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block: convert to bio_first_bvec_all & bio_first_page_all

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This patch converts to bio_first_bvec_all() & bio_first_page_all() for
retrieving the 1st bvec/page, and prepares for supporting multipage bvec.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ming Lei
2017-12-18 20:22:04 +08:00
committed by Jens Axboe
parent 86292abc5a
commit 263663cd3c
8 changed files with 13 additions and 13 deletions
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8
drivers/md/bcache/super.c
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@@ -211,7 +211,7 @@ static void write_bdev_super_endio(struct bio *bio)
static void __write_super(struct cache_sb *sb, struct bio *bio)
{
struct cache_sb *out = page_address(bio->bi_io_vec[0].bv_page);
struct cache_sb *out = page_address(bio_first_page_all(bio));
unsigned i;
bio->bi_iter.bi_sector = SB_SECTOR;
@@ -1166,7 +1166,7 @@ static void register_bdev(struct cache_sb *sb, struct page *sb_page,
dc->bdev->bd_holder = dc;
bio_init(&dc->sb_bio, dc->sb_bio.bi_inline_vecs, 1);
dc->sb_bio.bi_io_vec[0].bv_page = sb_page;
bio_first_bvec_all(&dc->sb_bio)->bv_page = sb_page;
get_page(sb_page);
if (cached_dev_init(dc, sb->block_size << 9))
@@ -1810,7 +1810,7 @@ void bch_cache_release(struct kobject *kobj)
free_fifo(&ca->free[i]);
if (ca->sb_bio.bi_inline_vecs[0].bv_page)
put_page(ca->sb_bio.bi_io_vec[0].bv_page);
put_page(bio_first_page_all(&ca->sb_bio));
if (!IS_ERR_OR_NULL(ca->bdev))
blkdev_put(ca->bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
@@ -1864,7 +1864,7 @@ static int register_cache(struct cache_sb *sb, struct page *sb_page,
ca->bdev->bd_holder = ca;
bio_init(&ca->sb_bio, ca->sb_bio.bi_inline_vecs, 1);
ca->sb_bio.bi_io_vec[0].bv_page = sb_page;
bio_first_bvec_all(&ca->sb_bio)->bv_page = sb_page;
get_page(sb_page);
if (blk_queue_discard(bdev_get_queue(ca->bdev)))