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dm: rename target's per_bio_data_size to per_io_data_size

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Request-based DM will also make use of per_bio_data_size.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Mike Snitzer 2016-01-31 13:28:26 -05:00
parent eca7ee6dc0
commit 30187e1d48
13 changed files with 25 additions and 25 deletions
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2
drivers/md/dm-cache-target.c
View file

@ -2771,7 +2771,7 @@ static int cache_create(struct cache_args *ca, struct cache **result)
ti->split_discard_bios = false;
cache->features = ca->features;
ti->per_bio_data_size = get_per_bio_data_size(cache);
ti->per_io_data_size = get_per_bio_data_size(cache);
cache->callbacks.congested_fn = cache_is_congested;
dm_table_add_target_callbacks(ti->table, &cache->callbacks);

2
drivers/md/dm-crypt.c
View file

@ -1788,7 +1788,7 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv)
goto bad;
}
cc->per_bio_data_size = ti->per_bio_data_size =
cc->per_bio_data_size = ti->per_io_data_size =
ALIGN(sizeof(struct dm_crypt_io) + cc->dmreq_start +
sizeof(struct dm_crypt_request) + iv_size_padding + cc->iv_size,
ARCH_KMALLOC_MINALIGN);

2
drivers/md/dm-delay.c
View file

@ -204,7 +204,7 @@ static int delay_ctr(struct dm_target *ti, unsigned int argc, char **argv)
ti->num_flush_bios = 1;
ti->num_discard_bios = 1;
ti->per_bio_data_size = sizeof(struct dm_delay_info);
ti->per_io_data_size = sizeof(struct dm_delay_info);
ti->private = dc;
return 0;

2
drivers/md/dm-flakey.c
View file

@ -220,7 +220,7 @@ static int flakey_ctr(struct dm_target *ti, unsigned int argc, char **argv)
ti->num_flush_bios = 1;
ti->num_discard_bios = 1;
ti->per_bio_data_size = sizeof(struct per_bio_data);
ti->per_io_data_size = sizeof(struct per_bio_data);
ti->private = fc;
return 0;

2
drivers/md/dm-log-writes.c
View file

@ -475,7 +475,7 @@ static int log_writes_ctr(struct dm_target *ti, unsigned int argc, char **argv)
ti->flush_supported = true;
ti->num_discard_bios = 1;
ti->discards_supported = true;
ti->per_bio_data_size = sizeof(struct per_bio_data);
ti->per_io_data_size = sizeof(struct per_bio_data);
ti->private = lc;
return 0;

2
drivers/md/dm-raid1.c
View file

@ -1121,7 +1121,7 @@ static int mirror_ctr(struct dm_target *ti, unsigned int argc, char **argv)
ti->num_flush_bios = 1;
ti->num_discard_bios = 1;
ti->per_bio_data_size = sizeof(struct dm_raid1_bio_record);
ti->per_io_data_size = sizeof(struct dm_raid1_bio_record);
ti->discard_zeroes_data_unsupported = true;
ms->kmirrord_wq = alloc_workqueue("kmirrord", WQ_MEM_RECLAIM, 0);

2
drivers/md/dm-snap.c
View file

@ -1201,7 +1201,7 @@ static int snapshot_ctr(struct dm_target *ti, unsigned int argc, char **argv)
ti->private = s;
ti->num_flush_bios = num_flush_bios;
ti->per_bio_data_size = sizeof(struct dm_snap_tracked_chunk);
ti->per_io_data_size = sizeof(struct dm_snap_tracked_chunk);
/* Add snapshot to the list of snapshots for this origin */
/* Exceptions aren't triggered till snapshot_resume() is called */

6
drivers/md/dm-table.c
View file

@ -957,7 +957,7 @@ bool dm_table_mq_request_based(struct dm_table *t)
static int dm_table_alloc_md_mempools(struct dm_table *t, struct mapped_device *md)
{
unsigned type = dm_table_get_type(t);
unsigned per_bio_data_size = 0;
unsigned per_io_data_size = 0;
struct dm_target *tgt;
unsigned i;
@ -969,10 +969,10 @@ static int dm_table_alloc_md_mempools(struct dm_table *t, struct mapped_device *
if (type == DM_TYPE_BIO_BASED)
for (i = 0; i < t->num_targets; i++) {
tgt = t->targets + i;
per_bio_data_size = max(per_bio_data_size, tgt->per_bio_data_size);
per_io_data_size = max(per_io_data_size, tgt->per_io_data_size);
}
t->mempools = dm_alloc_md_mempools(md, type, t->integrity_supported, per_bio_data_size);
t->mempools = dm_alloc_md_mempools(md, type, t->integrity_supported, per_io_data_size);
if (!t->mempools)
return -ENOMEM;

2
drivers/md/dm-thin.c
View file

@ -4037,7 +4037,7 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv)
ti->num_flush_bios = 1;
ti->flush_supported = true;
ti->per_bio_data_size = sizeof(struct dm_thin_endio_hook);
ti->per_io_data_size = sizeof(struct dm_thin_endio_hook);
/* In case the pool supports discards, pass them on. */
ti->discard_zeroes_data_unsupported = true;

2
drivers/md/dm-verity-fec.c
View file

@ -812,7 +812,7 @@ int verity_fec_ctr(struct dm_verity *v)
}
/* Reserve space for our per-bio data */
ti->per_bio_data_size += sizeof(struct dm_verity_fec_io);
ti->per_io_data_size += sizeof(struct dm_verity_fec_io);
return 0;
}

12
drivers/md/dm-verity-target.c
View file

@ -354,7 +354,7 @@ int verity_for_bv_block(struct dm_verity *v, struct dm_verity_io *io,
size_t len))
{
unsigned todo = 1 << v->data_dev_block_bits;
struct bio *bio = dm_bio_from_per_bio_data(io, v->ti->per_bio_data_size);
struct bio *bio = dm_bio_from_per_bio_data(io, v->ti->per_io_data_size);
do {
int r;
@ -460,7 +460,7 @@ static int verity_verify_io(struct dm_verity_io *io)
static void verity_finish_io(struct dm_verity_io *io, int error)
{
struct dm_verity *v = io->v;
struct bio *bio = dm_bio_from_per_bio_data(io, v->ti->per_bio_data_size);
struct bio *bio = dm_bio_from_per_bio_data(io, v->ti->per_io_data_size);
bio->bi_end_io = io->orig_bi_end_io;
bio->bi_error = error;
@ -574,7 +574,7 @@ static int verity_map(struct dm_target *ti, struct bio *bio)
if (bio_data_dir(bio) == WRITE)
return -EIO;
io = dm_per_bio_data(bio, ti->per_bio_data_size);
io = dm_per_bio_data(bio, ti->per_io_data_size);
io->v = v;
io->orig_bi_end_io = bio->bi_end_io;
io->block = bio->bi_iter.bi_sector >> (v->data_dev_block_bits - SECTOR_SHIFT);
@ -1036,15 +1036,15 @@ static int verity_ctr(struct dm_target *ti, unsigned argc, char **argv)
goto bad;
}
ti->per_bio_data_size = sizeof(struct dm_verity_io) +
ti->per_io_data_size = sizeof(struct dm_verity_io) +
v->shash_descsize + v->digest_size * 2;
r = verity_fec_ctr(v);
if (r)
goto bad;
ti->per_bio_data_size = roundup(ti->per_bio_data_size,
__alignof__(struct dm_verity_io));
ti->per_io_data_size = roundup(ti->per_io_data_size,
__alignof__(struct dm_verity_io));
return 0;

8
drivers/md/dm.c
View file

@ -3476,7 +3476,7 @@ int dm_noflush_suspending(struct dm_target *ti)
EXPORT_SYMBOL_GPL(dm_noflush_suspending);
struct dm_md_mempools *dm_alloc_md_mempools(struct mapped_device *md, unsigned type,
unsigned integrity, unsigned per_bio_data_size)
unsigned integrity, unsigned per_io_data_size)
{
struct dm_md_mempools *pools = kzalloc(sizeof(*pools), GFP_KERNEL);
struct kmem_cache *cachep = NULL;
@ -3492,7 +3492,7 @@ struct dm_md_mempools *dm_alloc_md_mempools(struct mapped_device *md, unsigned t
case DM_TYPE_BIO_BASED:
cachep = _io_cache;
pool_size = dm_get_reserved_bio_based_ios();
front_pad = roundup(per_bio_data_size, __alignof__(struct dm_target_io)) + offsetof(struct dm_target_io, clone);
front_pad = roundup(per_io_data_size, __alignof__(struct dm_target_io)) + offsetof(struct dm_target_io, clone);
break;
case DM_TYPE_REQUEST_BASED:
cachep = _rq_tio_cache;
@ -3505,8 +3505,8 @@ struct dm_md_mempools *dm_alloc_md_mempools(struct mapped_device *md, unsigned t
if (!pool_size)
pool_size = dm_get_reserved_rq_based_ios();
front_pad = offsetof(struct dm_rq_clone_bio_info, clone);
/* per_bio_data_size is not used. See __bind_mempools(). */
WARN_ON(per_bio_data_size != 0);
/* per_io_data_size is not used. */
WARN_ON(per_io_data_size != 0);
break;
default:
BUG();

6
include/linux/device-mapper.h
View file

@ -238,10 +238,10 @@ struct dm_target {
unsigned num_write_same_bios;
/*
* The minimum number of extra bytes allocated in each bio for the
* target to use. dm_per_bio_data returns the data location.
* The minimum number of extra bytes allocated in each io for the
* target to use.
*/
unsigned per_bio_data_size;
unsigned per_io_data_size;
/*
* If defined, this function is called to find out how many