[v5,02/11] block: introduce bio zone helpers

Commit Message

Damien Le Moal May 25, 2021, 9:24 p.m. UTC

Introduce the helper functions bio_zone_no() and bio_zone_is_seq().
Both are the BIO counterparts of the request helpers blk_rq_zone_no()
and blk_rq_zone_is_seq(), respectively returning the number of the
target zone of a bio and true if the BIO target zone is sequential.

Signed-off-by: Damien Le Moal <[e-mail]>
Reviewed-by: Hannes Reinecke <[e-mail]>
Reviewed-by: Chaitanya Kulkarni <[e-mail]>
Reviewed-by: Christoph Hellwig <[e-mail]>
Reviewed-by: Himanshu Madhani <[e-mail]>
---
 include/linux/blkdev.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

Patch

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index f69c75bd6d27..2db0f376f5d9 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1008,6 +1008,18 @@  static inline unsigned int blk_rq_stats_sectors(const struct request *rq)
 /* Helper to convert BLK_ZONE_ZONE_XXX to its string format XXX */
 const char *blk_zone_cond_str(enum blk_zone_cond zone_cond);
 
+static inline unsigned int bio_zone_no(struct bio *bio)
+{
+	return blk_queue_zone_no(bdev_get_queue(bio->bi_bdev),
+				 bio->bi_iter.bi_sector);
+}
+
+static inline unsigned int bio_zone_is_seq(struct bio *bio)
+{
+	return blk_queue_zone_is_seq(bdev_get_queue(bio->bi_bdev),
+				     bio->bi_iter.bi_sector);
+}
+
 static inline unsigned int blk_rq_zone_no(struct request *rq)
 {
 	return blk_queue_zone_no(rq->q, blk_rq_pos(rq));