Commit cb48841f authored by Miaohe Lin's avatar Miaohe Lin Committed by Linus Torvalds

mm/mmap.c: use helper function allow_write_access() in __remove_shared_vm_struct()

In commit 1da177e4 ("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: default avatarMiaohe Lin <linmiaohe@huawei.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/20200921115814.39680-1-linmiaohe@huawei.comSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent cf508b58
...@@ -143,7 +143,7 @@ static void __remove_shared_vm_struct(struct vm_area_struct *vma, ...@@ -143,7 +143,7 @@ static void __remove_shared_vm_struct(struct vm_area_struct *vma,
struct file *file, struct address_space *mapping) struct file *file, struct address_space *mapping)
{ {
if (vma->vm_flags & VM_DENYWRITE) if (vma->vm_flags & VM_DENYWRITE)
atomic_inc(&file_inode(file)->i_writecount); allow_write_access(file);
if (vma->vm_flags & VM_SHARED) if (vma->vm_flags & VM_SHARED)
mapping_unmap_writable(mapping); mapping_unmap_writable(mapping);
......
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