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| author | Bart Van Assche <bvanassche@acm.org> | 2022-07-14 11:06:49 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-07-14 12:14:31 -0600 |
| commit | a3282b432f64e9b88632bd380c90157673dce75b (patch) | |
| tree | 65d7e9be048c4fb72dd5b68d537c1c4acf8e2a0c /drivers/md/dm-bufio.c | |
| parent | 71f7113d20ae1083e66ce3301f387362184cdd96 (diff) | |
| download | lwn-a3282b432f64e9b88632bd380c90157673dce75b.tar.gz lwn-a3282b432f64e9b88632bd380c90157673dce75b.zip | |
dm/core: Combine request operation type and flags
Improve kernel code uniformity by combining the request operation type and
flags into a single variable. Change 'int rw' into 'enum req_op op' because
the name 'op' is what is used in the block layer to hold a request type.
Use the blk_opf_t and enum req_op types where appropriate to improve static
type checking.
Cc: Alasdair Kergon <agk@redhat.com>
Cc: Mike Snitzer <snitzer@kernel.org>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20220714180729.1065367-24-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/dm-bufio.c')
| -rw-r--r-- | drivers/md/dm-bufio.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c index 1b7acda45c78..dc01ce33265b 100644 --- a/drivers/md/dm-bufio.c +++ b/drivers/md/dm-bufio.c @@ -577,12 +577,12 @@ static void dmio_complete(unsigned long error, void *context) b->end_io(b, unlikely(error != 0) ? BLK_STS_IOERR : 0); } -static void use_dmio(struct dm_buffer *b, int rw, sector_t sector, +static void use_dmio(struct dm_buffer *b, enum req_op op, sector_t sector, unsigned n_sectors, unsigned offset) { int r; struct dm_io_request io_req = { - .bi_opf = rw, + .bi_opf = op, .notify.fn = dmio_complete, .notify.context = b, .client = b->c->dm_io, @@ -615,7 +615,7 @@ static void bio_complete(struct bio *bio) b->end_io(b, status); } -static void use_bio(struct dm_buffer *b, int rw, sector_t sector, +static void use_bio(struct dm_buffer *b, enum req_op op, sector_t sector, unsigned n_sectors, unsigned offset) { struct bio *bio; @@ -629,10 +629,10 @@ static void use_bio(struct dm_buffer *b, int rw, sector_t sector, bio = bio_kmalloc(vec_size, GFP_NOWAIT | __GFP_NORETRY | __GFP_NOWARN); if (!bio) { dmio: - use_dmio(b, rw, sector, n_sectors, offset); + use_dmio(b, op, sector, n_sectors, offset); return; } - bio_init(bio, b->c->bdev, bio->bi_inline_vecs, vec_size, rw); + bio_init(bio, b->c->bdev, bio->bi_inline_vecs, vec_size, op); bio->bi_iter.bi_sector = sector; bio->bi_end_io = bio_complete; bio->bi_private = b; @@ -668,7 +668,8 @@ static inline sector_t block_to_sector(struct dm_bufio_client *c, sector_t block return sector; } -static void submit_io(struct dm_buffer *b, int rw, void (*end_io)(struct dm_buffer *, blk_status_t)) +static void submit_io(struct dm_buffer *b, enum req_op op, + void (*end_io)(struct dm_buffer *, blk_status_t)) { unsigned n_sectors; sector_t sector; @@ -678,7 +679,7 @@ static void submit_io(struct dm_buffer *b, int rw, void (*end_io)(struct dm_buff sector = block_to_sector(b->c, b->block); - if (rw != REQ_OP_WRITE) { + if (op != REQ_OP_WRITE) { n_sectors = b->c->block_size >> SECTOR_SHIFT; offset = 0; } else { @@ -697,9 +698,9 @@ static void submit_io(struct dm_buffer *b, int rw, void (*end_io)(struct dm_buff } if (b->data_mode != DATA_MODE_VMALLOC) - use_bio(b, rw, sector, n_sectors, offset); + use_bio(b, op, sector, n_sectors, offset); else - use_dmio(b, rw, sector, n_sectors, offset); + use_dmio(b, op, sector, n_sectors, offset); } /*---------------------------------------------------------------- |