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: 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.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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