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Commit 38e9372e authored by David Sterba's avatar David Sterba
Browse files

btrfs: assert delayed ref lock in btrfs_find_delayed_ref_head 



Turn the comment about required lock into an assertion.

Reviewed-by: default avatarNikolay Borisov <nborisov@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 93ead46b

fs/btrfs/delayed-ref.c

+4 −3
Original line number Diff line number Diff line
@@ -957,13 +957,14 @@ int btrfs_add_delayed_extent_op(struct btrfs_trans_handle *trans, 
}



/*

 * this does a simple search for the head node for a given extent.

 * It must be called with the delayed ref spinlock held, and it returns

 * the head node if any where found, or NULL if not.

 * This does a simple search for the head node for a given extent.  Returns the

 * head node if found, or NULL if not.

 */

struct btrfs_delayed_ref_head *

btrfs_find_delayed_ref_head(struct btrfs_delayed_ref_root *delayed_refs, u64 bytenr)

{

	lockdep_assert_held(&delayed_refs->lock);



	return find_ref_head(delayed_refs, bytenr, false);

}