mm: use new helper functions around the i_mmap_mutex

[firefly-linux-kernel-4.4.55.git] / fs / hugetlbfs / inode.c

diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 1e2872b25343f106df7a96d0b667e194dd070c54..a082709aa42748869fe08fafb43f319f081537fe 100644 (file)
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -412,10 +412,10 @@ static int hugetlb_vmtruncate(struct inode *inode, loff_t offset)
        pgoff = offset >> PAGE_SHIFT;
 
        i_size_write(inode, offset);
-       mutex_lock(&mapping->i_mmap_mutex);
+       i_mmap_lock_write(mapping);
        if (!RB_EMPTY_ROOT(&mapping->i_mmap))
                hugetlb_vmtruncate_list(&mapping->i_mmap, pgoff);
-       mutex_unlock(&mapping->i_mmap_mutex);
+       i_mmap_unlock_write(mapping);
        truncate_hugepages(inode, offset);
        return 0;
 }