ROOT_INO)
nilfs_get_root(args->root);
if (args->for_gc)
NILFS_I(inode)->i_state = BIT(NILFS_I_GCINODE);
if (args->for_btnc)
NILFS_I(inode)->i_state |= BIT(NILFS_I_BTNC);
if (args->for_shadow)
NILFS_I(inode)->i_state |= BIT(NILFS_I_SHADOW);
return 0;
}
@ -588,8 +550,7 @@ struct inode *nilfs_ilookup(struct super_block *sb, struct nilfs_root *root,
unsigned long ino)
{
struct nilfs_iget_args args = {
.ino = ino, .root = root, .cno = 0, .for_gc = false,
.for_btnc = false, .for_shadow = false
.ino = ino, .root = root, .cno = 0, .type = NILFS_I_TYPE_NORMAL
};
return ilookup5(sb, ino, nilfs_iget_test, &args);
@ -599,8 +560,7 @@ struct inode *nilfs_iget_locked(struct super_block *sb, struct nilfs_root *root,
unsigned long ino)
{
struct nilfs_iget_args args = {
.ino = ino, .root = root, .cno = 0, .for_gc = false,
.for_btnc = false, .for_shadow = false
.ino = ino, .root = root, .cno = 0, .type = NILFS_I_TYPE_NORMAL
};
return iget5_locked(sb, ino, nilfs_iget_test, nilfs_iget_set, &args);
@ -631,8 +591,7 @@ struct inode *nilfs_iget_for_gc(struct super_block *sb, unsigned long ino,
__u64 cno)
{
struct nilfs_iget_args args = {
.ino = ino, .root = NULL, .cno = cno, .for_gc = true,
.for_btnc = false, .for_shadow = false
.ino = ino, .root = NULL, .cno = cno, .type = NILFS_I_TYPE_GC
};
struct inode *inode;
int err;
@ -677,9 +636,7 @@ int nilfs_attach_btree_node_cache(struct inode *inode)
args.ino = inode->i_ino;
args.root = ii->i_root;
args.cno = ii->i_cno;
args.for_gc = test_bit(NILFS_I_GCINODE, &ii->i_state) != 0;
args.for_btnc = true;
args.for_shadow = test_bit(NILFS_I_SHADOW, &ii->i_state) != 0;
args.type = ii->i_type | NILFS_I_TYPE_BTNC;
btnc_inode = iget5_locked(inode->i_sb, inode->i_ino, nilfs_iget_test,
nilfs_iget_set, &args);
@ -733,8 +690,8 @@ void nilfs_detach_btree_node_cache(struct inode *inode)
struct inode *nilfs_iget_for_shadow(struct inode *inode)
{
struct nilfs_iget_args args = {
.ino = inode->i_ino, .root = NULL, .cno = 0, .for_gc = false,
.for_btnc = false, .for_shadow = true
.ino = inode->i_ino, .root = NULL, .cno = 0,
.type = NILFS_I_TYPE_SHADOW
};
struct inode *s_inode;
int err;
@ -900,7 +857,7 @@ static void nilfs_clear_inode(struct inode *inode)
if (test_bit(NILFS_I_BMAP, &ii->i_state))
nilfs_bmap_clear(ii->i_bmap);
if (!test_bit(NILFS_I_BTNC, &ii->i_state))
if (!(ii->i_type & NILFS_I_TYPE_BTNC))
nilfs_detach_btree_node_cache(inode);
if (ii->i_root && inode->i_ino == NILFS_ROOT_INO)

109
fs/nilfs2/ioctl.c
View File

@ -17,6 +17,7 @@
#include <linux/mount.h> /* mnt_want_write_file(), mnt_drop_write_file() */
#include <linux/buffer_head.h>
#include <linux/fileattr.h>
#include <linux/string.h>
#include "nilfs.h"
#include "segment.h"
#include "bmap.h"
@ -114,7 +115,11 @@ static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs,
}
/**
* nilfs_fileattr_get - ioctl to support lsattr
* nilfs_fileattr_get - retrieve miscellaneous file attributes
* @dentry: the object to retrieve from
* @fa: fileattr pointer
*
* Return: always 0 as success.
*/
int nilfs_fileattr_get(struct dentry *dentry, struct fileattr *fa)
{
@ -126,7 +131,12 @@ int nilfs_fileattr_get(struct dentry *dentry, struct fileattr *fa)
}
/**
* nilfs_fileattr_set - ioctl to support chattr
* nilfs_fileattr_set - change miscellaneous file attributes
* @idmap: idmap of the mount
* @dentry: the object to change
* @fa: fileattr pointer
*
* Return: 0 on success, or a negative error code on failure.
*/
int nilfs_fileattr_set(struct mnt_idmap *idmap,
struct dentry *dentry, struct fileattr *fa)
@ -159,6 +169,10 @@ int nilfs_fileattr_set(struct mnt_idmap *idmap,
/**
* nilfs_ioctl_getversion - get info about a file's version (generation number)
* @inode: inode object
* @argp: userspace memory where the generation number of @inode is stored
*
* Return: 0 on success, or %-EFAULT on error.
*/
static int nilfs_ioctl_getversion(struct inode *inode, void __user *argp)
{
@ -1266,6 +1280,91 @@ out:
return ret;
}
/**
* nilfs_ioctl_get_fslabel - get the volume name of the file system
* @sb: super block instance
* @argp: pointer to userspace memory where the volume name should be stored
*
* Return: 0 on success, %-EFAULT if copying to userspace memory fails.
*/
static int nilfs_ioctl_get_fslabel(struct super_block *sb, void __user *argp)
{
struct the_nilfs *nilfs = sb->s_fs_info;
char label[NILFS_MAX_VOLUME_NAME + 1];
BUILD_BUG_ON(NILFS_MAX_VOLUME_NAME >= FSLABEL_MAX);
down_read(&nilfs->ns_sem);
memtostr_pad(label, nilfs->ns_sbp[0]->s_volume_name);
up_read(&nilfs->ns_sem);
if (copy_to_user(argp, label, sizeof(label)))
return -EFAULT;
return 0;
}
/**
* nilfs_ioctl_set_fslabel - set the volume name of the file system
* @sb: super block instance
* @filp: file object
* @argp: pointer to userspace memory that contains the volume name
*
* Return: 0 on success, or the following negative error code on failure.
* * %-EFAULT - Error copying input data.
* * %-EINVAL - Label length exceeds record size in superblock.
* * %-EIO - I/O error.
* * %-EPERM - Operation not permitted (insufficient permissions).
* * %-EROFS - Read only file system.
*/
static int nilfs_ioctl_set_fslabel(struct super_block *sb, struct file *filp,
void __user *argp)
{
char label[NILFS_MAX_VOLUME_NAME + 1];
struct the_nilfs *nilfs = sb->s_fs_info;
struct nilfs_super_block **sbp;
size_t len;
int ret;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
ret = mnt_want_write_file(filp);
if (ret)
return ret;
if (copy_from_user(label, argp, NILFS_MAX_VOLUME_NAME + 1)) {
ret = -EFAULT;
goto out_drop_write;
}
len = strnlen(label, NILFS_MAX_VOLUME_NAME + 1);
if (len > NILFS_MAX_VOLUME_NAME) {
nilfs_err(sb, "unable to set label with more than %zu bytes",
NILFS_MAX_VOLUME_NAME);
ret = -EINVAL;
goto out_drop_write;
}
down_write(&nilfs->ns_sem);
sbp = nilfs_prepare_super(sb, false);
if (unlikely(!sbp)) {
ret = -EIO;
goto out_unlock;
}
strtomem_pad(sbp[0]->s_volume_name, label, 0);
if (sbp[1])
strtomem_pad(sbp[1]->s_volume_name, label, 0);
ret = nilfs_commit_super(sb, NILFS_SB_COMMIT_ALL);
out_unlock:
up_write(&nilfs->ns_sem);
out_drop_write:
mnt_drop_write_file(filp);
return ret;
}
long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
struct inode *inode = file_inode(filp);
@ -1308,6 +1407,10 @@ long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
return nilfs_ioctl_set_alloc_range(inode, argp);
case FITRIM:
return nilfs_ioctl_trim_fs(inode, argp);
case FS_IOC_GETFSLABEL:
return nilfs_ioctl_get_fslabel(inode->i_sb, argp);
case FS_IOC_SETFSLABEL:
return nilfs_ioctl_set_fslabel(inode->i_sb, filp, argp);
default:
return -ENOTTY;
}
@ -1334,6 +1437,8 @@ long nilfs_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
case NILFS_IOCTL_RESIZE:
case NILFS_IOCTL_SET_ALLOC_RANGE:
case FITRIM:
case FS_IOC_GETFSLABEL:
case FS_IOC_SETFSLABEL:
break;
default:
return -ENOIOCTLCMD;

6
fs/nilfs2/mdt.c
View File

@ -411,7 +411,7 @@ nilfs_mdt_write_page(struct page *page, struct writeback_control *wbc)
* have dirty folios that try to be flushed in background.
* So, here we simply discard this dirty folio.
*/
nilfs_clear_folio_dirty(folio, false);
nilfs_clear_folio_dirty(folio);
folio_unlock(folio);
return -EROFS;
}
@ -638,10 +638,10 @@ void nilfs_mdt_restore_from_shadow_map(struct inode *inode)
if (mi->mi_palloc_cache)
nilfs_palloc_clear_cache(inode);
nilfs_clear_dirty_pages(inode->i_mapping, true);
nilfs_clear_dirty_pages(inode->i_mapping);
nilfs_copy_back_pages(inode->i_mapping, shadow->inode->i_mapping);
nilfs_clear_dirty_pages(ii->i_assoc_inode->i_mapping, true);
nilfs_clear_dirty_pages(ii->i_assoc_inode->i_mapping);
nilfs_copy_back_pages(ii->i_assoc_inode->i_mapping,
NILFS_I(shadow->inode)->i_assoc_inode->i_mapping);

27
fs/nilfs2/nilfs.h
View File

@ -22,6 +22,7 @@
/**
* struct nilfs_inode_info - nilfs inode data in memory
* @i_flags: inode flags
* @i_type: inode type (combination of flags that inidicate usage)
* @i_state: dynamic state flags
* @i_bmap: pointer on i_bmap_data
* @i_bmap_data: raw block mapping
@ -37,6 +38,7 @@
*/
struct nilfs_inode_info {
__u32 i_flags;
unsigned int i_type;
unsigned long i_state; /* Dynamic state flags */
struct nilfs_bmap *i_bmap;
struct nilfs_bmap i_bmap_data;
@ -90,9 +92,16 @@ enum {
NILFS_I_UPDATED, /* The file has been written back */
NILFS_I_INODE_SYNC, /* dsync is not allowed for inode */
NILFS_I_BMAP, /* has bmap and btnode_cache */
NILFS_I_GCINODE, /* inode for GC, on memory only */
NILFS_I_BTNC, /* inode for btree node cache */
NILFS_I_SHADOW, /* inode for shadowed page cache */
};
/*
* Flags to identify the usage of on-memory inodes (i_type)
*/
enum {
NILFS_I_TYPE_NORMAL = 0,
NILFS_I_TYPE_GC = 0x0001, /* For data caching during GC */
NILFS_I_TYPE_BTNC = 0x0002, /* For btree node cache */
NILFS_I_TYPE_SHADOW = 0x0004, /* For shadowed page cache */
};
/*
@ -103,6 +112,18 @@ enum {
NILFS_SB_COMMIT_ALL /* Commit both super blocks */
};
/**
* define NILFS_MAX_VOLUME_NAME - maximum number of characters (bytes) in a
* file system volume name
*
* Defined by the size of the volume name field in the on-disk superblocks.
* This volume name does not include the terminating NULL byte if the string
* length matches the field size, so use (NILFS_MAX_VOLUME_NAME + 1) for the
* size of the buffer that requires a NULL byte termination.
*/
#define NILFS_MAX_VOLUME_NAME \
sizeof_field(struct nilfs_super_block, s_volume_name)
/*
* Macros to check inode numbers
*/

21
fs/nilfs2/page.c
View File

@ -262,7 +262,7 @@ repeat:
NILFS_FOLIO_BUG(folio, "inconsistent dirty state");
dfolio = filemap_grab_folio(dmap, folio->index);
if (unlikely(IS_ERR(dfolio))) {
if (IS_ERR(dfolio)) {
/* No empty page is added to the page cache */
folio_unlock(folio);
err = PTR_ERR(dfolio);
@ -357,9 +357,8 @@ repeat:
/**
* nilfs_clear_dirty_pages - discard dirty pages in address space
* @mapping: address space with dirty pages for discarding
* @silent: suppress [true] or print [false] warning messages
*/
void nilfs_clear_dirty_pages(struct address_space *mapping, bool silent)
void nilfs_clear_dirty_pages(struct address_space *mapping)
{
struct folio_batch fbatch;
unsigned int i;
@ -380,7 +379,7 @@ void nilfs_clear_dirty_pages(struct address_space *mapping, bool silent)
* was acquired. Skip processing in that case.
*/
if (likely(folio->mapping == mapping))
nilfs_clear_folio_dirty(folio, silent);
nilfs_clear_folio_dirty(folio);
folio_unlock(folio);
}
@ -392,20 +391,13 @@ void nilfs_clear_dirty_pages(struct address_space *mapping, bool silent)
/**
* nilfs_clear_folio_dirty - discard dirty folio
* @folio: dirty folio that will be discarded
* @silent: suppress [true] or print [false] warning messages
*/
void nilfs_clear_folio_dirty(struct folio *folio, bool silent)
void nilfs_clear_folio_dirty(struct folio *folio)
{
struct inode *inode = folio->mapping->host;
struct super_block *sb = inode->i_sb;
struct buffer_head *bh, *head;
BUG_ON(!folio_test_locked(folio));
if (!silent)
nilfs_warn(sb, "discard dirty page: offset=%lld, ino=%lu",
folio_pos(folio), inode->i_ino);
folio_clear_uptodate(folio);
folio_clear_mappedtodisk(folio);
@ -419,11 +411,6 @@ void nilfs_clear_folio_dirty(struct folio *folio, bool silent)
bh = head;
do {
lock_buffer(bh);
if (!silent)
nilfs_warn(sb,
"discard dirty block: blocknr=%llu, size=%zu",
(u64)bh->b_blocknr, bh->b_size);
set_mask_bits(&bh->b_state, clear_bits, 0);
unlock_buffer(bh);
} while (bh = bh->b_this_page, bh != head);

4
fs/nilfs2/page.h
View File

@ -41,8 +41,8 @@ void nilfs_folio_bug(struct folio *);
int nilfs_copy_dirty_pages(struct address_space *, struct address_space *);
void nilfs_copy_back_pages(struct address_space *, struct address_space *);
void nilfs_clear_folio_dirty(struct folio *, bool);
void nilfs_clear_dirty_pages(struct address_space *, bool);
void nilfs_clear_folio_dirty(struct folio *folio);
void nilfs_clear_dirty_pages(struct address_space *mapping);
unsigned int nilfs_page_count_clean_buffers(struct page *, unsigned int,
unsigned int);
unsigned long nilfs_find_uncommitted_extent(struct inode *inode,

11
fs/nilfs2/recovery.c
View File

@ -433,8 +433,17 @@ static int nilfs_prepare_segment_for_recovery(struct the_nilfs *nilfs,
* The next segment is invalidated by this recovery.
*/
err = nilfs_sufile_free(sufile, segnum[1]);
if (unlikely(err))
if (unlikely(err)) {
if (err == -ENOENT) {
nilfs_err(sb,
"checkpoint log inconsistency at block %llu (segment %llu): next segment %llu is unallocated",
(unsigned long long)nilfs->ns_last_pseg,
(unsigned long long)nilfs->ns_segnum,
(unsigned long long)segnum[1]);
err = -EINVAL;
}
goto failed;
}
for (i = 1; i < 4; i++) {
err = nilfs_segment_list_add(head, segnum[i]);

232
fs/nilfs2/segment.c
View File

@ -519,7 +519,7 @@ static void nilfs_segctor_end_finfo(struct nilfs_sc_info *sci,
ii = NILFS_I(inode);
if (test_bit(NILFS_I_GCINODE, &ii->i_state))
if (ii->i_type & NILFS_I_TYPE_GC)
cno = ii->i_cno;
else if (NILFS_ROOT_METADATA_FILE(inode->i_ino))
cno = 0;
@ -1102,12 +1102,64 @@ static int nilfs_segctor_scan_file_dsync(struct nilfs_sc_info *sci,
return err;
}
/**
* nilfs_free_segments - free the segments given by an array of segment numbers
* @nilfs: nilfs object
* @segnumv: array of segment numbers to be freed
* @nsegs: number of segments to be freed in @segnumv
*
* nilfs_free_segments() wraps nilfs_sufile_freev() and
* nilfs_sufile_cancel_freev(), and edits the segment usage metadata file
* (sufile) to free all segments given by @segnumv and @nsegs at once. If
* it fails midway, it cancels the changes so that none of the segments are
* freed. If @nsegs is 0, this function does nothing.
*
* The freeing of segments is not finalized until the writing of a log with
* a super root block containing this sufile change is complete, and it can
* be canceled with nilfs_sufile_cancel_freev() until then.
*
* Return: 0 on success, or the following negative error code on failure.
* * %-EINVAL - Invalid segment number.
* * %-EIO - I/O error (including metadata corruption).
* * %-ENOMEM - Insufficient memory available.
*/
static int nilfs_free_segments(struct the_nilfs *nilfs, __u64 *segnumv,
size_t nsegs)
{
size_t ndone;
int ret;
if (!nsegs)
return 0;
ret = nilfs_sufile_freev(nilfs->ns_sufile, segnumv, nsegs, &ndone);
if (unlikely(ret)) {
nilfs_sufile_cancel_freev(nilfs->ns_sufile, segnumv, ndone,
NULL);
/*
* If a segment usage of the segments to be freed is in a
* hole block, nilfs_sufile_freev() will return -ENOENT.
* In this case, -EINVAL should be returned to the caller
* since there is something wrong with the given segment
* number array. This error can only occur during GC, so
* there is no need to worry about it propagating to other
* callers (such as fsync).
*/
if (ret == -ENOENT) {
nilfs_err(nilfs->ns_sb,
"The segment usage entry %llu to be freed is invalid (in a hole)",
(unsigned long long)segnumv[ndone]);
ret = -EINVAL;
}
}
return ret;
}
static int nilfs_segctor_collect_blocks(struct nilfs_sc_info *sci, int mode)
{
struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
struct list_head *head;
struct nilfs_inode_info *ii;
size_t ndone;
int err = 0;
switch (nilfs_sc_cstage_get(sci)) {
@ -1201,14 +1253,10 @@ static int nilfs_segctor_collect_blocks(struct nilfs_sc_info *sci, int mode)
nilfs_sc_cstage_inc(sci);
fallthrough;
case NILFS_ST_SUFILE:
err = nilfs_sufile_freev(nilfs->ns_sufile, sci->sc_freesegs,
sci->sc_nfreesegs, &ndone);
if (unlikely(err)) {
nilfs_sufile_cancel_freev(nilfs->ns_sufile,
sci->sc_freesegs, ndone,
NULL);
err = nilfs_free_segments(nilfs, sci->sc_freesegs,
sci->sc_nfreesegs);
if (unlikely(err))
break;
}
sci->sc_stage.flags |= NILFS_CF_SUFREED;
err = nilfs_segctor_scan_file(sci, nilfs->ns_sufile,
@ -2456,7 +2504,7 @@ static void nilfs_construction_timeout(struct timer_list *t)
{
struct nilfs_sc_info *sci = from_timer(sci, t, sc_timer);
wake_up_process(sci->sc_timer_task);
wake_up_process(sci->sc_task);
}
static void
@ -2582,123 +2630,85 @@ static int nilfs_segctor_flush_mode(struct nilfs_sc_info *sci)
}
/**
* nilfs_segctor_thread - main loop of the segment constructor thread.
* nilfs_log_write_required - determine whether log writing is required
* @sci: nilfs_sc_info struct
* @modep: location for storing log writing mode
*
* Return: true if log writing is required, false otherwise. If log writing
* is required, the mode is stored in the location pointed to by @modep.
*/
static bool nilfs_log_write_required(struct nilfs_sc_info *sci, int *modep)
{
bool timedout, ret = true;
spin_lock(&sci->sc_state_lock);
timedout = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) &&
time_after_eq(jiffies, sci->sc_timer.expires));
if (timedout || sci->sc_seq_request != sci->sc_seq_done)
*modep = SC_LSEG_SR;
else if (sci->sc_flush_request)
*modep = nilfs_segctor_flush_mode(sci);
else
ret = false;
spin_unlock(&sci->sc_state_lock);
return ret;
}
/**
* nilfs_segctor_thread - main loop of the log writer thread
* @arg: pointer to a struct nilfs_sc_info.
*
* nilfs_segctor_thread() initializes a timer and serves as a daemon
* to execute segment constructions.
* nilfs_segctor_thread() is the main loop function of the log writer kernel
* thread, which determines whether log writing is necessary, and if so,
* performs the log write in the background, or waits if not. It is also
* used to decide the background writeback of the superblock.
*
* Return: Always 0.
*/
static int nilfs_segctor_thread(void *arg)
{
struct nilfs_sc_info *sci = (struct nilfs_sc_info *)arg;
struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
int timeout = 0;
sci->sc_timer_task = current;
timer_setup(&sci->sc_timer, nilfs_construction_timeout, 0);
/* start sync. */
sci->sc_task = current;
wake_up(&sci->sc_wait_task); /* for nilfs_segctor_start_thread() */
nilfs_info(sci->sc_super,
"segctord starting. Construction interval = %lu seconds, CP frequency < %lu seconds",
sci->sc_interval / HZ, sci->sc_mjcp_freq / HZ);
set_freezable();
spin_lock(&sci->sc_state_lock);
loop:
for (;;) {
while (!kthread_should_stop()) {
DEFINE_WAIT(wait);
bool should_write;
int mode;
if (sci->sc_state & NILFS_SEGCTOR_QUIT)
goto end_thread;
if (timeout || sci->sc_seq_request != sci->sc_seq_done)
mode = SC_LSEG_SR;
else if (sci->sc_flush_request)
mode = nilfs_segctor_flush_mode(sci);
else
break;
spin_unlock(&sci->sc_state_lock);
nilfs_segctor_thread_construct(sci, mode);
spin_lock(&sci->sc_state_lock);
timeout = 0;
}
if (freezing(current)) {
spin_unlock(&sci->sc_state_lock);
try_to_freeze();
spin_lock(&sci->sc_state_lock);
} else {
DEFINE_WAIT(wait);
int should_sleep = 1;
continue;
}
prepare_to_wait(&sci->sc_wait_daemon, &wait,
TASK_INTERRUPTIBLE);
if (sci->sc_seq_request != sci->sc_seq_done)
should_sleep = 0;
else if (sci->sc_flush_request)
should_sleep = 0;
else if (sci->sc_state & NILFS_SEGCTOR_COMMIT)
should_sleep = time_before(jiffies,
sci->sc_timer.expires);
if (should_sleep) {
spin_unlock(&sci->sc_state_lock);
should_write = nilfs_log_write_required(sci, &mode);
if (!should_write)
schedule();
spin_lock(&sci->sc_state_lock);
}
finish_wait(&sci->sc_wait_daemon, &wait);
timeout = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) &&
time_after_eq(jiffies, sci->sc_timer.expires));
if (nilfs_sb_dirty(nilfs) && nilfs_sb_need_update(nilfs))
set_nilfs_discontinued(nilfs);
}
goto loop;
end_thread:
if (should_write)
nilfs_segctor_thread_construct(sci, mode);
}
/* end sync. */
spin_lock(&sci->sc_state_lock);
sci->sc_task = NULL;
timer_shutdown_sync(&sci->sc_timer);
wake_up(&sci->sc_wait_task); /* for nilfs_segctor_kill_thread() */
spin_unlock(&sci->sc_state_lock);
return 0;
}
static int nilfs_segctor_start_thread(struct nilfs_sc_info *sci)
{
struct task_struct *t;
t = kthread_run(nilfs_segctor_thread, sci, "segctord");
if (IS_ERR(t)) {
int err = PTR_ERR(t);
nilfs_err(sci->sc_super, "error %d creating segctord thread",
err);
return err;
}
wait_event(sci->sc_wait_task, sci->sc_task != NULL);
return 0;
}
static void nilfs_segctor_kill_thread(struct nilfs_sc_info *sci)
__acquires(&sci->sc_state_lock)
__releases(&sci->sc_state_lock)
{
sci->sc_state |= NILFS_SEGCTOR_QUIT;
while (sci->sc_task) {
wake_up(&sci->sc_wait_daemon);
spin_unlock(&sci->sc_state_lock);
wait_event(sci->sc_wait_task, sci->sc_task == NULL);
spin_lock(&sci->sc_state_lock);
}
}
/*
* Setup & clean-up functions
*/
@ -2719,7 +2729,6 @@ static struct nilfs_sc_info *nilfs_segctor_new(struct super_block *sb,
init_waitqueue_head(&sci->sc_wait_request);
init_waitqueue_head(&sci->sc_wait_daemon);
init_waitqueue_head(&sci->sc_wait_task);
spin_lock_init(&sci->sc_state_lock);
INIT_LIST_HEAD(&sci->sc_dirty_files);
INIT_LIST_HEAD(&sci->sc_segbufs);
@ -2774,8 +2783,12 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci)
up_write(&nilfs->ns_segctor_sem);
if (sci->sc_task) {
wake_up(&sci->sc_wait_daemon);
kthread_stop(sci->sc_task);
}
spin_lock(&sci->sc_state_lock);
nilfs_segctor_kill_thread(sci);
flag = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) || sci->sc_flush_request
|| sci->sc_seq_request != sci->sc_seq_done);
spin_unlock(&sci->sc_state_lock);
@ -2823,14 +2836,15 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci)
* This allocates a log writer object, initializes it, and starts the
* log writer.
*
* Return Value: On success, 0 is returned. On error, one of the following
* negative error code is returned.
*
* %-ENOMEM - Insufficient memory available.
* Return: 0 on success, or the following negative error code on failure.
* * %-EINTR - Log writer thread creation failed due to interruption.
* * %-ENOMEM - Insufficient memory available.
*/
int nilfs_attach_log_writer(struct super_block *sb, struct nilfs_root *root)
{
struct the_nilfs *nilfs = sb->s_fs_info;
struct nilfs_sc_info *sci;
struct task_struct *t;
int err;
if (nilfs->ns_writer) {
@ -2843,15 +2857,23 @@ int nilfs_attach_log_writer(struct super_block *sb, struct nilfs_root *root)
return 0;
}
nilfs->ns_writer = nilfs_segctor_new(sb, root);
if (!nilfs->ns_writer)
sci = nilfs_segctor_new(sb, root);
if (unlikely(!sci))
return -ENOMEM;
err = nilfs_segctor_start_thread(nilfs->ns_writer);
if (unlikely(err))
nilfs->ns_writer = sci;
t = kthread_create(nilfs_segctor_thread, sci, "segctord");
if (IS_ERR(t)) {
err = PTR_ERR(t);
nilfs_err(sb, "error %d creating segctord thread", err);
nilfs_detach_log_writer(sb);
return err;
}
sci->sc_task = t;
timer_setup(&sci->sc_timer, nilfs_construction_timeout, 0);
wake_up_process(sci->sc_task);
return 0;
}
/**

10
fs/nilfs2/segment.h
View File

@ -22,10 +22,10 @@ struct nilfs_root;
* struct nilfs_recovery_info - Recovery information
* @ri_need_recovery: Recovery status
* @ri_super_root: Block number of the last super root
* @ri_ri_cno: Number of the last checkpoint
* @ri_cno: Number of the last checkpoint
* @ri_lsegs_start: Region for roll-forwarding (start block number)
* @ri_lsegs_end: Region for roll-forwarding (end block number)
* @ri_lseg_start_seq: Sequence value of the segment at ri_lsegs_start
* @ri_lsegs_start_seq: Sequence value of the segment at ri_lsegs_start
* @ri_used_segments: List of segments to be mark active
* @ri_pseg_start: Block number of the last partial segment
* @ri_seq: Sequence number on the last partial segment
@ -105,9 +105,8 @@ struct nilfs_segsum_pointer {
* @sc_flush_request: inode bitmap of metadata files to be flushed
* @sc_wait_request: Client request queue
* @sc_wait_daemon: Daemon wait queue
* @sc_wait_task: Start/end wait queue to control segctord task
* @sc_seq_request: Request counter
* @sc_seq_accept: Accepted request count
* @sc_seq_accepted: Accepted request count
* @sc_seq_done: Completion counter
* @sc_sync: Request of explicit sync operation
* @sc_interval: Timeout value of background construction
@ -158,7 +157,6 @@ struct nilfs_sc_info {
wait_queue_head_t sc_wait_request;
wait_queue_head_t sc_wait_daemon;
wait_queue_head_t sc_wait_task;
__u32 sc_seq_request;
__u32 sc_seq_accepted;
@ -171,7 +169,6 @@ struct nilfs_sc_info {
unsigned long sc_watermark;
struct timer_list sc_timer;
struct task_struct *sc_timer_task;
struct task_struct *sc_task;
};
@ -192,7 +189,6 @@ enum {
};
/* sc_state */
#define NILFS_SEGCTOR_QUIT 0x0001 /* segctord is being destroyed */
#define NILFS_SEGCTOR_COMMIT 0x0004 /* committed transaction exists */
/*

44
fs/nilfs2/sufile.c
View File

@ -79,10 +79,17 @@ nilfs_sufile_block_get_segment_usage(const struct inode *sufile, __u64 segnum,
NILFS_MDT(sufile)->mi_entry_size;
}
static inline int nilfs_sufile_get_header_block(struct inode *sufile,
static int nilfs_sufile_get_header_block(struct inode *sufile,
struct buffer_head **bhp)
{
return nilfs_mdt_get_block(sufile, 0, 0, NULL, bhp);
int err = nilfs_mdt_get_block(sufile, 0, 0, NULL, bhp);
if (unlikely(err == -ENOENT)) {
nilfs_error(sufile->i_sb,
"missing header block in segment usage metadata");
err = -EIO;
}
return err;
}
static inline int
@ -506,8 +513,15 @@ int nilfs_sufile_mark_dirty(struct inode *sufile, __u64 segnum)
down_write(&NILFS_MDT(sufile)->mi_sem);
ret = nilfs_sufile_get_segment_usage_block(sufile, segnum, 0, &bh);
if (ret)
if (unlikely(ret)) {
if (ret == -ENOENT) {
nilfs_error(sufile->i_sb,
"segment usage for segment %llu is unreadable due to a hole block",
(unsigned long long)segnum);
ret = -EIO;
}
goto out_sem;
}
kaddr = kmap_local_page(bh->b_page);
su = nilfs_sufile_block_get_segment_usage(sufile, segnum, bh, kaddr);
@ -840,21 +854,17 @@ out:
}
/**
* nilfs_sufile_get_suinfo -
* nilfs_sufile_get_suinfo - get segment usage information
* @sufile: inode of segment usage file
* @segnum: segment number to start looking
* @buf: array of suinfo
* @sisz: byte size of suinfo
* @nsi: size of suinfo array
*
* Description:
*
* Return Value: On success, 0 is returned and .... On error, one of the
* following negative error codes is returned.
*
* %-EIO - I/O error.
*
* %-ENOMEM - Insufficient amount of memory available.
* Return: Count of segment usage info items stored in the output buffer on
* success, or the following negative error code on failure.
* * %-EIO - I/O error (including metadata corruption).
* * %-ENOMEM - Insufficient memory available.
*/
ssize_t nilfs_sufile_get_suinfo(struct inode *sufile, __u64 segnum, void *buf,
unsigned int sisz, size_t nsi)
@ -1241,9 +1251,15 @@ int nilfs_sufile_read(struct super_block *sb, size_t susize,
if (err)
goto failed;
err = nilfs_sufile_get_header_block(sufile, &header_bh);
if (err)
err = nilfs_mdt_get_block(sufile, 0, 0, NULL, &header_bh);
if (unlikely(err)) {
if (err == -ENOENT) {
nilfs_err(sb,
"missing header block in segment usage metadata");
err = -EINVAL;
}
goto failed;
}
sui = NILFS_SUI(sufile);
kaddr = kmap_local_page(header_bh->b_page);

9
fs/nilfs2/super.c
View File

@ -105,6 +105,10 @@ static void nilfs_set_error(struct super_block *sb)
/**
* __nilfs_error() - report failure condition on a filesystem
* @sb: super block instance
* @function: name of calling function
* @fmt: format string for message to be output
* @...: optional arguments to @fmt
*
* __nilfs_error() sets an ERROR_FS flag on the superblock as well as
* reporting an error message. This function should be called when
@ -156,6 +160,7 @@ struct inode *nilfs_alloc_inode(struct super_block *sb)
return NULL;
ii->i_bh = NULL;
ii->i_state = 0;
ii->i_type = 0;
ii->i_cno = 0;
ii->i_assoc_inode = NULL;
ii->i_bmap = &ii->i_bmap_data;
@ -1063,6 +1068,10 @@ nilfs_fill_super(struct super_block *sb, struct fs_context *fc)
if (err)
goto failed_nilfs;
super_set_uuid(sb, nilfs->ns_sbp[0]->s_uuid,
sizeof(nilfs->ns_sbp[0]->s_uuid));
super_set_sysfs_name_bdev(sb);
cno = nilfs_last_cno(nilfs);
err = nilfs_attach_checkpoint(sb, cno, true, &fsroot);
if (err) {

5
fs/nilfs2/the_nilfs.c
View File

@ -12,7 +12,6 @@
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/backing-dev.h>
#include <linux/random.h>
#include <linux/log2.h>
#include <linux/crc32.h>
#include "nilfs.h"
@ -69,7 +68,6 @@ struct the_nilfs *alloc_nilfs(struct super_block *sb)
INIT_LIST_HEAD(&nilfs->ns_dirty_files);
INIT_LIST_HEAD(&nilfs->ns_gc_inodes);
spin_lock_init(&nilfs->ns_inode_lock);
spin_lock_init(&nilfs->ns_next_gen_lock);
spin_lock_init(&nilfs->ns_last_segment_lock);
nilfs->ns_cptree = RB_ROOT;
spin_lock_init(&nilfs->ns_cptree_lock);
@ -754,9 +752,6 @@ int init_nilfs(struct the_nilfs *nilfs, struct super_block *sb)
nilfs->ns_blocksize_bits = sb->s_blocksize_bits;
nilfs->ns_blocksize = blocksize;
get_random_bytes(&nilfs->ns_next_generation,
sizeof(nilfs->ns_next_generation));
err = nilfs_store_disk_layout(nilfs, sbp);
if (err)
goto failed_sbh;

6
fs/nilfs2/the_nilfs.h
View File

@ -71,8 +71,6 @@ enum {
* @ns_dirty_files: list of dirty files
* @ns_inode_lock: lock protecting @ns_dirty_files
* @ns_gc_inodes: dummy inodes to keep live blocks
* @ns_next_generation: next generation number for inodes
* @ns_next_gen_lock: lock protecting @ns_next_generation
* @ns_mount_opt: mount options
* @ns_resuid: uid for reserved blocks
* @ns_resgid: gid for reserved blocks
@ -161,10 +159,6 @@ struct the_nilfs {
/* GC inode list */
struct list_head ns_gc_inodes;
/* Inode allocator */
u32 ns_next_generation;
spinlock_t ns_next_gen_lock;
/* Mount options */
unsigned long ns_mount_opt;

2
fs/ocfs2/aops.c
View File

@ -1187,7 +1187,7 @@ static int ocfs2_write_cluster(struct address_space *mapping,
/* This is the direct io target page. */
if (wc->w_pages[i] == NULL) {
p_blkno++;
p_blkno += (1 << (PAGE_SHIFT - inode->i_sb->s_blocksize_bits));
continue;
}

12
fs/ocfs2/dir.c
View File

@ -3512,16 +3512,6 @@ static int dx_leaf_sort_cmp(const void *a, const void *b)
return 0;
}
static void dx_leaf_sort_swap(void *a, void *b, int size)
{
struct ocfs2_dx_entry *entry1 = a;
struct ocfs2_dx_entry *entry2 = b;
BUG_ON(size != sizeof(*entry1));
swap(*entry1, *entry2);
}
static int ocfs2_dx_leaf_same_major(struct ocfs2_dx_leaf *dx_leaf)
{
struct ocfs2_dx_entry_list *dl_list = &dx_leaf->dl_list;
@ -3782,7 +3772,7 @@ static int ocfs2_dx_dir_rebalance(struct ocfs2_super *osb, struct inode *dir,
*/
sort(dx_leaf->dl_list.de_entries, num_used,
sizeof(struct ocfs2_dx_entry), dx_leaf_sort_cmp,
dx_leaf_sort_swap);
NULL);
ocfs2_journal_dirty(handle, dx_leaf_bh);

7
fs/ocfs2/dlmglue.c
View File

@ -3151,11 +3151,8 @@ static int ocfs2_dlm_seq_show(struct seq_file *m, void *v)
#ifdef CONFIG_OCFS2_FS_STATS
if (!lockres->l_lock_wait && dlm_debug->d_filter_secs) {
now = ktime_to_us(ktime_get_real());
if (lockres->l_lock_prmode.ls_last >
lockres->l_lock_exmode.ls_last)
last = lockres->l_lock_prmode.ls_last;
else
last = lockres->l_lock_exmode.ls_last;
last = max(lockres->l_lock_prmode.ls_last,
lockres->l_lock_exmode.ls_last);
/*
* Use d_filter_secs field to filter lock resources dump,
* the default d_filter_secs(0) value filters nothing,

19
fs/ocfs2/localalloc.c
View File

@ -1002,6 +1002,25 @@ static int ocfs2_sync_local_to_main(struct ocfs2_super *osb,
start = bit_off + 1;
}
/* clear the contiguous bits until the end boundary */
if (count) {
blkno = la_start_blk +
ocfs2_clusters_to_blocks(osb->sb,
start - count);
trace_ocfs2_sync_local_to_main_free(
count, start - count,
(unsigned long long)la_start_blk,
(unsigned long long)blkno);
status = ocfs2_release_clusters(handle,
main_bm_inode,
main_bm_bh, blkno,
count);
if (status < 0)
mlog_errno(status);
}
bail:
if (status)
mlog_errno(status);

15
fs/ocfs2/quota_global.c
View File

@ -371,12 +371,16 @@ int ocfs2_global_read_info(struct super_block *sb, int type)
status = ocfs2_extent_map_get_blocks(oinfo->dqi_gqinode, 0, &oinfo->dqi_giblk,
&pcount, NULL);
if (status < 0)
if (status < 0) {
mlog_errno(status);
goto out_unlock;
}
status = ocfs2_qinfo_lock(oinfo, 0);
if (status < 0)
if (status < 0) {
mlog_errno(status);
goto out_unlock;
}
status = sb->s_op->quota_read(sb, type, (char *)&dinfo,
sizeof(struct ocfs2_global_disk_dqinfo),
OCFS2_GLOBAL_INFO_OFF);
@ -404,12 +408,11 @@ int ocfs2_global_read_info(struct super_block *sb, int type)
schedule_delayed_work(&oinfo->dqi_sync_work,
msecs_to_jiffies(oinfo->dqi_syncms));
out_err:
return status;
return 0;
out_unlock:
ocfs2_unlock_global_qf(oinfo, 0);
mlog_errno(status);
goto out_err;
out_err:
return status;
}
/* Write information to global quota file. Expects exclusive lock on quota

13
fs/ocfs2/refcounttree.c
View File

@ -1392,13 +1392,6 @@ static int cmp_refcount_rec_by_cpos(const void *a, const void *b)
return 0;
}
static void swap_refcount_rec(void *a, void *b, int size)
{
struct ocfs2_refcount_rec *l = a, *r = b;
swap(*l, *r);
}
/*
* The refcount cpos are ordered by their 64bit cpos,
* But we will use the low 32 bit to be the e_cpos in the b-tree.
@ -1474,7 +1467,7 @@ static int ocfs2_divide_leaf_refcount_block(struct buffer_head *ref_leaf_bh,
*/
sort(&rl->rl_recs, le16_to_cpu(rl->rl_used),
sizeof(struct ocfs2_refcount_rec),
cmp_refcount_rec_by_low_cpos, swap_refcount_rec);
cmp_refcount_rec_by_low_cpos, NULL);
ret = ocfs2_find_refcount_split_pos(rl, &cpos, &split_index);
if (ret) {
@ -1499,11 +1492,11 @@ static int ocfs2_divide_leaf_refcount_block(struct buffer_head *ref_leaf_bh,
sort(&rl->rl_recs, le16_to_cpu(rl->rl_used),
sizeof(struct ocfs2_refcount_rec),
cmp_refcount_rec_by_cpos, swap_refcount_rec);
cmp_refcount_rec_by_cpos, NULL);
sort(&new_rl->rl_recs, le16_to_cpu(new_rl->rl_used),
sizeof(struct ocfs2_refcount_rec),
cmp_refcount_rec_by_cpos, swap_refcount_rec);
cmp_refcount_rec_by_cpos, NULL);
*split_cpos = cpos;
return 0;

4
fs/ocfs2/super.c
View File

@ -2357,8 +2357,8 @@ static int ocfs2_verify_volume(struct ocfs2_dinode *di,
(unsigned long long)bh->b_blocknr);
} else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 ||
le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) {
mlog(ML_ERROR, "bad cluster size found: %u\n",
1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits));
mlog(ML_ERROR, "bad cluster size bit found: %u\n",
le32_to_cpu(di->id2.i_super.s_clustersize_bits));
} else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) {
mlog(ML_ERROR, "bad root_blkno: 0\n");
} else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) {

15
fs/ocfs2/xattr.c
View File

@ -4167,15 +4167,6 @@ static int cmp_xe(const void *a, const void *b)
return 0;
}
static void swap_xe(void *a, void *b, int size)
{
struct ocfs2_xattr_entry *l = a, *r = b, tmp;
tmp = *l;
memcpy(l, r, sizeof(struct ocfs2_xattr_entry));
memcpy(r, &tmp, sizeof(struct ocfs2_xattr_entry));
}
/*
* When the ocfs2_xattr_block is filled up, new bucket will be created
* and all the xattr entries will be moved to the new bucket.
@ -4241,7 +4232,7 @@ static void ocfs2_cp_xattr_block_to_bucket(struct inode *inode,
trace_ocfs2_cp_xattr_block_to_bucket_end(offset, size, off_change);
sort(target + offset, count, sizeof(struct ocfs2_xattr_entry),
cmp_xe, swap_xe);
cmp_xe, NULL);
}
/*
@ -4436,7 +4427,7 @@ static int ocfs2_defrag_xattr_bucket(struct inode *inode,
*/
sort(entries, le16_to_cpu(xh->xh_count),
sizeof(struct ocfs2_xattr_entry),
cmp_xe_offset, swap_xe);
cmp_xe_offset, NULL);
/* Move all name/values to the end of the bucket. */
xe = xh->xh_entries;
@ -4478,7 +4469,7 @@ static int ocfs2_defrag_xattr_bucket(struct inode *inode,
/* sort the entries by their name_hash. */
sort(entries, le16_to_cpu(xh->xh_count),
sizeof(struct ocfs2_xattr_entry),
cmp_xe, swap_xe);
cmp_xe, NULL);
buf = bucket_buf;
for (i = 0; i < bucket->bu_blocks; i++, buf += blocksize)

31
fs/proc/inode.c
View File

@ -303,9 +303,7 @@ static ssize_t proc_reg_read_iter(struct kiocb *iocb, struct iov_iter *iter)
static ssize_t pde_read(struct proc_dir_entry *pde, struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
typeof_member(struct proc_ops, proc_read) read;
read = pde->proc_ops->proc_read;
__auto_type read = pde->proc_ops->proc_read;
if (read)
return read(file, buf, count, ppos);
return -EIO;
@ -327,9 +325,7 @@ static ssize_t proc_reg_read(struct file *file, char __user *buf, size_t count,
static ssize_t pde_write(struct proc_dir_entry *pde, struct file *file, const char __user *buf, size_t count, loff_t *ppos)
{
typeof_member(struct proc_ops, proc_write) write;
write = pde->proc_ops->proc_write;
__auto_type write = pde->proc_ops->proc_write;
if (write)
return write(file, buf, count, ppos);
return -EIO;
@ -351,9 +347,7 @@ static ssize_t proc_reg_write(struct file *file, const char __user *buf, size_t
static __poll_t pde_poll(struct proc_dir_entry *pde, struct file *file, struct poll_table_struct *pts)
{
typeof_member(struct proc_ops, proc_poll) poll;
poll = pde->proc_ops->proc_poll;
__auto_type poll = pde->proc_ops->proc_poll;
if (poll)
return poll(file, pts);
return DEFAULT_POLLMASK;
@ -375,9 +369,7 @@ static __poll_t proc_reg_poll(struct file *file, struct poll_table_struct *pts)
static long pde_ioctl(struct proc_dir_entry *pde, struct file *file, unsigned int cmd, unsigned long arg)
{
typeof_member(struct proc_ops, proc_ioctl) ioctl;
ioctl = pde->proc_ops->proc_ioctl;
__auto_type ioctl = pde->proc_ops->proc_ioctl;
if (ioctl)
return ioctl(file, cmd, arg);
return -ENOTTY;
@ -400,9 +392,7 @@ static long proc_reg_unlocked_ioctl(struct file *file, unsigned int cmd, unsigne
#ifdef CONFIG_COMPAT
static long pde_compat_ioctl(struct proc_dir_entry *pde, struct file *file, unsigned int cmd, unsigned long arg)
{
typeof_member(struct proc_ops, proc_compat_ioctl) compat_ioctl;
compat_ioctl = pde->proc_ops->proc_compat_ioctl;
__auto_type compat_ioctl = pde->proc_ops->proc_compat_ioctl;
if (compat_ioctl)
return compat_ioctl(file, cmd, arg);
return -ENOTTY;
@ -424,9 +414,7 @@ static long proc_reg_compat_ioctl(struct file *file, unsigned int cmd, unsigned
static int pde_mmap(struct proc_dir_entry *pde, struct file *file, struct vm_area_struct *vma)
{
typeof_member(struct proc_ops, proc_mmap) mmap;
mmap = pde->proc_ops->proc_mmap;
__auto_type mmap = pde->proc_ops->proc_mmap;
if (mmap)
return mmap(file, vma);
return -EIO;
@ -483,7 +471,6 @@ static int proc_reg_open(struct inode *inode, struct file *file)
struct proc_dir_entry *pde = PDE(inode);
int rv = 0;
typeof_member(struct proc_ops, proc_open) open;
typeof_member(struct proc_ops, proc_release) release;
struct pde_opener *pdeo;
if (!pde->proc_ops->proc_lseek)
@ -510,7 +497,7 @@ static int proc_reg_open(struct inode *inode, struct file *file)
if (!use_pde(pde))
return -ENOENT;
release = pde->proc_ops->proc_release;
__auto_type release = pde->proc_ops->proc_release;
if (release) {
pdeo = kmem_cache_alloc(pde_opener_cache, GFP_KERNEL);
if (!pdeo) {
@ -547,9 +534,7 @@ static int proc_reg_release(struct inode *inode, struct file *file)
struct pde_opener *pdeo;
if (pde_is_permanent(pde)) {
typeof_member(struct proc_ops, proc_release) release;
release = pde->proc_ops->proc_release;
__auto_type release = pde->proc_ops->proc_release;
if (release) {
return release(inode, file);
}

15
fs/proc/task_mmu.c
View File

@ -543,21 +543,6 @@ static int do_procmap_query(struct proc_maps_private *priv, void __user *uarg)
}
}
if (karg.build_id_size) {
__u32 build_id_sz;
err = build_id_parse(vma, build_id_buf, &build_id_sz);
if (err) {
karg.build_id_size = 0;
} else {
if (karg.build_id_size < build_id_sz) {
err = -ENAMETOOLONG;
goto out;
}
karg.build_id_size = build_id_sz;
}
}
if (karg.vma_name_size) {
size_t name_buf_sz = min_t(size_t, PATH_MAX, karg.vma_name_size);
const struct path *path;

6
fs/squashfs/decompressor_multi_percpu.c
View File

@ -46,7 +46,7 @@ static void *squashfs_decompressor_create(struct squashfs_sb_info *msblk,
}
kfree(comp_opts);
return (__force void *) percpu;
return (void *)(__force unsigned long) percpu;
out:
for_each_possible_cpu(cpu) {
@ -61,7 +61,7 @@ out:
static void squashfs_decompressor_destroy(struct squashfs_sb_info *msblk)
{
struct squashfs_stream __percpu *percpu =
(struct squashfs_stream __percpu *) msblk->stream;
(void __percpu *)(unsigned long) msblk->stream;
struct squashfs_stream *stream;
int cpu;
@ -79,7 +79,7 @@ static int squashfs_decompress(struct squashfs_sb_info *msblk, struct bio *bio,
{
struct squashfs_stream *stream;
struct squashfs_stream __percpu *percpu =
(struct squashfs_stream __percpu *) msblk->stream;
(void __percpu *)(unsigned long) msblk->stream;
int res;
local_lock(&percpu->lock);

5
include/linux/decompress/unxz.h
View File

@ -1,10 +1,9 @@
/* SPDX-License-Identifier: 0BSD */
/*
* Wrapper for decompressing XZ-compressed kernel, initramfs, and initrd
*
* Author: Lasse Collin <lasse.collin@tukaani.org>
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*/
#ifndef DECOMPRESS_UNXZ_H

36
include/linux/fault-inject.h
View File

@ -2,13 +2,17 @@
#ifndef _LINUX_FAULT_INJECT_H
#define _LINUX_FAULT_INJECT_H
#include <linux/err.h>
#include <linux/types.h>
struct dentry;
struct kmem_cache;
#ifdef CONFIG_FAULT_INJECTION
#include <linux/types.h>
#include <linux/debugfs.h>
#include <linux/atomic.h>
#include <linux/configfs.h>
#include <linux/ratelimit.h>
#include <linux/atomic.h>
/*
* For explanation of the elements of this struct, see
@ -51,6 +55,28 @@ int setup_fault_attr(struct fault_attr *attr, char *str);
bool should_fail_ex(struct fault_attr *attr, ssize_t size, int flags);
bool should_fail(struct fault_attr *attr, ssize_t size);
#else /* CONFIG_FAULT_INJECTION */
struct fault_attr {
};
#define DECLARE_FAULT_ATTR(name) struct fault_attr name = {}
static inline int setup_fault_attr(struct fault_attr *attr, char *str)
{
return 0; /* Note: 0 means error for __setup() handlers! */
}
static inline bool should_fail_ex(struct fault_attr *attr, ssize_t size, int flags)
{
return false;
}
static inline bool should_fail(struct fault_attr *attr, ssize_t size)
{
return false;
}
#endif /* CONFIG_FAULT_INJECTION */
#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
struct dentry *fault_create_debugfs_attr(const char *name,
@ -87,10 +113,6 @@ static inline void fault_config_init(struct fault_config *config,
#endif /* CONFIG_FAULT_INJECTION_CONFIGFS */
#endif /* CONFIG_FAULT_INJECTION */
struct kmem_cache;
#ifdef CONFIG_FAIL_PAGE_ALLOC
bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order);
#else

4
include/linux/lru_cache.h
View File

@ -119,7 +119,7 @@ write intent log information, three of which are mentioned here.
*/
/* this defines an element in a tracked set
* .colision is for hash table lookup.
* .collision is for hash table lookup.
* When we process a new IO request, we know its sector, thus can deduce the
* region number (label) easily. To do the label -> object lookup without a
* full list walk, we use a simple hash table.
@ -145,7 +145,7 @@ write intent log information, three of which are mentioned here.
* But it avoids high order page allocations in kmalloc.
*/
struct lc_element {
struct hlist_node colision;
struct hlist_node collision;
struct list_head list; /* LRU list or free list */
unsigned refcnt;
/* back "pointer" into lc_cache->element[index],

1
include/linux/mmc/host.h
View File

@ -10,6 +10,7 @@
#include <linux/sched.h>
#include <linux/device.h>
#include <linux/fault-inject.h>
#include <linux/debugfs.h>
#include <linux/mmc/core.h>
#include <linux/mmc/card.h>

2
include/linux/ratelimit_types.h
View File

@ -19,8 +19,8 @@ struct ratelimit_state {
int burst;
int printed;
int missed;
unsigned int flags;
unsigned long begin;
unsigned long flags;
};
#define RATELIMIT_STATE_INIT_FLAGS(name, interval_init, burst_init, flags_init) { \

81
include/linux/xz.h
View File

@ -1,11 +1,10 @@
/* SPDX-License-Identifier: 0BSD */
/*
* XZ decompressor
*
* Authors: Lasse Collin <lasse.collin@tukaani.org>
* Igor Pavlov <https://7-zip.org/>
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*/
#ifndef XZ_H
@ -19,11 +18,6 @@
# include <stdint.h>
#endif
/* In Linux, this is used to make extern functions static when needed. */
#ifndef XZ_EXTERN
# define XZ_EXTERN extern
#endif
/**
* enum xz_mode - Operation mode
*
@ -143,7 +137,7 @@ struct xz_buf {
size_t out_size;
};
/**
/*
* struct xz_dec - Opaque type to hold the XZ decoder state
*/
struct xz_dec;
@ -191,7 +185,7 @@ struct xz_dec;
* ready to be used with xz_dec_run(). If memory allocation fails,
* xz_dec_init() returns NULL.
*/
XZ_EXTERN struct xz_dec *xz_dec_init(enum xz_mode mode, uint32_t dict_max);
struct xz_dec *xz_dec_init(enum xz_mode mode, uint32_t dict_max);
/**
* xz_dec_run() - Run the XZ decoder
@ -211,7 +205,7 @@ XZ_EXTERN struct xz_dec *xz_dec_init(enum xz_mode mode, uint32_t dict_max);
* get that amount valid data from the beginning of the stream. You must use
* the multi-call decoder if you don't want to uncompress the whole stream.
*/
XZ_EXTERN enum xz_ret xz_dec_run(struct xz_dec *s, struct xz_buf *b);
enum xz_ret xz_dec_run(struct xz_dec *s, struct xz_buf *b);
/**
* xz_dec_reset() - Reset an already allocated decoder state
@ -224,32 +218,38 @@ XZ_EXTERN enum xz_ret xz_dec_run(struct xz_dec *s, struct xz_buf *b);
* xz_dec_run(). Thus, explicit call to xz_dec_reset() is useful only in
* multi-call mode.
*/
XZ_EXTERN void xz_dec_reset(struct xz_dec *s);
void xz_dec_reset(struct xz_dec *s);
/**
* xz_dec_end() - Free the memory allocated for the decoder state
* @s: Decoder state allocated using xz_dec_init(). If s is NULL,
* this function does nothing.
*/
XZ_EXTERN void xz_dec_end(struct xz_dec *s);
void xz_dec_end(struct xz_dec *s);
/**
* DOC: MicroLZMA decompressor
*
* This MicroLZMA header format was created for use in EROFS but may be used
* by others too. **In most cases one needs the XZ APIs above instead.**
*
* The compressed format supported by this decoder is a raw LZMA stream
* whose first byte (always 0x00) has been replaced with bitwise-negation
* of the LZMA properties (lc/lp/pb) byte. For example, if lc/lp/pb is
* 3/0/2, the first byte is 0xA2. This way the first byte can never be 0x00.
* Just like with LZMA2, lc + lp <= 4 must be true. The LZMA end-of-stream
* marker must not be used. The unused values are reserved for future use.
*/
/*
* Decompressor for MicroLZMA, an LZMA variant with a very minimal header.
* See xz_dec_microlzma_alloc() below for details.
*
* These functions aren't used or available in preboot code and thus aren't
* marked with XZ_EXTERN. This avoids warnings about static functions that
* are never defined.
*/
/**
* struct xz_dec_microlzma - Opaque type to hold the MicroLZMA decoder state
*/
struct xz_dec_microlzma;
/**
* xz_dec_microlzma_alloc() - Allocate memory for the MicroLZMA decoder
* @mode XZ_SINGLE or XZ_PREALLOC
* @dict_size LZMA dictionary size. This must be at least 4 KiB and
* @mode: XZ_SINGLE or XZ_PREALLOC
* @dict_size: LZMA dictionary size. This must be at least 4 KiB and
* at most 3 GiB.
*
* In contrast to xz_dec_init(), this function only allocates the memory
@ -262,40 +262,30 @@ struct xz_dec_microlzma;
* On success, xz_dec_microlzma_alloc() returns a pointer to
* struct xz_dec_microlzma. If memory allocation fails or
* dict_size is invalid, NULL is returned.
*
* The compressed format supported by this decoder is a raw LZMA stream
* whose first byte (always 0x00) has been replaced with bitwise-negation
* of the LZMA properties (lc/lp/pb) byte. For example, if lc/lp/pb is
* 3/0/2, the first byte is 0xA2. This way the first byte can never be 0x00.
* Just like with LZMA2, lc + lp <= 4 must be true. The LZMA end-of-stream
* marker must not be used. The unused values are reserved for future use.
* This MicroLZMA header format was created for use in EROFS but may be used
* by others too.
*/
extern struct xz_dec_microlzma *xz_dec_microlzma_alloc(enum xz_mode mode,
struct xz_dec_microlzma *xz_dec_microlzma_alloc(enum xz_mode mode,
uint32_t dict_size);
/**
* xz_dec_microlzma_reset() - Reset the MicroLZMA decoder state
* @s Decoder state allocated using xz_dec_microlzma_alloc()
* @comp_size Compressed size of the input stream
* @uncomp_size Uncompressed size of the input stream. A value smaller
* @s: Decoder state allocated using xz_dec_microlzma_alloc()
* @comp_size: Compressed size of the input stream
* @uncomp_size: Uncompressed size of the input stream. A value smaller
* than the real uncompressed size of the input stream can
* be specified if uncomp_size_is_exact is set to false.
* uncomp_size can never be set to a value larger than the
* expected real uncompressed size because it would eventually
* result in XZ_DATA_ERROR.
* @uncomp_size_is_exact This is an int instead of bool to avoid
* @uncomp_size_is_exact: This is an int instead of bool to avoid
* requiring stdbool.h. This should normally be set to true.
* When this is set to false, error detection is weaker.
*/
extern void xz_dec_microlzma_reset(struct xz_dec_microlzma *s,
uint32_t comp_size, uint32_t uncomp_size,
int uncomp_size_is_exact);
void xz_dec_microlzma_reset(struct xz_dec_microlzma *s, uint32_t comp_size,
uint32_t uncomp_size, int uncomp_size_is_exact);
/**
* xz_dec_microlzma_run() - Run the MicroLZMA decoder
* @s Decoder state initialized using xz_dec_microlzma_reset()
* @s: Decoder state initialized using xz_dec_microlzma_reset()
* @b: Input and output buffers
*
* This works similarly to xz_dec_run() with a few important differences.
@ -329,15 +319,14 @@ extern void xz_dec_microlzma_reset(struct xz_dec_microlzma *s,
* may be changed normally like with XZ_PREALLOC. This way input data can be
* provided from non-contiguous memory.
*/
extern enum xz_ret xz_dec_microlzma_run(struct xz_dec_microlzma *s,
struct xz_buf *b);
enum xz_ret xz_dec_microlzma_run(struct xz_dec_microlzma *s, struct xz_buf *b);
/**
* xz_dec_microlzma_end() - Free the memory allocated for the decoder state
* @s: Decoder state allocated using xz_dec_microlzma_alloc().
* If s is NULL, this function does nothing.
*/
extern void xz_dec_microlzma_end(struct xz_dec_microlzma *s);
void xz_dec_microlzma_end(struct xz_dec_microlzma *s);
/*
* Standalone build (userspace build or in-kernel build for boot time use)
@ -358,13 +347,13 @@ extern void xz_dec_microlzma_end(struct xz_dec_microlzma *s);
* This must be called before any other xz_* function to initialize
* the CRC32 lookup table.
*/
XZ_EXTERN void xz_crc32_init(void);
void xz_crc32_init(void);
/*
* Update CRC32 value using the polynomial from IEEE-802.3. To start a new
* calculation, the third argument must be zero. To continue the calculation,
* the previously returned value is passed as the third argument.
*/
XZ_EXTERN uint32_t xz_crc32(const uint8_t *buf, size_t size, uint32_t crc);
uint32_t xz_crc32(const uint8_t *buf, size_t size, uint32_t crc);
#endif
#endif

1
include/ufs/ufshcd.h
View File

@ -17,6 +17,7 @@
#include <linux/blk-mq.h>
#include <linux/devfreq.h>
#include <linux/fault-inject.h>
#include <linux/debugfs.h>
#include <linux/msi.h>
#include <linux/pm_runtime.h>
#include <linux/dma-direction.h>

5
init/Kconfig
View File

@ -310,8 +310,9 @@ config KERNEL_XZ
BCJ filters which can improve compression ratio of executable
code. The size of the kernel is about 30% smaller with XZ in
comparison to gzip. On architectures for which there is a BCJ
filter (i386, x86_64, ARM, IA-64, PowerPC, and SPARC), XZ
will create a few percent smaller kernel than plain LZMA.
filter (i386, x86_64, ARM, ARM64, RISC-V, big endian PowerPC,
and SPARC), XZ will create a few percent smaller kernel than
plain LZMA.
The speed is about the same as with LZMA: The decompression
speed of XZ is better than that of bzip2 but worse than gzip

33
kernel/crash_core.c
View File

@ -505,7 +505,7 @@ int crash_check_hotplug_support(void)
crash_hotplug_lock();
/* Obtain lock while reading crash information */
if (!kexec_trylock()) {
pr_info("kexec_trylock() failed, elfcorehdr may be inaccurate\n");
pr_info("kexec_trylock() failed, kdump image may be inaccurate\n");
crash_hotplug_unlock();
return 0;
}
@ -520,18 +520,25 @@ int crash_check_hotplug_support(void)
}
/*
* To accurately reflect hot un/plug changes of cpu and memory resources
* (including onling and offlining of those resources), the elfcorehdr
* (which is passed to the crash kernel via the elfcorehdr= parameter)
* must be updated with the new list of CPUs and memories.
* To accurately reflect hot un/plug changes of CPU and Memory resources
* (including onling and offlining of those resources), the relevant
* kexec segments must be updated with latest CPU and Memory resources.
*
* In order to make changes to elfcorehdr, two conditions are needed:
* First, the segment containing the elfcorehdr must be large enough
* to permit a growing number of resources; the elfcorehdr memory size
* is based on NR_CPUS_DEFAULT and CRASH_MAX_MEMORY_RANGES.
* Second, purgatory must explicitly exclude the elfcorehdr from the
* list of segments it checks (since the elfcorehdr changes and thus
* would require an update to purgatory itself to update the digest).
* Architectures must ensure two things for all segments that need
* updating during hotplug events:
*
* 1. Segments must be large enough to accommodate a growing number of
* resources.
* 2. Exclude the segments from SHA verification.
*
* For example, on most architectures, the elfcorehdr (which is passed
* to the crash kernel via the elfcorehdr= parameter) must include the
* new list of CPUs and memory. To make changes to the elfcorehdr, it
* should be large enough to permit a growing number of CPU and Memory
* resources. One can estimate the elfcorehdr memory size based on
* NR_CPUS_DEFAULT and CRASH_MAX_MEMORY_RANGES. The elfcorehdr is
* excluded from SHA verification by default if the architecture
* supports crash hotplug.
*/
static void crash_handle_hotplug_event(unsigned int hp_action, unsigned int cpu, void *arg)
{
@ -540,7 +547,7 @@ static void crash_handle_hotplug_event(unsigned int hp_action, unsigned int cpu,
crash_hotplug_lock();
/* Obtain lock while changing crash information */
if (!kexec_trylock()) {
pr_info("kexec_trylock() failed, elfcorehdr may be inaccurate\n");
pr_info("kexec_trylock() failed, kdump image may be inaccurate\n");
crash_hotplug_unlock();
return;
}

3
kernel/crash_reserve.c
View File

@ -335,6 +335,9 @@ int __init parse_crashkernel(char *cmdline,
if (!*crash_size)
ret = -EINVAL;
if (*crash_size >= system_ram)
ret = -EINVAL;
return ret;
}

1
kernel/futex/core.c
View File

@ -34,6 +34,7 @@
#include <linux/compat.h>
#include <linux/jhash.h>
#include <linux/pagemap.h>
#include <linux/debugfs.h>
#include <linux/plist.h>
#include <linux/memblock.h>
#include <linux/fault-inject.h>

3
kernel/kexec_internal.h
View File

@ -23,7 +23,8 @@ int kimage_is_destination_range(struct kimage *image,
extern atomic_t __kexec_lock;
static inline bool kexec_trylock(void)
{
return atomic_cmpxchg_acquire(&__kexec_lock, 0, 1) == 0;
int old = 0;
return atomic_try_cmpxchg_acquire(&__kexec_lock, &old, 1);
}
static inline void kexec_unlock(void)
{

1
kernel/locking/test-ww_mutex.c
View File

@ -697,3 +697,4 @@ module_exit(test_ww_mutex_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Intel Corporation");
MODULE_DESCRIPTION("API test facility for ww_mutexes");

5
kernel/user_namespace.c
View File

@ -853,9 +853,8 @@ static int sort_idmaps(struct uid_gid_map *map)
cmp_extents_forward, NULL);
/* Only copy the memory from forward we actually need. */
map->reverse = kmemdup(map->forward,
map->nr_extents * sizeof(struct uid_gid_extent),
GFP_KERNEL);
map->reverse = kmemdup_array(map->forward, map->nr_extents,
sizeof(struct uid_gid_extent), GFP_KERNEL);
if (!map->reverse)
return -ENOMEM;

3
kernel/watchdog.c
View File

@ -1203,6 +1203,9 @@ static void __init lockup_detector_delay_init(struct work_struct *work)
ret = watchdog_hardlockup_probe();
if (ret) {
if (ret == -ENODEV)
pr_info("NMI not fully supported\n");
else
pr_info("Delayed init of the lockup detector failed: %d\n", ret);
pr_info("Hard watchdog permanently disabled\n");
return;

12
lib/Kconfig.debug
View File

@ -1515,7 +1515,7 @@ config LOCKDEP_BITS
config LOCKDEP_CHAINS_BITS
int "Bitsize for MAX_LOCKDEP_CHAINS"
depends on LOCKDEP && !LOCKDEP_SMALL
range 10 30
range 10 21
default 16
help
Try increasing this value if you hit "BUG: MAX_LOCKDEP_CHAINS too low!" message.
@ -2289,6 +2289,16 @@ config TEST_DIV64
If unsure, say N.
config TEST_MULDIV64
tristate "mul_u64_u64_div_u64() test"
depends on DEBUG_KERNEL || m
help
Enable this to turn on 'mul_u64_u64_div_u64()' function test.
This test is executed only once during system boot (so affects
only boot time), or at module load time.
If unsure, say N.
config TEST_IOV_ITER
tristate "Test iov_iter operation" if !KUNIT_ALL_TESTS
depends on KUNIT

1
lib/Makefile
View File

@ -14,6 +14,7 @@ KCOV_INSTRUMENT_list_debug.o := n
KCOV_INSTRUMENT_debugobjects.o := n
KCOV_INSTRUMENT_dynamic_debug.o := n
KCOV_INSTRUMENT_fault-inject.o := n
KCOV_INSTRUMENT_find_bit.o := n
# string.o implements standard library functions like memset/memcpy etc.
# Use -ffreestanding to ensure that the compiler does not try to "optimize"

4
lib/bcd.c
View File

@ -10,6 +10,8 @@ EXPORT_SYMBOL(_bcd2bin);
unsigned char _bin2bcd(unsigned val)
{
return ((val / 10) << 4) + val % 10;
const unsigned int t = (val * 103) >> 10;
return (t << 4) | (val - t * 10);
}
EXPORT_SYMBOL(_bin2bcd);

9
lib/checksum_kunit.c
View File

@ -468,12 +468,9 @@ static __wsum to_wsum(u32 x)
static void assert_setup_correct(struct kunit *test)
{
CHECK_EQ(sizeof(random_buf) / sizeof(random_buf[0]), MAX_LEN);
CHECK_EQ(sizeof(expected_results) / sizeof(expected_results[0]),
MAX_LEN);
CHECK_EQ(sizeof(init_sums_no_overflow) /
sizeof(init_sums_no_overflow[0]),
MAX_LEN);
CHECK_EQ(ARRAY_SIZE(random_buf), MAX_LEN);
CHECK_EQ(ARRAY_SIZE(expected_results), MAX_LEN);
CHECK_EQ(ARRAY_SIZE(init_sums_no_overflow), MAX_LEN);
}
/*

2
lib/closure.c
View File

@ -278,7 +278,7 @@ static int debug_show(struct seq_file *f, void *data)
seq_printf(f, " W %pS\n",
(void *) cl->waiting_on);
seq_puts(f, "\n");
seq_putc(f, '\n');
}
spin_unlock_irq(&closure_list_lock);

36
lib/decompress_unxz.c
View File

@ -1,10 +1,9 @@
// SPDX-License-Identifier: 0BSD
/*
* Wrapper for decompressing XZ-compressed kernel, initramfs, and initrd
*
* Author: Lasse Collin <lasse.collin@tukaani.org>
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*/
/*
@ -103,12 +102,11 @@
#ifdef STATIC
# define XZ_PREBOOT
#else
#include <linux/decompress/unxz.h>
# include <linux/decompress/unxz.h>
#endif
#ifdef __KERNEL__
# include <linux/decompress/mm.h>
#endif
#define XZ_EXTERN STATIC
#ifndef XZ_PREBOOT
# include <linux/slab.h>
@ -127,11 +125,21 @@
#ifdef CONFIG_X86
# define XZ_DEC_X86
#endif
#ifdef CONFIG_PPC
#if defined(CONFIG_PPC) && defined(CONFIG_CPU_BIG_ENDIAN)
# define XZ_DEC_POWERPC
#endif
#ifdef CONFIG_ARM
# ifdef CONFIG_THUMB2_KERNEL
# define XZ_DEC_ARMTHUMB
# else
# define XZ_DEC_ARM
# endif
#endif
#ifdef CONFIG_ARM64
# define XZ_DEC_ARM64
#endif
#ifdef CONFIG_RISCV
# define XZ_DEC_RISCV
#endif
#ifdef CONFIG_SPARC
# define XZ_DEC_SPARC
@ -220,7 +228,7 @@ void *memmove(void *dest, const void *src, size_t size)
#endif
/*
* Since we need memmove anyway, would use it as memcpy too.
* Since we need memmove anyway, we could use it as memcpy too.
* Commented out for now to avoid breaking things.
*/
/*
@ -390,17 +398,17 @@ error_alloc_state:
}
/*
* This macro is used by architecture-specific files to decompress
* This function is used by architecture-specific files to decompress
* the kernel image.
*/
#ifdef XZ_PREBOOT
STATIC int INIT __decompress(unsigned char *buf, long len,
long (*fill)(void*, unsigned long),
long (*flush)(void*, unsigned long),
unsigned char *out_buf, long olen,
long *pos,
STATIC int INIT __decompress(unsigned char *in, long in_size,
long (*fill)(void *dest, unsigned long size),
long (*flush)(void *src, unsigned long size),
unsigned char *out, long out_size,
long *in_used,
void (*error)(char *x))
{
return unxz(buf, len, fill, flush, out_buf, pos, error);
return unxz(in, in_size, fill, flush, out, in_used, error);
}
#endif

2
lib/dim/Makefile
View File

@ -4,4 +4,4 @@
obj-$(CONFIG_DIMLIB) += dimlib.o
dimlib-objs := dim.o net_dim.o rdma_dim.o
dimlib-y := dim.o net_dim.o rdma_dim.o

4
lib/dynamic_debug.c
View File

@ -1147,7 +1147,7 @@ static int ddebug_proc_show(struct seq_file *m, void *p)
iter->table->mod_name, dp->function,
ddebug_describe_flags(dp->flags, &flags));
seq_escape_str(m, dp->format, ESCAPE_SPACE, "\t\r\n\"");
seq_puts(m, "\"");
seq_putc(m, '"');
if (dp->class_id != _DPRINTK_CLASS_DFLT) {
class = ddebug_class_name(iter, dp);
@ -1156,7 +1156,7 @@ static int ddebug_proc_show(struct seq_file *m, void *p)
else
seq_printf(m, " class unknown, _id:%d", dp->class_id);
}
seq_puts(m, "\n");
seq_putc(m, '\n');
return 0;
}

1
lib/fault-inject.c
View File

@ -2,6 +2,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/random.h>
#include <linux/debugfs.h>
#include <linux/sched.h>
#include <linux/stat.h>
#include <linux/types.h>

2
lib/glob.c
View File

@ -68,6 +68,8 @@ bool __pure glob_match(char const *pat, char const *str)
back_str = --str; /* Allow zero-length match */
break;
case '[': { /* Character class */
if (c == '\0') /* No possible match */
return false;
bool match = false, inverted = (*pat == '!');
char const *class = pat + inverted;
unsigned char a = *class++;

10
lib/list-test.c
View File

@ -102,6 +102,8 @@ static void list_test_list_replace(struct kunit *test)
/* now: [list] -> a_new -> b */
KUNIT_EXPECT_PTR_EQ(test, list.next, &a_new);
KUNIT_EXPECT_PTR_EQ(test, b.prev, &a_new);
KUNIT_EXPECT_PTR_EQ(test, a_new.next, &b);
KUNIT_EXPECT_PTR_EQ(test, a_new.prev, &list);
}
static void list_test_list_replace_init(struct kunit *test)
@ -118,6 +120,8 @@ static void list_test_list_replace_init(struct kunit *test)
/* now: [list] -> a_new -> b */
KUNIT_EXPECT_PTR_EQ(test, list.next, &a_new);
KUNIT_EXPECT_PTR_EQ(test, b.prev, &a_new);
KUNIT_EXPECT_PTR_EQ(test, a_new.next, &b);
KUNIT_EXPECT_PTR_EQ(test, a_new.prev, &list);
/* check a_old is empty (initialized) */
KUNIT_EXPECT_TRUE(test, list_empty_careful(&a_old));
@ -404,10 +408,13 @@ static void list_test_list_cut_position(struct kunit *test)
KUNIT_EXPECT_EQ(test, i, 2);
i = 0;
list_for_each(cur, &list1) {
KUNIT_EXPECT_PTR_EQ(test, cur, &entries[i]);
i++;
}
KUNIT_EXPECT_EQ(test, i, 1);
}
static void list_test_list_cut_before(struct kunit *test)
@ -432,10 +439,13 @@ static void list_test_list_cut_before(struct kunit *test)
KUNIT_EXPECT_EQ(test, i, 1);
i = 0;
list_for_each(cur, &list1) {
KUNIT_EXPECT_PTR_EQ(test, cur, &entries[i]);
i++;
}
KUNIT_EXPECT_EQ(test, i, 2);
}
static void list_test_list_splice(struct kunit *test)

10
lib/lru_cache.c
View File

@ -243,7 +243,7 @@ static struct lc_element *__lc_find(struct lru_cache *lc, unsigned int enr,
BUG_ON(!lc);
BUG_ON(!lc->nr_elements);
hlist_for_each_entry(e, lc_hash_slot(lc, enr), colision) {
hlist_for_each_entry(e, lc_hash_slot(lc, enr), collision) {
/* "about to be changed" elements, pending transaction commit,
* are hashed by their "new number". "Normal" elements have
* lc_number == lc_new_number. */
@ -303,7 +303,7 @@ void lc_del(struct lru_cache *lc, struct lc_element *e)
BUG_ON(e->refcnt);
e->lc_number = e->lc_new_number = LC_FREE;
hlist_del_init(&e->colision);
hlist_del_init(&e->collision);
list_move(&e->list, &lc->free);
RETURN();
}
@ -324,9 +324,9 @@ static struct lc_element *lc_prepare_for_change(struct lru_cache *lc, unsigned n
PARANOIA_LC_ELEMENT(lc, e);
e->lc_new_number = new_number;
if (!hlist_unhashed(&e->colision))
__hlist_del(&e->colision);
hlist_add_head(&e->colision, lc_hash_slot(lc, new_number));
if (!hlist_unhashed(&e->collision))
__hlist_del(&e->collision);
hlist_add_head(&e->collision, lc_hash_slot(lc, new_number));
list_move(&e->list, &lc->to_be_changed);
return e;

1
lib/math/Makefile
View File

@ -7,4 +7,5 @@ obj-$(CONFIG_RATIONAL) += rational.o
obj-$(CONFIG_INT_POW_TEST) += tests/int_pow_kunit.o
obj-$(CONFIG_TEST_DIV64) += test_div64.o
obj-$(CONFIG_TEST_MULDIV64) += test_mul_u64_u64_div_u64.o
obj-$(CONFIG_RATIONAL_KUNIT_TEST) += rational-test.o

115
lib/math/div64.c
View File

@ -186,55 +186,84 @@ EXPORT_SYMBOL(iter_div_u64_rem);
#ifndef mul_u64_u64_div_u64
u64 mul_u64_u64_div_u64(u64 a, u64 b, u64 c)
{
u64 res = 0, div, rem;
int shift;
if (ilog2(a) + ilog2(b) <= 62)
return div64_u64(a * b, c);
/* can a * b overflow ? */
if (ilog2(a) + ilog2(b) > 62) {
#if defined(__SIZEOF_INT128__)
/* native 64x64=128 bits multiplication */
u128 prod = (u128)a * b;
u64 n_lo = prod, n_hi = prod >> 64;
#else
/* perform a 64x64=128 bits multiplication manually */
u32 a_lo = a, a_hi = a >> 32, b_lo = b, b_hi = b >> 32;
u64 x, y, z;
x = (u64)a_lo * b_lo;
y = (u64)a_lo * b_hi + (u32)(x >> 32);
z = (u64)a_hi * b_hi + (u32)(y >> 32);
y = (u64)a_hi * b_lo + (u32)y;
z += (u32)(y >> 32);
x = (y << 32) + (u32)x;
u64 n_lo = x, n_hi = z;
#endif
/* make sure c is not zero, trigger exception otherwise */
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdiv-by-zero"
if (unlikely(c == 0))
return 1/0;
#pragma GCC diagnostic pop
int shift = __builtin_ctzll(c);
/* try reducing the fraction in case the dividend becomes <= 64 bits */
if ((n_hi >> shift) == 0) {
u64 n = shift ? (n_lo >> shift) | (n_hi << (64 - shift)) : n_lo;
return div64_u64(n, c >> shift);
/*
* Note that the algorithm after the if block below might lose
* some precision and the result is more exact for b > a. So
* exchange a and b if a is bigger than b.
*
* For example with a = 43980465100800, b = 100000000, c = 1000000000
* the below calculation doesn't modify b at all because div == 0
* and then shift becomes 45 + 26 - 62 = 9 and so the result
* becomes 4398035251080. However with a and b swapped the exact
* result is calculated (i.e. 4398046510080).
* The remainder value if needed would be:
* res = div64_u64_rem(n, c >> shift, &rem);
* rem = (rem << shift) + (n_lo - (n << shift));
*/
if (a > b)
swap(a, b);
}
/*
* (b * a) / c is equal to
*
* (b / c) * a +
* (b % c) * a / c
*
* if nothing overflows. Can the 1st multiplication
* overflow? Yes, but we do not care: this can only
* happen if the end result can't fit in u64 anyway.
*
* So the code below does
*
* res = (b / c) * a;
* b = b % c;
*/
div = div64_u64_rem(b, c, &rem);
res = div * a;
b = rem;
if (n_hi >= c) {
/* overflow: result is unrepresentable in a u64 */
return -1;
}
/* Do the full 128 by 64 bits division */
shift = __builtin_clzll(c);
c <<= shift;
int p = 64 + shift;
u64 res = 0;
bool carry;
do {
carry = n_hi >> 63;
shift = carry ? 1 : __builtin_clzll(n_hi);
if (p < shift)
break;
p -= shift;
n_hi <<= shift;
n_hi |= n_lo >> (64 - shift);
n_lo <<= shift;
if (carry || (n_hi >= c)) {
n_hi -= c;
res |= 1ULL << p;
}
} while (n_hi);
/* The remainder value if needed would be n_hi << p */
shift = ilog2(a) + ilog2(b) - 62;
if (shift > 0) {
/* drop precision */
b >>= shift;
c >>= shift;
if (!c)
return res;
}
}
return res + div64_u64(a * b, c);
}
EXPORT_SYMBOL(mul_u64_u64_div_u64);
#endif

99
lib/math/test_mul_u64_u64_div_u64.c Normal file
View File

@ -0,0 +1,99 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2024 BayLibre SAS
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/init.h>
#include <linux/module.h>
#include <linux/printk.h>
#include <linux/math64.h>
typedef struct { u64 a; u64 b; u64 c; u64 result; } test_params;
static test_params test_values[] = {
/* this contains many edge values followed by a couple random values */
{ 0xb, 0x7, 0x3, 0x19 },
{ 0xffff0000, 0xffff0000, 0xf, 0x1110eeef00000000 },
{ 0xffffffff, 0xffffffff, 0x1, 0xfffffffe00000001 },
{ 0xffffffff, 0xffffffff, 0x2, 0x7fffffff00000000 },
{ 0x1ffffffff, 0xffffffff, 0x2, 0xfffffffe80000000 },
{ 0x1ffffffff, 0xffffffff, 0x3, 0xaaaaaaa9aaaaaaab },
{ 0x1ffffffff, 0x1ffffffff, 0x4, 0xffffffff00000000 },
{ 0xffff000000000000, 0xffff000000000000, 0xffff000000000001, 0xfffeffffffffffff },
{ 0x3333333333333333, 0x3333333333333333, 0x5555555555555555, 0x1eb851eb851eb851 },
{ 0x7fffffffffffffff, 0x2, 0x3, 0x5555555555555554 },
{ 0xffffffffffffffff, 0x2, 0x8000000000000000, 0x3 },
{ 0xffffffffffffffff, 0x2, 0xc000000000000000, 0x2 },
{ 0xffffffffffffffff, 0x4000000000000004, 0x8000000000000000, 0x8000000000000007 },
{ 0xffffffffffffffff, 0x4000000000000001, 0x8000000000000000, 0x8000000000000001 },
{ 0xffffffffffffffff, 0x8000000000000001, 0xffffffffffffffff, 0x8000000000000001 },
{ 0xfffffffffffffffe, 0x8000000000000001, 0xffffffffffffffff, 0x8000000000000000 },
{ 0xffffffffffffffff, 0x8000000000000001, 0xfffffffffffffffe, 0x8000000000000001 },
{ 0xffffffffffffffff, 0x8000000000000001, 0xfffffffffffffffd, 0x8000000000000002 },
{ 0x7fffffffffffffff, 0xffffffffffffffff, 0xc000000000000000, 0xaaaaaaaaaaaaaaa8 },
{ 0xffffffffffffffff, 0x7fffffffffffffff, 0xa000000000000000, 0xccccccccccccccca },
{ 0xffffffffffffffff, 0x7fffffffffffffff, 0x9000000000000000, 0xe38e38e38e38e38b },
{ 0x7fffffffffffffff, 0x7fffffffffffffff, 0x5000000000000000, 0xccccccccccccccc9 },
{ 0xffffffffffffffff, 0xfffffffffffffffe, 0xffffffffffffffff, 0xfffffffffffffffe },
{ 0xe6102d256d7ea3ae, 0x70a77d0be4c31201, 0xd63ec35ab3220357, 0x78f8bf8cc86c6e18 },
{ 0xf53bae05cb86c6e1, 0x3847b32d2f8d32e0, 0xcfd4f55a647f403c, 0x42687f79d8998d35 },
{ 0x9951c5498f941092, 0x1f8c8bfdf287a251, 0xa3c8dc5f81ea3fe2, 0x1d887cb25900091f },
{ 0x374fee9daa1bb2bb, 0x0d0bfbff7b8ae3ef, 0xc169337bd42d5179, 0x03bb2dbaffcbb961 },
{ 0xeac0d03ac10eeaf0, 0x89be05dfa162ed9b, 0x92bb1679a41f0e4b, 0xdc5f5cc9e270d216 },
};
/*
* The above table can be verified with the following shell script:
*
* #!/bin/sh
* sed -ne 's/^{ \+\(.*\), \+\(.*\), \+\(.*\), \+\(.*\) },$/\1 \2 \3 \4/p' \
* lib/math/test_mul_u64_u64_div_u64.c |
* while read a b c r; do
* expected=$( printf "obase=16; ibase=16; %X * %X / %X\n" $a $b $c | bc )
* given=$( printf "%X\n" $r )
* if [ "$expected" = "$given" ]; then
* echo "$a * $b / $c = $r OK"
* else
* echo "$a * $b / $c = $r is wrong" >&2
* echo "should be equivalent to 0x$expected" >&2
* exit 1
* fi
* done
*/
static int __init test_init(void)
{
int i;
pr_info("Starting mul_u64_u64_div_u64() test\n");
for (i = 0; i < ARRAY_SIZE(test_values); i++) {
u64 a = test_values[i].a;
u64 b = test_values[i].b;
u64 c = test_values[i].c;
u64 expected_result = test_values[i].result;
u64 result = mul_u64_u64_div_u64(a, b, c);
if (result != expected_result) {
pr_err("ERROR: 0x%016llx * 0x%016llx / 0x%016llx\n", a, b, c);
pr_err("ERROR: expected result: %016llx\n", expected_result);
pr_err("ERROR: obtained result: %016llx\n", result);
}
}
pr_info("Completed mul_u64_u64_div_u64() test\n");
return 0;
}
static void __exit test_exit(void)
{
}
module_init(test_init);
module_exit(test_exit);
MODULE_AUTHOR("Nicolas Pitre");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("mul_u64_u64_div_u64() test module");

2
lib/percpu_counter.c
View File

@ -209,7 +209,7 @@ int __percpu_counter_init_many(struct percpu_counter *fbc, s64 amount,
INIT_LIST_HEAD(&fbc[i].list);
#endif
fbc[i].count = amount;
fbc[i].counters = (void *)counters + (i * counter_size);
fbc[i].counters = (void __percpu *)counters + i * counter_size;
debug_percpu_counter_activate(&fbc[i]);
}

2
lib/rhashtable.c
View File

@ -189,7 +189,7 @@ static struct bucket_table *bucket_table_alloc(struct rhashtable *ht,
size = nbuckets;
if (tbl == NULL && (gfp & ~__GFP_NOFAIL) != GFP_KERNEL) {
if (tbl == NULL && !gfpflags_allow_blocking(gfp)) {
tbl = nested_bucket_table_alloc(ht, nbuckets, gfp);
nbuckets = 0;
}

2
lib/test_fpu_glue.c
View File

@ -42,7 +42,7 @@ static int __init test_fpu_init(void)
return -EINVAL;
selftest_dir = debugfs_create_dir("selftest_helpers", NULL);
if (!selftest_dir)
if (IS_ERR(selftest_dir))
return -ENOMEM;
debugfs_create_file_unsafe("test_fpu", 0444, selftest_dir, NULL,

1
lib/test_objpool.c
View File

@ -687,4 +687,5 @@ static void __exit ot_mod_exit(void)
module_init(ot_mod_init);
module_exit(ot_mod_exit);
MODULE_DESCRIPTION("Test module for lockless object pool");
MODULE_LICENSE("GPL");

13
lib/xz/Kconfig
View File

@ -5,7 +5,8 @@ config XZ_DEC
help
LZMA2 compression algorithm and BCJ filters are supported using
the .xz file format as the container. For integrity checking,
CRC32 is supported. See Documentation/staging/xz.rst for more information.
CRC32 is supported. See Documentation/staging/xz.rst for more
information.
if XZ_DEC
@ -29,11 +30,21 @@ config XZ_DEC_ARMTHUMB
default y
select XZ_DEC_BCJ
config XZ_DEC_ARM64
bool "ARM64 BCJ filter decoder" if EXPERT
default y
select XZ_DEC_BCJ
config XZ_DEC_SPARC
bool "SPARC BCJ filter decoder" if EXPERT
default y
select XZ_DEC_BCJ
config XZ_DEC_RISCV
bool "RISC-V BCJ filter decoder" if EXPERT
default y
select XZ_DEC_BCJ
config XZ_DEC_MICROLZMA
bool "MicroLZMA decoder"
default n

11
lib/xz/xz_crc32.c
View File

@ -1,11 +1,10 @@
// SPDX-License-Identifier: 0BSD
/*
* CRC32 using the polynomial from IEEE-802.3
*
* Authors: Lasse Collin <lasse.collin@tukaani.org>
* Igor Pavlov <https://7-zip.org/>
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*/
/*
@ -27,9 +26,9 @@
STATIC_RW_DATA uint32_t xz_crc32_table[256];
XZ_EXTERN void xz_crc32_init(void)
void xz_crc32_init(void)
{
const uint32_t poly = CRC32_POLY_LE;
const uint32_t poly = 0xEDB88320;
uint32_t i;
uint32_t j;
@ -46,7 +45,7 @@ XZ_EXTERN void xz_crc32_init(void)
return;
}
XZ_EXTERN uint32_t xz_crc32(const uint8_t *buf, size_t size, uint32_t crc)
uint32_t xz_crc32(const uint8_t *buf, size_t size, uint32_t crc)
{
crc = ~crc;

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