From cb48841fbf4ed6f5e001a79af4c2486028dfb291 Mon Sep 17 00:00:00 2001 From: Miaohe Lin Date: Tue, 13 Oct 2020 16:54:14 -0700 Subject: [PATCH] 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 Signed-off-by: Andrew Morton Link: https://lkml.kernel.org/r/20200921115814.39680-1-linmiaohe@huawei.com Signed-off-by: Linus Torvalds --- mm/mmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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);