diff options
author | Ming Lei <tom.leiming@gmail.com> | 2016-11-22 16:57:21 +0100 |
---|---|---|
committer | Jens Axboe <axboe@fb.com> | 2016-11-22 16:57:21 +0100 |
commit | 3a83f4677539bce8eaa2bca9ee9c20e172d7ab04 (patch) | |
tree | edb5ffeed2c07c342bd6d9adb0180fab472c1666 /drivers/md/bcache | |
parent | block_dev: get rid of blksize bits calculation (diff) | |
download | linux-3a83f4677539bce8eaa2bca9ee9c20e172d7ab04.tar.xz linux-3a83f4677539bce8eaa2bca9ee9c20e172d7ab04.zip |
block: bio: pass bvec table to bio_init()
Some drivers often use external bvec table, so introduce
this helper for this case. It is always safe to access the
bio->bi_io_vec in this way for this case.
After converting to this usage, it will becomes a bit easier
to evaluate the remaining direct access to bio->bi_io_vec,
so it can help to prepare for the following multipage bvec
support.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Fixed up the new O_DIRECT cases.
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/md/bcache')
-rw-r--r-- | drivers/md/bcache/io.c | 4 | ||||
-rw-r--r-- | drivers/md/bcache/journal.c | 4 | ||||
-rw-r--r-- | drivers/md/bcache/movinggc.c | 6 | ||||
-rw-r--r-- | drivers/md/bcache/request.c | 2 | ||||
-rw-r--r-- | drivers/md/bcache/super.c | 12 | ||||
-rw-r--r-- | drivers/md/bcache/writeback.c | 5 |
6 files changed, 10 insertions, 23 deletions
diff --git a/drivers/md/bcache/io.c b/drivers/md/bcache/io.c index e97b0acf7b8d..db45a88c0ce9 100644 --- a/drivers/md/bcache/io.c +++ b/drivers/md/bcache/io.c @@ -24,9 +24,7 @@ struct bio *bch_bbio_alloc(struct cache_set *c) struct bbio *b = mempool_alloc(c->bio_meta, GFP_NOIO); struct bio *bio = &b->bio; - bio_init(bio); - bio->bi_max_vecs = bucket_pages(c); - bio->bi_io_vec = bio->bi_inline_vecs; + bio_init(bio, bio->bi_inline_vecs, bucket_pages(c)); return bio; } diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c index 6925023e12d4..1198e53d5670 100644 --- a/drivers/md/bcache/journal.c +++ b/drivers/md/bcache/journal.c @@ -448,13 +448,11 @@ static void do_journal_discard(struct cache *ca) atomic_set(&ja->discard_in_flight, DISCARD_IN_FLIGHT); - bio_init(bio); + bio_init(bio, bio->bi_inline_vecs, 1); bio_set_op_attrs(bio, REQ_OP_DISCARD, 0); bio->bi_iter.bi_sector = bucket_to_sector(ca->set, ca->sb.d[ja->discard_idx]); bio->bi_bdev = ca->bdev; - bio->bi_max_vecs = 1; - bio->bi_io_vec = bio->bi_inline_vecs; bio->bi_iter.bi_size = bucket_bytes(ca); bio->bi_end_io = journal_discard_endio; diff --git a/drivers/md/bcache/movinggc.c b/drivers/md/bcache/movinggc.c index 5c4bddecfaf0..13b8a907006d 100644 --- a/drivers/md/bcache/movinggc.c +++ b/drivers/md/bcache/movinggc.c @@ -77,15 +77,13 @@ static void moving_init(struct moving_io *io) { struct bio *bio = &io->bio.bio; - bio_init(bio); + bio_init(bio, bio->bi_inline_vecs, + DIV_ROUND_UP(KEY_SIZE(&io->w->key), PAGE_SECTORS)); bio_get(bio); bio_set_prio(bio, IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)); bio->bi_iter.bi_size = KEY_SIZE(&io->w->key) << 9; - bio->bi_max_vecs = DIV_ROUND_UP(KEY_SIZE(&io->w->key), - PAGE_SECTORS); bio->bi_private = &io->cl; - bio->bi_io_vec = bio->bi_inline_vecs; bch_bio_map(bio, NULL); } diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c index 0d99b5f4b3e6..f49c5417527d 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -623,7 +623,7 @@ static void do_bio_hook(struct search *s, struct bio *orig_bio) { struct bio *bio = &s->bio.bio; - bio_init(bio); + bio_init(bio, NULL, 0); __bio_clone_fast(bio, orig_bio); bio->bi_end_io = request_endio; bio->bi_private = &s->cl; diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 988edf928466..2fb5bfeb43e2 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -1152,9 +1152,7 @@ static void register_bdev(struct cache_sb *sb, struct page *sb_page, dc->bdev = bdev; dc->bdev->bd_holder = dc; - bio_init(&dc->sb_bio); - dc->sb_bio.bi_max_vecs = 1; - dc->sb_bio.bi_io_vec = dc->sb_bio.bi_inline_vecs; + bio_init(&dc->sb_bio, dc->sb_bio.bi_inline_vecs, 1); dc->sb_bio.bi_io_vec[0].bv_page = sb_page; get_page(sb_page); @@ -1814,9 +1812,7 @@ static int cache_alloc(struct cache *ca) __module_get(THIS_MODULE); kobject_init(&ca->kobj, &bch_cache_ktype); - bio_init(&ca->journal.bio); - ca->journal.bio.bi_max_vecs = 8; - ca->journal.bio.bi_io_vec = ca->journal.bio.bi_inline_vecs; + bio_init(&ca->journal.bio, ca->journal.bio.bi_inline_vecs, 8); free = roundup_pow_of_two(ca->sb.nbuckets) >> 10; @@ -1852,9 +1848,7 @@ static int register_cache(struct cache_sb *sb, struct page *sb_page, ca->bdev = bdev; ca->bdev->bd_holder = ca; - bio_init(&ca->sb_bio); - ca->sb_bio.bi_max_vecs = 1; - ca->sb_bio.bi_io_vec = ca->sb_bio.bi_inline_vecs; + bio_init(&ca->sb_bio, ca->sb_bio.bi_inline_vecs, 1); ca->sb_bio.bi_io_vec[0].bv_page = sb_page; get_page(sb_page); diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c index e51644e503a5..69e1ae59cab8 100644 --- a/drivers/md/bcache/writeback.c +++ b/drivers/md/bcache/writeback.c @@ -106,14 +106,13 @@ static void dirty_init(struct keybuf_key *w) struct dirty_io *io = w->private; struct bio *bio = &io->bio; - bio_init(bio); + bio_init(bio, bio->bi_inline_vecs, + DIV_ROUND_UP(KEY_SIZE(&w->key), PAGE_SECTORS)); if (!io->dc->writeback_percent) bio_set_prio(bio, IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)); bio->bi_iter.bi_size = KEY_SIZE(&w->key) << 9; - bio->bi_max_vecs = DIV_ROUND_UP(KEY_SIZE(&w->key), PAGE_SECTORS); bio->bi_private = w; - bio->bi_io_vec = bio->bi_inline_vecs; bch_bio_map(bio, NULL); } |