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authorMiaohe Lin <linmiaohe@huawei.com>2020-10-15 20:10:08 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-10-16 11:11:19 -0700
commit73eb7f9a4ff034d20c8f9454a5a6f45a60cf8dfc (patch)
tree5ae619c217e9dcfd5e14fafdc05388921b23f70a /mm/mmap.c
parente755f4af08b74e5bee4f7a1fc2c3a05188774608 (diff)
mm: use helper function put_write_access()
In commit 1da177e4c3f4 ("Linux-2.6.12-rc2"), the helper put_write_access() came with the atomic_dec operation of the i_writecount field. But it forgot to use this helper in __vma_link_file() and dup_mmap(). Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: https://lkml.kernel.org/r/20200924115235.5111-1-linmiaohe@huawei.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mmap.c')
-rw-r--r--mm/mmap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/mmap.c b/mm/mmap.c
index 67d11ad6df24..9fb9f8a233c7 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -619,7 +619,7 @@ static void __vma_link_file(struct vm_area_struct *vma)
struct address_space *mapping = file->f_mapping;
if (vma->vm_flags & VM_DENYWRITE)
- atomic_dec(&file_inode(file)->i_writecount);
+ put_write_access(file_inode(file));
if (vma->vm_flags & VM_SHARED)
mapping_allow_writable(mapping);