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
..
alpha	mm/fault: convert remaining simple cases to lock_mm_and_find_vma()	2023-06-24 14:12:58 -07:00
arc	mm/fault: convert remaining simple cases to lock_mm_and_find_vma()	2023-06-24 14:12:58 -07:00
arm	arm/mm: Convert to using lock_mm_and_find_vma()	2023-06-24 14:12:58 -07:00
arm64	arm64/mm: Convert to using lock_mm_and_find_vma()	2023-06-24 14:12:58 -07:00
csky	mm/fault: convert remaining simple cases to lock_mm_and_find_vma()	2023-06-24 14:12:58 -07:00
hexagon	mm/fault: convert remaining simple cases to lock_mm_and_find_vma()	2023-06-24 14:12:58 -07:00
ia64	mm: always expand the stack with the mmap write lock held	2023-06-27 09:41:30 -07:00
loongarch	mm/fault: convert remaining simple cases to lock_mm_and_find_vma()	2023-06-24 14:12:58 -07:00
m68k	mm: always expand the stack with the mmap write lock held	2023-06-27 09:41:30 -07:00
microblaze	mm: always expand the stack with the mmap write lock held	2023-06-27 09:41:30 -07:00
mips	mips/mm: Convert to using lock_mm_and_find_vma()	2023-06-24 14:12:58 -07:00
nios2	mm/fault: convert remaining simple cases to lock_mm_and_find_vma()	2023-06-24 14:12:58 -07:00
openrisc	mm: always expand the stack with the mmap write lock held	2023-06-27 09:41:30 -07:00
parisc	mm: always expand the stack with the mmap write lock held	2023-06-27 09:41:30 -07:00
powerpc	powerpc/mm: convert coprocessor fault to lock_mm_and_find_vma()	2023-06-24 14:12:58 -07:00
riscv	riscv/mm: Convert to using lock_mm_and_find_vma()	2023-06-24 14:12:58 -07:00
s390	mm: always expand the stack with the mmap write lock held	2023-06-27 09:41:30 -07:00
sh	mm/fault: convert remaining simple cases to lock_mm_and_find_vma()	2023-06-24 14:12:58 -07:00
sparc	mm: always expand the stack with the mmap write lock held	2023-06-27 09:41:30 -07:00
um	mm: always expand the stack with the mmap write lock held	2023-06-27 09:41:30 -07:00
x86	mm: introduce new 'lock_mm_and_find_vma()' page fault helper	2023-06-24 14:12:54 -07:00
xtensa	mm/fault: convert remaining simple cases to lock_mm_and_find_vma()	2023-06-24 14:12:58 -07:00
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