dm: mark various branches unlikely

Signed-off-by: Mike Snitzer <snitzer@kernel.org>

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index e6b6fe0..34d457c 100644 (file)
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -991,7 +991,7 @@ 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) {
@@ -1288,7 +1288,7 @@ 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);
@@ -1631,7 +1631,7 @@ 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);