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| author | Christoph Hellwig <hch@lst.de> | 2017-01-27 08:30:47 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-01-27 09:01:45 -0700 |
| commit | f73f44eb00cb136990cfb7d40e436c13d7669ec8 (patch) | |
| tree | e0a5cc16d9373eec0346538fe073f0c0b08133bf /drivers/md/dm-cache-target.c | |
| parent | c13660a08c8b3bb49def4374bfd414aaaa564662 (diff) | |
| download | linux-f73f44eb00cb136990cfb7d40e436c13d7669ec8.tar.gz linux-f73f44eb00cb136990cfb7d40e436c13d7669ec8.tar.bz2 linux-f73f44eb00cb136990cfb7d40e436c13d7669ec8.zip | |
block: add a op_is_flush helper
This centralizes the checks for bios that needs to be go into the flush
state machine.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/md/dm-cache-target.c')
| -rw-r--r-- | drivers/md/dm-cache-target.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index e04c61e0839e..5b9cf56de8ef 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -787,8 +787,7 @@ static void check_if_tick_bio_needed(struct cache *cache, struct bio *bio) struct per_bio_data *pb = get_per_bio_data(bio, pb_data_size); spin_lock_irqsave(&cache->lock, flags); - if (cache->need_tick_bio && - !(bio->bi_opf & (REQ_FUA | REQ_PREFLUSH)) && + if (cache->need_tick_bio && !op_is_flush(bio->bi_opf) && bio_op(bio) != REQ_OP_DISCARD) { pb->tick = true; cache->need_tick_bio = false; @@ -828,11 +827,6 @@ static dm_oblock_t get_bio_block(struct cache *cache, struct bio *bio) return to_oblock(block_nr); } -static int bio_triggers_commit(struct cache *cache, struct bio *bio) -{ - return bio->bi_opf & (REQ_PREFLUSH | REQ_FUA); -} - /* * You must increment the deferred set whilst the prison cell is held. To * encourage this, we ask for 'cell' to be passed in. @@ -884,7 +878,7 @@ static void issue(struct cache *cache, struct bio *bio) { unsigned long flags; - if (!bio_triggers_commit(cache, bio)) { + if (!op_is_flush(bio->bi_opf)) { accounted_request(cache, bio); return; } @@ -1069,8 +1063,7 @@ static void dec_io_migrations(struct cache *cache) static bool discard_or_flush(struct bio *bio) { - return bio_op(bio) == REQ_OP_DISCARD || - bio->bi_opf & (REQ_PREFLUSH | REQ_FUA); + return bio_op(bio) == REQ_OP_DISCARD || op_is_flush(bio->bi_opf); } static void __cell_defer(struct cache *cache, struct dm_bio_prison_cell *cell) |