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
......@@ -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);
}
......
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