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authorMike Snitzer <snitzer@redhat.com>2016-02-01 01:38:28 +0300
committerMike Snitzer <snitzer@redhat.com>2016-02-23 06:34:39 +0300
commit78ce23b51802f5e917d89e8fc9a56dec6cc2fd5b (patch)
tree9c0e4139ce06b366f089d28e7236fe0ff3953d34 /drivers/md/dm-mpath.c
parent2eff1924e1d3f90a5e40cf4bcc18bf05d57c7c15 (diff)
downloadlinux-78ce23b51802f5e917d89e8fc9a56dec6cc2fd5b.tar.xz
dm mpath: use blk_mq_alloc_request() and blk_mq_free_request() directly
There isn't any need to support both old .request_fn and blk-mq paths in the blk-mq specific portion of __multipath_map(). Call blk_mq_alloc_request() directly rather than use blk_get_request(). Similarly, call blk_mq_free_request(), rather than blk_put_request(), in multipath_release_clone(). Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-mpath.c')
-rw-r--r--drivers/md/dm-mpath.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 2f7c6a550a2d..d31fce508f8f 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -23,6 +23,7 @@
#include <linux/delay.h>
#include <scsi/scsi_dh.h>
#include <linux/atomic.h>
+#include <linux/blk-mq.h>
#define DM_MSG_PREFIX "multipath"
#define DM_PG_INIT_DELAY_MSECS 2000
@@ -452,8 +453,8 @@ static int __multipath_map(struct dm_target *ti, struct request *clone,
* .request_fn stacked on blk-mq path(s) and
* blk-mq stacked on blk-mq path(s).
*/
- *__clone = blk_get_request(bdev_get_queue(bdev),
- rq_data_dir(rq), GFP_ATOMIC);
+ *__clone = blk_mq_alloc_request(bdev_get_queue(bdev),
+ rq_data_dir(rq), BLK_MQ_REQ_NOWAIT);
if (IS_ERR(*__clone)) {
/* ENOMEM, requeue */
clear_request_fn_mpio(m, map_context);
@@ -491,7 +492,7 @@ static int multipath_clone_and_map(struct dm_target *ti, struct request *rq,
static void multipath_release_clone(struct request *clone)
{
- blk_put_request(clone);
+ blk_mq_free_request(clone);
}
/*