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>
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 2f7c6a5..d31fce5 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 @@
* .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 void multipath_release_clone(struct request *clone)
{
- blk_put_request(clone);
+ blk_mq_free_request(clone);
}
/*