bcachefs: bucket_pos_to_bp_end()

Better helpers for iterating over backpointers within a specific bucket

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 10 insertions, 0 deletions

diff --git a/fs/bcachefs/backpointers.h b/fs/bcachefs/backpointers.h
index eda3a78a5e2b..595db7960939 100644
--- a/fs/bcachefs/backpointers.h
+++ b/fs/bcachefs/backpointers.h
@@ -80,6 +80,16 @@ static inline struct bpos bucket_pos_to_bp(const struct bch_dev *ca,
 	return ret;
 }
 
+static inline struct bpos bucket_pos_to_bp_start(const struct bch_dev *ca, struct bpos bucket)
+{
+	return bucket_pos_to_bp(ca, bucket, 0);
+}
+
+static inline struct bpos bucket_pos_to_bp_end(const struct bch_dev *ca, struct bpos bucket)
+{
+	return bpos_nosnap_predecessor(bucket_pos_to_bp(ca, bpos_nosnap_successor(bucket), 0));
+}
+
 int bch2_bucket_backpointer_mod_nowritebuffer(struct btree_trans *, struct bch_dev *,
 				struct bpos bucket, struct bch_backpointer, struct bkey_s_c, bool);