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| author |   Miaohe Lin <linmiaohe@huawei.com> | 2020-10-13 16:54:14 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-13 18:38:32 -0700 |
| commit | cb48841fbf4ed6f5e001a79af4c2486028dfb291 (patch) | |
| tree | cb71ae1bbb528ecbf098e65aea4094b6123e3eab | |
| parent | mm: use helper function mapping_allow_writable() (diff) | |
| download | linux-dev-cb48841fbf4ed6f5e001a79af4c2486028dfb291.tar.xz linux-dev-cb48841fbf4ed6f5e001a79af4c2486028dfb291.zip | |
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.
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/20200921115814.39680-1-linmiaohe@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/mmap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index 7799a3f2e483..cab12a759200 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -143,7 +143,7 @@ static void __remove_shared_vm_struct(struct vm_area_struct *vma, 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); |