btrfs: rename err to ret in btrfs_lock_extent_bits()

Unify naming of return value to the preferred way.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/extent-io-tree.c b/fs/btrfs/extent-io-tree.c
index 0f4c0b234573211d02e84c838b3dcd164a452551..84da01996336c1eb53e947c728848053f78aa97b 100644 (file)
--- a/fs/btrfs/extent-io-tree.c
+++ b/fs/btrfs/extent-io-tree.c
@@ -1903,21 +1903,21 @@ int btrfs_lock_extent_bits(struct extent_io_tree *tree, u64 start, u64 end, u32
                           struct extent_state **cached_state)
 {
        struct extent_state *failed_state = NULL;
-       int err;
+       int ret;
        u64 failed_start;
 
-       err = set_extent_bit(tree, start, end, bits, &failed_start,
+       ret = set_extent_bit(tree, start, end, bits, &failed_start,
                             &failed_state, cached_state, NULL);
-       while (err == -EEXIST) {
+       while (ret == -EEXIST) {
                if (failed_start != start)
                        btrfs_clear_extent_bit(tree, start, failed_start - 1,
                                               bits, cached_state);
 
                wait_extent_bit(tree, failed_start, end, bits, &failed_state);
-               err = set_extent_bit(tree, start, end, bits, &failed_start,
+               ret = set_extent_bit(tree, start, end, bits, &failed_start,
                                     &failed_state, cached_state, NULL);
        }
-       return err;
+       return ret;
 }
 
 /*