diff options
| author |   Mike Snitzer <snitzer@redhat.com> | 2017-12-04 21:07:37 -0500 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2017-12-20 10:51:10 -0500 |
| commit | 22c11858e8002592c59ebb762e4e42dc634bf84f (patch) | |
| tree | 63b1f14112ef5fe3dcab55747e3754370da07fec /drivers/md/dm.c | |
| parent | dm: simplify start of block stats accounting for bio-based (diff) | |
| download | linux-dev-22c11858e8002592c59ebb762e4e42dc634bf84f.tar.xz linux-dev-22c11858e8002592c59ebb762e4e42dc634bf84f.zip | |
dm: introduce DM_TYPE_NVME_BIO_BASED
If dm_table_determine_type() establishes DM_TYPE_NVME_BIO_BASED then
all devices in the DM table do not support partial completions. Also,
the table has a single immutable target that doesn't require DM core to
split bios.
This will enable adding NVMe optimizations to bio-based DM.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm.c')
| -rw-r--r-- | drivers/md/dm.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index cbb4ae5051fc..a1bd7a6ff522 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2073,6 +2073,7 @@ int dm_setup_md_queue(struct mapped_device *md, struct dm_table *t) break; case DM_TYPE_BIO_BASED: case DM_TYPE_DAX_BIO_BASED: + case DM_TYPE_NVME_BIO_BASED: dm_init_normal_md_queue(md); blk_queue_make_request(md->queue, dm_make_request); break; @@ -2780,6 +2781,7 @@ struct dm_md_mempools *dm_alloc_md_mempools(struct mapped_device *md, enum dm_qu switch (type) { case DM_TYPE_BIO_BASED: case DM_TYPE_DAX_BIO_BASED: + case DM_TYPE_NVME_BIO_BASED: pool_size = max(dm_get_reserved_bio_based_ios(), min_pool_size); front_pad = roundup(per_io_data_size, __alignof__(struct dm_target_io)) + offsetof(struct dm_target_io, clone); io_front_pad = roundup(front_pad, __alignof__(struct dm_io)) + offsetof(struct dm_io, tio); |