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0b6f15824c
Arm disabled hugetlb vmemmap optimization [1] because hugetlb vmemmap
optimization includes an update of both the permissions (writeable to
read-only) and the output address (pfn) of the vmemmap ptes. That is not
supported without unmapping of pte(marking it invalid) by some
architectures.
With DAX vmemmap optimization we don't require such pte updates and
architectures can enable DAX vmemmap optimization while having hugetlb
vmemmap optimization disabled. Hence split DAX optimization support into
a different config.
s390, loongarch and riscv don't have devdax support. So the DAX config is
not enabled for them. With this change, arm64 should be able to select
DAX optimization
[1] commit 060a2c92d1 ("arm64: mm: hugetlb: Disable HUGETLB_PAGE_OPTIMIZE_VMEMMAP")
Link: https://lkml.kernel.org/r/20230724190759.483013-8-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Joao Martins <joao.m.martins@oracle.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
385 lines
9.6 KiB
Plaintext
385 lines
9.6 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# File system configuration
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#
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menu "File systems"
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# Use unaligned word dcache accesses
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config DCACHE_WORD_ACCESS
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bool
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config VALIDATE_FS_PARSER
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bool "Validate filesystem parameter description"
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help
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Enable this to perform validation of the parameter description for a
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filesystem when it is registered.
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config FS_IOMAP
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bool
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# old blockdev_direct_IO implementation. Use iomap for new code instead
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config LEGACY_DIRECT_IO
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bool
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if BLOCK
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source "fs/ext2/Kconfig"
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source "fs/ext4/Kconfig"
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source "fs/jbd2/Kconfig"
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config FS_MBCACHE
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# Meta block cache for Extended Attributes (ext2/ext3/ext4)
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tristate
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default y if EXT2_FS=y && EXT2_FS_XATTR
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default y if EXT4_FS=y
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default m if EXT2_FS_XATTR || EXT4_FS
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source "fs/reiserfs/Kconfig"
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source "fs/jfs/Kconfig"
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source "fs/xfs/Kconfig"
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source "fs/gfs2/Kconfig"
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source "fs/ocfs2/Kconfig"
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source "fs/btrfs/Kconfig"
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source "fs/nilfs2/Kconfig"
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source "fs/f2fs/Kconfig"
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source "fs/zonefs/Kconfig"
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endif # BLOCK
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config FS_DAX
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bool "File system based Direct Access (DAX) support"
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depends on MMU
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depends on !(ARM || MIPS || SPARC)
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depends on ZONE_DEVICE || FS_DAX_LIMITED
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select FS_IOMAP
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select DAX
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help
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Direct Access (DAX) can be used on memory-backed block devices.
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If the block device supports DAX and the filesystem supports DAX,
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then you can avoid using the pagecache to buffer I/Os. Turning
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on this option will compile in support for DAX.
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For a DAX device to support file system access it needs to have
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struct pages. For the nfit based NVDIMMs this can be enabled
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using the ndctl utility:
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# ndctl create-namespace --force --reconfig=namespace0.0 \
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--mode=fsdax --map=mem
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See the 'create-namespace' man page for details on the overhead of
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--map=mem:
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https://docs.pmem.io/ndctl-user-guide/ndctl-man-pages/ndctl-create-namespace
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For ndctl to work CONFIG_DEV_DAX needs to be enabled as well. For most
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file systems DAX support needs to be manually enabled globally or
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per-inode using a mount option as well. See the file documentation in
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Documentation/filesystems/dax.rst for details.
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If you do not have a block device that is capable of using this,
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or if unsure, say N. Saying Y will increase the size of the kernel
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by about 5kB.
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config FS_DAX_PMD
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bool
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default FS_DAX
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depends on FS_DAX
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depends on ZONE_DEVICE
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depends on TRANSPARENT_HUGEPAGE
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# Selected by DAX drivers that do not expect filesystem DAX to support
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# get_user_pages() of DAX mappings. I.e. "limited" indicates no support
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# for fork() of processes with MAP_SHARED mappings or support for
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# direct-I/O to a DAX mapping.
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config FS_DAX_LIMITED
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bool
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# Posix ACL utility routines
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#
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# Note: Posix ACLs can be implemented without these helpers. Never use
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# this symbol for ifdefs in core code.
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#
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config FS_POSIX_ACL
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def_bool n
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config EXPORTFS
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tristate
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config EXPORTFS_BLOCK_OPS
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bool "Enable filesystem export operations for block IO"
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help
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This option enables the export operations for a filesystem to support
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external block IO.
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config FILE_LOCKING
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bool "Enable POSIX file locking API" if EXPERT
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default y
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help
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This option enables standard file locking support, required
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for filesystems like NFS and for the flock() system
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call. Disabling this option saves about 11k.
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source "fs/crypto/Kconfig"
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source "fs/verity/Kconfig"
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source "fs/notify/Kconfig"
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source "fs/quota/Kconfig"
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source "fs/autofs/Kconfig"
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source "fs/fuse/Kconfig"
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source "fs/overlayfs/Kconfig"
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menu "Caches"
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source "fs/netfs/Kconfig"
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source "fs/fscache/Kconfig"
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source "fs/cachefiles/Kconfig"
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endmenu
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if BLOCK
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menu "CD-ROM/DVD Filesystems"
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source "fs/isofs/Kconfig"
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source "fs/udf/Kconfig"
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endmenu
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endif # BLOCK
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if BLOCK
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menu "DOS/FAT/EXFAT/NT Filesystems"
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source "fs/fat/Kconfig"
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source "fs/exfat/Kconfig"
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source "fs/ntfs/Kconfig"
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source "fs/ntfs3/Kconfig"
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endmenu
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endif # BLOCK
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menu "Pseudo filesystems"
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source "fs/proc/Kconfig"
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source "fs/kernfs/Kconfig"
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source "fs/sysfs/Kconfig"
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config TMPFS
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bool "Tmpfs virtual memory file system support (former shm fs)"
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depends on SHMEM
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select MEMFD_CREATE
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help
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Tmpfs is a file system which keeps all files in virtual memory.
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Everything in tmpfs is temporary in the sense that no files will be
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created on your hard drive. The files live in memory and swap
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space. If you unmount a tmpfs instance, everything stored therein is
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lost.
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See <file:Documentation/filesystems/tmpfs.rst> for details.
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config TMPFS_POSIX_ACL
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bool "Tmpfs POSIX Access Control Lists"
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depends on TMPFS
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select TMPFS_XATTR
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select FS_POSIX_ACL
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help
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POSIX Access Control Lists (ACLs) support additional access rights
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for users and groups beyond the standard owner/group/world scheme,
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and this option selects support for ACLs specifically for tmpfs
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filesystems.
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If you've selected TMPFS, it's possible that you'll also need
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this option as there are a number of Linux distros that require
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POSIX ACL support under /dev for certain features to work properly.
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For example, some distros need this feature for ALSA-related /dev
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files for sound to work properly. In short, if you're not sure,
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say Y.
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config TMPFS_XATTR
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bool "Tmpfs extended attributes"
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depends on TMPFS
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default n
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help
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Extended attributes are name:value pairs associated with inodes by
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the kernel or by users (see the attr(5) manual page for details).
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Currently this enables support for the trusted.* and
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security.* namespaces.
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You need this for POSIX ACL support on tmpfs.
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If unsure, say N.
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config TMPFS_INODE64
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bool "Use 64-bit ino_t by default in tmpfs"
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depends on TMPFS && 64BIT
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default n
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help
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tmpfs has historically used only inode numbers as wide as an unsigned
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int. In some cases this can cause wraparound, potentially resulting
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in multiple files with the same inode number on a single device. This
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option makes tmpfs use the full width of ino_t by default, without
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needing to specify the inode64 option when mounting.
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But if a long-lived tmpfs is to be accessed by 32-bit applications so
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ancient that opening a file larger than 2GiB fails with EINVAL, then
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the INODE64 config option and inode64 mount option risk operations
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failing with EOVERFLOW once 33-bit inode numbers are reached.
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To override this configured default, use the inode32 or inode64
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option when mounting.
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If unsure, say N.
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config ARCH_SUPPORTS_HUGETLBFS
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def_bool n
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config HUGETLBFS
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bool "HugeTLB file system support"
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depends on X86 || IA64 || SPARC64 || ARCH_SUPPORTS_HUGETLBFS || BROKEN
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depends on (SYSFS || SYSCTL)
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select MEMFD_CREATE
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help
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hugetlbfs is a filesystem backing for HugeTLB pages, based on
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ramfs. For architectures that support it, say Y here and read
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<file:Documentation/admin-guide/mm/hugetlbpage.rst> for details.
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If unsure, say N.
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config HUGETLB_PAGE
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def_bool HUGETLBFS
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config HUGETLB_PAGE_OPTIMIZE_VMEMMAP
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def_bool HUGETLB_PAGE
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depends on ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP
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depends on SPARSEMEM_VMEMMAP
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config HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON
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bool "HugeTLB Vmemmap Optimization (HVO) defaults to on"
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default n
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depends on HUGETLB_PAGE_OPTIMIZE_VMEMMAP
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help
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The HugeTLB VmemmapvOptimization (HVO) defaults to off. Say Y here to
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enable HVO by default. It can be disabled via hugetlb_free_vmemmap=off
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(boot command line) or hugetlb_optimize_vmemmap (sysctl).
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config ARCH_HAS_GIGANTIC_PAGE
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bool
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source "fs/configfs/Kconfig"
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source "fs/efivarfs/Kconfig"
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endmenu
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menuconfig MISC_FILESYSTEMS
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bool "Miscellaneous filesystems"
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default y
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help
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Say Y here to get to see options for various miscellaneous
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filesystems, such as filesystems that came from other
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operating systems.
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This option alone does not add any kernel code.
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If you say N, all options in this submenu will be skipped and
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disabled; if unsure, say Y here.
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if MISC_FILESYSTEMS
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source "fs/orangefs/Kconfig"
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source "fs/adfs/Kconfig"
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source "fs/affs/Kconfig"
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source "fs/ecryptfs/Kconfig"
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source "fs/hfs/Kconfig"
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source "fs/hfsplus/Kconfig"
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source "fs/befs/Kconfig"
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source "fs/bfs/Kconfig"
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source "fs/efs/Kconfig"
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source "fs/jffs2/Kconfig"
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# UBIFS File system configuration
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source "fs/ubifs/Kconfig"
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source "fs/cramfs/Kconfig"
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source "fs/squashfs/Kconfig"
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source "fs/freevxfs/Kconfig"
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source "fs/minix/Kconfig"
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source "fs/omfs/Kconfig"
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source "fs/hpfs/Kconfig"
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source "fs/qnx4/Kconfig"
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source "fs/qnx6/Kconfig"
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source "fs/romfs/Kconfig"
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source "fs/pstore/Kconfig"
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source "fs/sysv/Kconfig"
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source "fs/ufs/Kconfig"
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source "fs/erofs/Kconfig"
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source "fs/vboxsf/Kconfig"
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endif # MISC_FILESYSTEMS
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menuconfig NETWORK_FILESYSTEMS
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bool "Network File Systems"
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default y
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depends on NET
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help
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Say Y here to get to see options for network filesystems and
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filesystem-related networking code, such as NFS daemon and
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RPCSEC security modules.
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This option alone does not add any kernel code.
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If you say N, all options in this submenu will be skipped and
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disabled; if unsure, say Y here.
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if NETWORK_FILESYSTEMS
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source "fs/nfs/Kconfig"
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source "fs/nfsd/Kconfig"
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config GRACE_PERIOD
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tristate
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config LOCKD
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tristate
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depends on FILE_LOCKING
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select GRACE_PERIOD
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config LOCKD_V4
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bool
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depends on NFSD || NFS_V3
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depends on FILE_LOCKING
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default y
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config NFS_ACL_SUPPORT
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tristate
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select FS_POSIX_ACL
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config NFS_COMMON
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bool
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depends on NFSD || NFS_FS || LOCKD
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default y
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config NFS_V4_2_SSC_HELPER
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bool
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default y if NFS_V4_2
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source "net/sunrpc/Kconfig"
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source "fs/ceph/Kconfig"
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source "fs/smb/Kconfig"
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source "fs/coda/Kconfig"
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source "fs/afs/Kconfig"
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source "fs/9p/Kconfig"
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endif # NETWORK_FILESYSTEMS
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source "fs/nls/Kconfig"
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source "fs/dlm/Kconfig"
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source "fs/unicode/Kconfig"
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config IO_WQ
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bool
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endmenu
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