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| author | Mike Christie <mchristi@redhat.com> | 2016-06-05 14:31:47 -0500 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-06-07 13:41:38 -0600 |
| commit | c8d93247f1d0cf478222a7f4fc37d453d6193d04 (patch) | |
| tree | c39ae14478ad516b0a01a975181833f30a483f63 /drivers/md/bcache/request.c | |
| parent | 511116669346a0029b7e54eaaa8e5a7029f89ab3 (diff) | |
| download | lwn-c8d93247f1d0cf478222a7f4fc37d453d6193d04.tar.gz lwn-c8d93247f1d0cf478222a7f4fc37d453d6193d04.zip | |
bcache: use op_is_write instead of checking for REQ_WRITE
We currently set REQ_WRITE/WRITE for all non READ IOs
like discard, flush, writesame, etc. In the next patches where we
no longer set up the op as a bitmap, we will not be able to
detect a operation direction like writesame by testing if REQ_WRITE is
set.
This has bcache use the op_is_write helper which will do the right
thing.
Signed-off-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/md/bcache/request.c')
| -rw-r--r-- | drivers/md/bcache/request.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c index 25fa8445bb24..6b85a23ec92a 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -383,7 +383,7 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio) if (mode == CACHE_MODE_NONE || (mode == CACHE_MODE_WRITEAROUND && - (bio->bi_rw & REQ_WRITE))) + op_is_write(bio_op(bio)))) goto skip; if (bio->bi_iter.bi_sector & (c->sb.block_size - 1) || @@ -404,7 +404,7 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio) if (!congested && mode == CACHE_MODE_WRITEBACK && - (bio->bi_rw & REQ_WRITE) && + op_is_write(bio_op(bio)) && (bio->bi_rw & REQ_SYNC)) goto rescale; @@ -657,7 +657,7 @@ static inline struct search *search_alloc(struct bio *bio, s->cache_miss = NULL; s->d = d; s->recoverable = 1; - s->write = (bio->bi_rw & REQ_WRITE) != 0; + s->write = op_is_write(bio_op(bio)); s->read_dirty_data = 0; s->start_time = jiffies; |