Linus Torvalds fb32951c89 mm: always expand the stack with the mmap write lock held ... commit 8d7071af89 upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-07-01 13:12:40 +02:00
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boot	kbuild: unify cmd_copy and cmd_shipped	2022-02-14 10:37:32 +09:00
configs	microblaze/PCI: Remove support for Xilinx PCI host bridge	2022-11-25 11:39:23 +01:00
include	mm, arch: add generic implementation of pfn_valid() for FLATMEM	2023-02-09 16:51:41 -08:00
kernel	arch/idle: Change arch_cpu_idle() behavior: always exit with IRQs disabled	2023-01-13 11:48:15 +01:00
lib	microblaze: fix typos in comments	2022-05-02 08:36:10 +02:00
mm	mm: always expand the stack with the mmap write lock held	2023-07-01 13:12:40 +02:00
pci	microblaze/PCI: Moving PCI iounmap and dependent code	2022-11-25 11:39:23 +01:00
Kbuild	kbuild: use more subdir- for visiting subdirectories while cleaning	2021-10-24 13:49:46 +09:00
Kconfig	Kconfig: introduce HAS_IOPORT option and select it as necessary	2023-04-05 22:15:19 +02:00
Kconfig.debug	…
Kconfig.platform	…
Makefile	kbuild: fix "cat: .version: No such file or directory"	2022-11-24 09:26:02 +09:00