[PATCH 07/45] bcache: use op_is_write instead of checking for REQ_WRITE
From: <hidden>
Date: 2016-06-05 19:32:49
Also in:
dm-devel, linux-bcache, linux-block, linux-btrfs, linux-f2fs-devel, linux-fsdevel, linux-raid, linux-scsi, linux-xfs, lkml, ocfs2-devel
Subsystem:
bcache (block layer cache), the rest · Maintainers:
Coly Li, Kent Overstreet, Linus Torvalds
From: Mike Christie <redacted> 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 <redacted> --- drivers/md/bcache/io.c | 2 +- drivers/md/bcache/request.c | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/md/bcache/io.c b/drivers/md/bcache/io.c
index 86a0bb8..fd885cc 100644
--- a/drivers/md/bcache/io.c
+++ b/drivers/md/bcache/io.c@@ -111,7 +111,7 @@ void bch_bbio_count_io_errors(struct cache_set *c, struct bio *bio, struct bbio *b = container_of(bio, struct bbio, bio); struct cache *ca = PTR_CACHE(c, &b->key, 0); - unsigned threshold = bio->bi_rw & REQ_WRITE + unsigned threshold = op_is_write(bio_op(bio)) ? c->congested_write_threshold_us : c->congested_read_threshold_us;
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 25fa844..6b85a23 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;
--
2.7.2
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