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dm: dont rewrite dm_disk(md)->part0.in_flight

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generic_start_io_acct and generic_end_io_acct already update the variable
in_flight using atomic operations, so we don't have to overwrite them
again.

Signed-off-by: Mikulas Patocka <[email protected]>
Signed-off-by: Mike Snitzer <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Mikulas Patocka 2018-12-06 11:41:16 -05:00 • committed by Jens Axboe
commit 80a787ba38
1 changed files with 1 additions and 3 deletions
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4
drivers/md/dm.c
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@ -663,8 +663,7 @@ static void start_io_acct(struct dm_io *io)
generic_start_io_acct(md->queue, bio_op(bio), bio_sectors(bio),
&dm_disk(md)->part0);
atomic_set(&dm_disk(md)->part0.in_flight[rw],
atomic_inc_return(&md->pending[rw]));
atomic_inc(&md->pending[rw]);
if (unlikely(dm_stats_used(&md->stats)))
dm_stats_account_io(&md->stats, bio_data_dir(bio),
@ -693,7 +692,6 @@ static void end_io_acct(struct dm_io *io)
* a flush.
*/
pending = atomic_dec_return(&md->pending[rw]);
atomic_set(&dm_disk(md)->part0.in_flight[rw], pending);
pending += atomic_read(&md->pending[rw^0x1]);
/* nudge anyone waiting on suspend queue */