Use helper function mapping_allow_writable() to atomic_inc i_mmap_writable.
Signed-off-by: Miaohe Lin <[email protected]> --- kernel/fork.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/fork.c b/kernel/fork.c index 4b328aecabb2..a0586716e327 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -558,7 +558,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm, atomic_dec(&inode->i_writecount); i_mmap_lock_write(mapping); if (tmp->vm_flags & VM_SHARED) - atomic_inc(&mapping->i_mmap_writable); + mapping_allow_writable(mapping); flush_dcache_mmap_lock(mapping); /* insert tmp into the share list, just after mpnt */ vma_interval_tree_insert_after(tmp, mpnt, -- 2.19.1
