The patch titled
Subject: mm/mmap.c: use helper function allow_write_access() in __remove_shared_vm_struct()
has been added to the -mm tree. Its filename is
mm-mmap-use-helper-function-allow_write_access-in-__remove_shared_vm_struct.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-mmap-use-helper-function-allow_write_access-in-__remove_shared_vm_struct.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-mmap-use-helper-function-allow_write_access-in-__remove_shared_vm_struct.patch
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------------------------------------------------------
From: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Subject: mm/mmap.c: use helper function allow_write_access() in __remove_shared_vm_struct()
In commit 1da177e4c3f4 ("Linux-2.6.12-rc2"), the helper allow_write_access
came with the atomic_inc operation of the i_writecount field in the func
__remove_shared_vm_struct(). But it forgot to use this helper function.
Link: https://lkml.kernel.org/r/20200921115814.39680-1-linmiaohe@xxxxxxxxxx
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/mmap.c~mm-mmap-use-helper-function-allow_write_access-in-__remove_shared_vm_struct
+++ a/mm/mmap.c
@@ -143,7 +143,7 @@ static void __remove_shared_vm_struct(st
struct file *file, struct address_space *mapping)
{
if (vma->vm_flags & VM_DENYWRITE)
- atomic_inc(&file_inode(file)->i_writecount);
+ allow_write_access(file);
if (vma->vm_flags & VM_SHARED)
mapping_unmap_writable(mapping);
_
Patches currently in -mm which might be from linmiaohe@xxxxxxxxxx are
mm-swap-fix-confusing-comment-in-release_pages.patch
mm-memcontrol-correct-the-comment-of-mem_cgroup_iter.patch
mm-page_counter-correct-the-obsolete-func-name-in-the-comment-of-page_counter_try_charge.patch
mm-memcontrol-remove-obsolete-comment-of-mem_cgroup_unmark_under_oom.patch
mm-use-helper-function-mapping_allow_writable.patch
mm-mmap-use-helper-function-allow_write_access-in-__remove_shared_vm_struct.patch
mm-vmstat-use-helper-macro-abs.patch
mm-fix-some-broken-comments.patch
mm-migrate-avoid-possible-unnecessary-process-right-check-in-kernel_move_pages.patch
