btrfs: remove level argument from btrfs_set_block_flags

We just pass in btrfs_header_level(eb) for the level, and we're passing
in the eb already, so simply get the level from the eb inside of
btrfs_set_block_flags.
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/ctree.c

@@ -464,10 +464,7 @@ static noinline int update_ref_for_cow(struct btrfs_trans_handle *trans,
 				return ret;
 		}
 		if (new_flags != 0) {
-			int level = btrfs_header_level(buf);
-
-			ret = btrfs_set_disk_extent_flags(trans, buf,
-							  new_flags, level);
+			ret = btrfs_set_disk_extent_flags(trans, buf, new_flags);
 			if (ret)
 				return ret;
 		}

fs/btrfs/extent-tree.c

@@ -2152,10 +2152,10 @@ int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
 }
 
 int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans,
-				struct extent_buffer *eb, u64 flags,
-				int level)
+				struct extent_buffer *eb, u64 flags)
 {
 	struct btrfs_delayed_extent_op *extent_op;
+	int level = btrfs_header_level(eb);
 	int ret;
 
 	extent_op = btrfs_alloc_delayed_extent_op();
@@ -5095,8 +5095,7 @@ static noinline int walk_down_proc(struct btrfs_trans_handle *trans,
 		BUG_ON(ret); /* -ENOMEM */
 		ret = btrfs_dec_ref(trans, root, eb, 0);
 		BUG_ON(ret); /* -ENOMEM */
-		ret = btrfs_set_disk_extent_flags(trans, eb, flag,
-						  btrfs_header_level(eb));
+		ret = btrfs_set_disk_extent_flags(trans, eb, flag);
 		BUG_ON(ret); /* -ENOMEM */
 		wc->flags[level] |= flag;
 	}

fs/btrfs/extent-tree.h

@@ -141,7 +141,7 @@ int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
 int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
 		  struct extent_buffer *buf, int full_backref);
 int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans,
-				struct extent_buffer *eb, u64 flags, int level);
+				struct extent_buffer *eb, u64 flags);
 int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_ref *ref);
 
 int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info,