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| author | Mike Snitzer <snitzer@kernel.org> | 2023-06-13 23:02:17 +0300 |
|---|---|---|
| committer | Mike Snitzer <snitzer@kernel.org> | 2023-06-17 01:24:13 +0300 |
| commit | c4f512d255e3c4ade80a1d68ca816c1b11556a13 (patch) | |
| tree | 88ae8332518d51897b669fe2a4b89c7bba58362f /drivers/md | |
| parent | 06eed768ea64c7a128582efda4f6107cb14ee962 (diff) | |
| download | linux-c4f512d255e3c4ade80a1d68ca816c1b11556a13.tar.xz | |
dm: skip dm-stats work in alloc_io() unless needed
Don't dm_stats_record_start() if dm_stats_used() is false.
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 658323aff676..ea1671c39ba1 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -597,7 +597,8 @@ static struct dm_io *alloc_io(struct mapped_device *md, struct bio *bio) if (blk_queue_io_stat(md->queue)) dm_io_set_flag(io, DM_IO_BLK_STAT); - if (static_branch_unlikely(&stats_enabled)) + if (static_branch_unlikely(&stats_enabled) && + unlikely(dm_stats_used(&md->stats))) dm_stats_record_start(&md->stats, &io->stats_aux); return io; |