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18 Jan 2021 21:06:42 -0800 From: Chaitanya Kulkarni To: linux-block@vger.kernel.org, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com, linux-bcache@vger.kernel.org, linux-raid@vger.kernel.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, cluster-devel@redhat.com Cc: jfs-discussion@lists.sourceforge.net, dm-devel@redhat.com, axboe@kernel.dk, philipp.reisner@linbit.com, lars.ellenberg@linbit.com, efremov@linux.com, colyli@suse.de, kent.overstreet@gmail.com, agk@redhat.com, snitzer@redhat.com, song@kernel.org, hch@lst.de, sagi@grimberg.me, martin.petersen@oracle.com, viro@zeniv.linux.org.uk, clm@fb.com, josef@toxicpanda.com, dsterba@suse.com, tytso@mit.edu, adilger.kernel@dilger.ca, rpeterso@redhat.com, agruenba@redhat.com, darrick.wong@oracle.com, shaggy@kernel.org, damien.lemoal@wdc.com, naohiro.aota@wdc.com, jth@kernel.org, tj@kernel.org, osandov@fb.com, bvanassche@acm.org, gustavo@embeddedor.com, asml.silence@gmail.com, jefflexu@linux.alibaba.com, Chaitanya Kulkarni Subject: [RFC PATCH 01/37] block: introduce bio_init_fields() helper Date: Mon, 18 Jan 2021 21:05:55 -0800 Message-Id: <20210119050631.57073-2-chaitanya.kulkarni@wdc.com> X-Mailer: git-send-email 2.22.1 In-Reply-To: <20210119050631.57073-1-chaitanya.kulkarni@wdc.com> References: <20210119050631.57073-1-chaitanya.kulkarni@wdc.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: target-devel@vger.kernel.org There are several places in the file-system, block layer, device drivers where struct bio members such as bdev, sector, private, end io callback, io priority, write hints are initialized where we can use a helper function. This pach introduces a helper function which we use in the block lyaer code. Subsequent patches use this function to reduce repeated code. Signed-off-by: Chaitanya Kulkarni --- block/blk-lib.c | 13 +++++-------- include/linux/bio.h | 13 +++++++++++++ 2 files changed, 18 insertions(+), 8 deletions(-) diff --git a/block/blk-lib.c b/block/blk-lib.c index 752f9c722062..5ee488c1bcc6 100644 --- a/block/blk-lib.c +++ b/block/blk-lib.c @@ -95,8 +95,7 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector, WARN_ON_ONCE((req_sects << 9) > UINT_MAX); bio = blk_next_bio(bio, 0, gfp_mask); - bio->bi_iter.bi_sector = sector; - bio_set_dev(bio, bdev); + bio_init_fields(bio, bdev, sector, NULL, NULL, 0, 0); bio_set_op_attrs(bio, op, 0); bio->bi_iter.bi_size = req_sects << 9; @@ -189,8 +188,7 @@ static int __blkdev_issue_write_same(struct block_device *bdev, sector_t sector, while (nr_sects) { bio = blk_next_bio(bio, 1, gfp_mask); - bio->bi_iter.bi_sector = sector; - bio_set_dev(bio, bdev); + bio_init_fields(bio, bdev, sector, NULL, NULL, 0, 0); bio->bi_vcnt = 1; bio->bi_io_vec->bv_page = page; bio->bi_io_vec->bv_offset = 0; @@ -265,8 +263,7 @@ static int __blkdev_issue_write_zeroes(struct block_device *bdev, while (nr_sects) { bio = blk_next_bio(bio, 0, gfp_mask); - bio->bi_iter.bi_sector = sector; - bio_set_dev(bio, bdev); + bio_init_fields(bio, bdev, sector, NULL, NULL, 0, 0); bio->bi_opf = REQ_OP_WRITE_ZEROES; if (flags & BLKDEV_ZERO_NOUNMAP) bio->bi_opf |= REQ_NOUNMAP; @@ -317,8 +314,8 @@ static int __blkdev_issue_zero_pages(struct block_device *bdev, while (nr_sects != 0) { bio = blk_next_bio(bio, __blkdev_sectors_to_bio_pages(nr_sects), gfp_mask); - bio->bi_iter.bi_sector = sector; - bio_set_dev(bio, bdev); + bio_init_fields(bio, bdev, sector, NULL, NULL, 0, 0); + bio_set_op_attrs(bio, REQ_OP_WRITE, 0); while (nr_sects != 0) { diff --git a/include/linux/bio.h b/include/linux/bio.h index 1edda614f7ce..fbeaa5e42a5d 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -820,4 +820,17 @@ static inline void bio_set_polled(struct bio *bio, struct kiocb *kiocb) bio->bi_opf |= REQ_NOWAIT; } +static inline void bio_init_fields(struct bio *bio, struct block_device *bdev, + sector_t sect, void *priv, + bio_end_io_t *end_io, + unsigned short prio, unsigned short whint) +{ + bio_set_dev(bio, bdev); + bio->bi_iter.bi_sector = sect; + bio->bi_private = priv; + bio->bi_end_io = end_io; + bio->bi_ioprio = prio; + bio->bi_write_hint = whint; +} + #endif /* __LINUX_BIO_H */