btrfs: assert delayed ref lock in btrfs_find_delayed_ref_head
Turn the comment about required lock into an assertion. Reviewed-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
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@ -957,13 +957,14 @@ int btrfs_add_delayed_extent_op(struct btrfs_trans_handle *trans,
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}
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}
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/*
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/*
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* this does a simple search for the head node for a given extent.
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* This does a simple search for the head node for a given extent. Returns the
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* It must be called with the delayed ref spinlock held, and it returns
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* head node if found, or NULL if not.
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* the head node if any where found, or NULL if not.
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*/
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*/
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struct btrfs_delayed_ref_head *
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struct btrfs_delayed_ref_head *
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btrfs_find_delayed_ref_head(struct btrfs_delayed_ref_root *delayed_refs, u64 bytenr)
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btrfs_find_delayed_ref_head(struct btrfs_delayed_ref_root *delayed_refs, u64 bytenr)
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{
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{
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lockdep_assert_held(&delayed_refs->lock);
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return find_ref_head(delayed_refs, bytenr, false);
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return find_ref_head(delayed_refs, bytenr, false);
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}
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}
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