+ mm-mmap-use-helper-function-allow_write_access-in-__remove_shared_vm_struct.patch added to -mm tree

+ mm-mmap-use-helper-function-allow_write_access-in-__remove_shared_vm_struct.patch added to -mm tree

[akpm]

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@huawei.com>
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@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 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@huawei.com 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