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From: Mike Snitzer <snitzer@kernel.org>
To: dm-devel@redhat.com
Cc: axboe@kernel.dk, hch@lst.de, ming.lei@redhat.com
Subject: [dm-devel] [dm-5.19 PATCH 06/21] dm: mark various branches unlikely
Date: Sun, 17 Apr 2022 22:27:18 -0400	[thread overview]
Message-ID: <20220418022733.56168-7-snitzer@kernel.org> (raw)
In-Reply-To: <20220418022733.56168-1-snitzer@kernel.org>

Signed-off-by: Mike Snitzer <snitzer@kernel.org>
---
 drivers/md/dm.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 0974498c68e7..630c1880023a 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -992,7 +992,7 @@ static void clone_endio(struct bio *bio)
 			disable_write_zeroes(md);
 	}
 
-	if (blk_queue_is_zoned(q))
+	if (unlikely(blk_queue_is_zoned(q)))
 		dm_zone_endio(io, bio);
 
 	if (endio) {
@@ -1289,7 +1289,7 @@ static void __map_bio(struct bio *clone)
 	 * on zoned target. In this case, dm_zone_map_bio() calls the target
 	 * map operation.
 	 */
-	if (dm_emulate_zone_append(io->md))
+	if (unlikely(dm_emulate_zone_append(io->md)))
 		r = dm_zone_map_bio(tio);
 	else
 		r = ti->type->map(ti, clone);
@@ -1632,7 +1632,7 @@ static void dm_submit_bio(struct bio *bio)
 	 * Use blk_queue_split() for abnormal IO (e.g. discard, writesame, etc)
 	 * otherwise associated queue_limits won't be imposed.
 	 */
-	if (is_abnormal_io(bio))
+	if (unlikely(is_abnormal_io(bio)))
 		blk_queue_split(&bio);
 
 	dm_split_and_process_bio(md, map, bio);
-- 
2.15.0

--
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  parent reply	other threads:[~2022-04-18  2:27 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-18  2:27 [dm-devel] [dm-5.19 PATCH 00/21] dm: changes staged for 5.19 Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 01/21] block: change exported IO accounting interface from gendisk to bdev Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 02/21] dm: conditionally enable BIOSET_PERCPU_CACHE for dm_io bioset Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 03/21] dm: factor out dm_io_set_error and __dm_io_dec_pending Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 04/21] dm: simplify dm_io access in dm_split_and_process_bio Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 05/21] dm: simplify dm_start_io_acct Mike Snitzer
2022-04-18  2:27 ` Mike Snitzer [this message]
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 07/21] dm: add local variables to clone_endio and __map_bio Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 08/21] dm: move hot dm_io members to same cacheline as dm_target_io Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 09/21] dm: introduce dm_{get, put}_live_table_bio called from dm_submit_bio Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 10/21] dm: conditionally enable branching for less used features Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 11/21] dm: simplify basic targets Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 12/21] dm: use bio_sectors in dm_aceept_partial_bio Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 13/21] dm: don't pass bio to __dm_start_io_acct and dm_end_io_acct Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 14/21] dm: pass dm_io instance to dm_io_acct directly Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 15/21] dm: switch to bdev based IO accounting interfaces Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 16/21] dm: improve bio splitting and associated IO accounting Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 17/21] dm: don't grab target io reference in dm_zone_map_bio Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 18/21] dm: improve dm_io reference counting Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 19/21] dm: put all polled dm_io instances into a single list Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 20/21] dm: simplify bio-based IO accounting further Mike Snitzer
2022-04-18  2:27 ` [dm-devel] [dm-5.19 PATCH 21/21] dm: improve abnormal bio processing Mike Snitzer
2022-04-21  4:06   ` Shinichiro Kawasaki
2022-04-22 13:13     ` Mike Snitzer
2022-04-22 13:26       ` Mike Snitzer
2022-04-25 23:57         ` Shinichiro Kawasaki
2022-04-18  3:00 ` [dm-devel] [dm-5.19 PATCH 00/21] dm: changes staged for 5.19 Damien Le Moal
2022-04-18  3:16   ` Mike Snitzer
2022-04-18 12:49     ` Jens Axboe
2022-04-18 12:51 ` [dm-devel] (subset) " Jens Axboe

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