btrfs: rename err to ret in btrfs_try_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 b1b96eb5f64e2816652bee47ae543997a3944b17..0f4c0b234573211d02e84c838b3dcd164a452551 100644 (file)
--- a/fs/btrfs/extent-io-tree.c
+++ b/fs/btrfs/extent-io-tree.c
@@ -1882,12 +1882,11 @@ int btrfs_clear_record_extent_bits(struct extent_io_tree *tree, u64 start, u64 e
 bool btrfs_try_lock_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
                                u32 bits, struct extent_state **cached)
 {
-       int err;
+       int ret;
        u64 failed_start;
 
-       err = set_extent_bit(tree, start, end, bits, &failed_start, NULL,
-                            cached, NULL);
-       if (err == -EEXIST) {
+       ret = set_extent_bit(tree, start, end, bits, &failed_start, NULL, cached, NULL);
+       if (ret == -EEXIST) {
                if (failed_start > start)
                        btrfs_clear_extent_bit(tree, start, failed_start - 1,
                                               bits, cached);