diff options
author | Mike Snitzer <snitzer@redhat.com> | 2010-08-12 03:14:04 (GMT) |
---|---|---|
committer | Alasdair G Kergon <agk@redhat.com> | 2010-08-12 03:14:04 (GMT) |
commit | 57cba5d3658d9fdc019c6af14a2d80aefa651e56 (patch) | |
tree | 4905a162b6785e1a1228b8870d8011cf9035147a /drivers | |
parent | 26803b9f06d365122fae82e7554a66ef8278e0bb (diff) | |
download | linux-57cba5d3658d9fdc019c6af14a2d80aefa651e56.tar.xz |
dm: rename map_info flush_request to target_request_nr
'target_request_nr' is a more generic name that reflects the fact that
it will be used for both flush and discard support.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/md/dm-snap.c | 2 | ||||
-rw-r--r-- | drivers/md/dm-stripe.c | 6 | ||||
-rw-r--r-- | drivers/md/dm.c | 18 |
3 files changed, 14 insertions, 12 deletions
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index 96feada..5974d30 100644 --- a/drivers/md/dm-snap.c +++ b/drivers/md/dm-snap.c @@ -1692,7 +1692,7 @@ static int snapshot_merge_map(struct dm_target *ti, struct bio *bio, chunk_t chunk; if (unlikely(bio_empty_barrier(bio))) { - if (!map_context->flush_request) + if (!map_context->target_request_nr) bio->bi_bdev = s->origin->bdev; else bio->bi_bdev = s->cow->bdev; diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c index d6e28d7..22d5e2f 100644 --- a/drivers/md/dm-stripe.c +++ b/drivers/md/dm-stripe.c @@ -213,10 +213,12 @@ static int stripe_map(struct dm_target *ti, struct bio *bio, struct stripe_c *sc = (struct stripe_c *) ti->private; sector_t offset, chunk; uint32_t stripe; + unsigned target_request_nr; if (unlikely(bio_empty_barrier(bio))) { - BUG_ON(map_context->flush_request >= sc->stripes); - bio->bi_bdev = sc->stripe[map_context->flush_request].dev->bdev; + target_request_nr = map_context->target_request_nr; + BUG_ON(target_request_nr >= sc->stripes); + bio->bi_bdev = sc->stripe[target_request_nr].dev->bdev; return DM_MAPIO_REMAPPED; } diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 5ae0a05..0d47101 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1183,12 +1183,12 @@ static struct dm_target_io *alloc_tio(struct clone_info *ci, } static void __flush_target(struct clone_info *ci, struct dm_target *ti, - unsigned flush_nr) + unsigned request_nr) { struct dm_target_io *tio = alloc_tio(ci, ti); struct bio *clone; - tio->info.flush_request = flush_nr; + tio->info.target_request_nr = request_nr; clone = bio_alloc_bioset(GFP_NOIO, 0, ci->md->bs); __bio_clone(clone, ci->bio); @@ -1199,13 +1199,13 @@ static void __flush_target(struct clone_info *ci, struct dm_target *ti, static int __clone_and_map_empty_barrier(struct clone_info *ci) { - unsigned target_nr = 0, flush_nr; + unsigned target_nr = 0, request_nr; struct dm_target *ti; while ((ti = dm_table_get_target(ci->map, target_nr++))) - for (flush_nr = 0; flush_nr < ti->num_flush_requests; - flush_nr++) - __flush_target(ci, ti, flush_nr); + for (request_nr = 0; request_nr < ti->num_flush_requests; + request_nr++) + __flush_target(ci, ti, request_nr); ci->sector_count = 0; @@ -2424,11 +2424,11 @@ static void dm_queue_flush(struct mapped_device *md) queue_work(md->wq, &md->work); } -static void dm_rq_set_flush_nr(struct request *clone, unsigned flush_nr) +static void dm_rq_set_target_request_nr(struct request *clone, unsigned request_nr) { struct dm_rq_target_io *tio = clone->end_io_data; - tio->info.flush_request = flush_nr; + tio->info.target_request_nr = request_nr; } /* Issue barrier requests to targets and wait for their completion. */ @@ -2446,7 +2446,7 @@ static int dm_rq_barrier(struct mapped_device *md) ti = dm_table_get_target(map, i); for (j = 0; j < ti->num_flush_requests; j++) { clone = clone_rq(md->flush_request, md, GFP_NOIO); - dm_rq_set_flush_nr(clone, j); + dm_rq_set_target_request_nr(clone, j); atomic_inc(&md->pending[rq_data_dir(clone)]); map_request(ti, clone, md); } |