On 10/25/18 11:10 PM, Jens Axboe wrote:
dm supports both, and since we're killing off the legacy path
in general, get rid of it in dm as well.
Signed-off-by: Jens Axboe <ax...@kernel.dk>
---
drivers/md/Kconfig | 11 --
drivers/md/dm-core.h | 10 --
drivers/md/dm-mpath.c | 14 +-
drivers/md/dm-rq.c | 293 ++++--------------------------------------
drivers/md/dm-rq.h | 4 -
drivers/md/dm-sysfs.c | 3 +-
drivers/md/dm-table.c | 36 +-----
drivers/md/dm.c | 21 +--
drivers/md/dm.h | 1 -
9 files changed, 35 insertions(+), 358 deletions(-)
[ .. ]
@@ -790,11 +550,6 @@ int dm_mq_init_request_queue(struct mapped_device *md,
struct dm_table *t)
struct dm_target *immutable_tgt;
int err;
- if (!dm_table_all_blk_mq_devices(t)) {
- DMERR("request-based dm-mq may only be stacked on blk-mq
device(s)");
- return -EINVAL;
- }
-
md->tag_set = kzalloc_node(sizeof(struct blk_mq_tag_set), GFP_KERNEL,
md->numa_node_id);
if (!md->tag_set)
return -ENOMEM;
That warnint is still valid, no?
[ .. ]
@@ -2217,13 +2211,6 @@ int dm_setup_md_queue(struct mapped_device *md, struct
dm_table *t)
switch (type) {
case DM_TYPE_REQUEST_BASED:
- dm_init_normal_md_queue(md);
- r = dm_old_init_request_queue(md, t);
- if (r) {
- DMERR("Cannot initialize queue for request-based mapped
device");
- return r;
- }
- break;
case DM_TYPE_MQ_REQUEST_BASED:
r = dm_mq_init_request_queue(md, t);
if (r) {
I'd love to kill DM_TYPE_REQUEST_BASED completely, seeing that it's
referring to the now-defunct legacy I/O path.
Mike?
Cheers,
Hannes
