linux/arch/m68k
Linus Torvalds 8d7071af89 mm: always expand the stack with the mmap write lock held
This finishes the job of always holding the mmap write lock when
extending the user stack vma, and removes the 'write_locked' argument
from the vm helper functions again.

For some cases, we just avoid expanding the stack at all: drivers and
page pinning really shouldn't be extending any stacks.  Let's see if any
strange users really wanted that.

It's worth noting that architectures that weren't converted to the new
lock_mm_and_find_vma() helper function are left using the legacy
"expand_stack()" function, but it has been changed to drop the mmap_lock
and take it for writing while expanding the vma.  This makes it fairly
straightforward to convert the remaining architectures.

As a result of dropping and re-taking the lock, the calling conventions
for this function have also changed, since the old vma may no longer be
valid.  So it will now return the new vma if successful, and NULL - and
the lock dropped - if the area could not be extended.

Tested-by: Vegard Nossum <vegard.nossum@oracle.com>
Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> # ia64
Tested-by: Frank Scheiner <frank.scheiner@web.de> # ia64
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2023-06-27 09:41:30 -07:00
..
68000 m68knommu: updates and fixes for v6.3 2023-02-27 09:31:02 -08:00
amiga m68k: Add asm/config.h 2022-02-21 12:00:20 +01:00
apollo m68k: Add asm/config.h 2022-02-21 12:00:20 +01:00
atari for-5.18/block-2022-03-18 2022-03-21 16:48:55 -07:00
bvme6000 for-5.18/block-2022-03-18 2022-03-21 16:48:55 -07:00
coldfire m68k: Check syscall_trace_enter() return code 2023-01-30 16:40:15 +01:00
configs m68k: defconfig: Update defconfigs for v6.3-rc1 2023-04-03 11:00:43 +02:00
emu tty: nfcon: use console_is_registered() 2022-12-02 11:25:01 +01:00
fpsp040 signal/m68k: Use force_sigsegv(SIGSEGV) in fpsp040_die 2021-08-26 09:59:15 -05:00
hp300 m68k: removed unused "mach_get_ss" 2022-05-25 00:04:11 +10:00
ifpsp060 m68k: fpsp040,ifpsp060: Remove meaningless EXTRA_LDFLAGS 2021-04-06 09:33:20 +02:00
include Locking changes in v6.4: 2023-05-05 12:56:55 -07:00
kernel m68k: Move signal frame following exception on 68020/030 2023-05-22 13:51:20 +02:00
lib net: unexport csum_and_copy_{from,to}_user 2022-04-29 14:37:59 -07:00
mac m68k: mac: Reword comment using double "in" 2022-11-01 12:17:56 +01:00
math-emu m68k: math-emu: Fix typos in comments 2022-05-09 13:13:59 +02:00
mm mm: always expand the stack with the mmap write lock held 2023-06-27 09:41:30 -07:00
mvme16x for-5.18/block-2022-03-18 2022-03-21 16:48:55 -07:00
mvme147 for-5.18/block-2022-03-18 2022-03-21 16:48:55 -07:00
q40 m68k: q40: Do not initialise statics to 0 2023-01-30 16:39:43 +01:00
sun3 m68k: sun3: Use __func__ to get function's name in an output message 2022-06-20 14:16:43 +02:00
sun3x m68k: Remove set_fs() 2021-09-24 13:35:07 +02:00
tools/amiga m68k: tools: Replace zero-length array with flexible-array member 2020-05-25 10:55:56 +02:00
virt m68k: Rework BI_VIRT_RNG_SEED as BI_RNG_SEED 2022-09-28 22:16:44 +02:00
install.sh kbuild: factor out the common installation code into scripts/install.sh 2022-05-11 21:45:53 +09:00
Kbuild m68k: Introduce a virtual m68k machine 2022-04-11 11:48:01 +02:00
Kconfig Kconfig: introduce HAS_IOPORT option and select it as necessary 2023-04-05 22:15:19 +02:00
Kconfig.bus m68k: coldfire: drop ISA_DMA_API support 2022-05-16 13:18:30 +10:00
Kconfig.cpu - Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of 2023-04-27 19:42:02 -07:00
Kconfig.debug m68k: Remove obsolete config NO_KERNEL_MSG 2023-03-20 15:39:14 +01:00
Kconfig.devices m68k: /proc/hardware should depend on PROC_FS 2023-02-13 11:34:49 +01:00
Kconfig.machine m68knommu: updates and fixes for v6.4 2023-04-28 16:37:54 -07:00
Makefile kbuild: remove head-y syntax 2022-10-02 18:06:03 +09:00