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authorChristoph Hellwig <hch@lst.de>2018-11-10 09:30:48 +0100
committerJens Axboe <axboe@kernel.dk>2018-11-10 08:03:50 -0700
commit289d088b66182076d33b5579417d429371cf9dfd (patch)
treeb1f6e8af24a154ddb1a4292f21522a40c8a1472c /drivers
parent61e7712e25bbe964c9537bb1171bac4df7afa593 (diff)
downloadlinux-289d088b66182076d33b5579417d429371cf9dfd.tar.bz2
pd: replace ->special use with private data in the request
Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/block/paride/pd.c30
1 files changed, 25 insertions, 5 deletions
diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c
index ae4971e5d9a8..0ff9b12d0e35 100644
--- a/drivers/block/paride/pd.c
+++ b/drivers/block/paride/pd.c
@@ -242,6 +242,11 @@ struct pd_unit {
static struct pd_unit pd[PD_UNITS];
+struct pd_req {
+ /* for REQ_OP_DRV_IN: */
+ enum action (*func)(struct pd_unit *disk);
+};
+
static char pd_scratch[512]; /* scratch block buffer */
static char *pd_errs[17] = { "ERR", "INDEX", "ECC", "DRQ", "SEEK", "WRERR",
@@ -502,8 +507,9 @@ static enum action do_pd_io_start(void)
static enum action pd_special(void)
{
- enum action (*func)(struct pd_unit *) = pd_req->special;
- return func(pd_current);
+ struct pd_req *req = blk_mq_rq_to_pdu(pd_req);
+
+ return req->func(pd_current);
}
static int pd_next_buf(void)
@@ -767,12 +773,14 @@ static int pd_special_command(struct pd_unit *disk,
enum action (*func)(struct pd_unit *disk))
{
struct request *rq;
+ struct pd_req *req;
rq = blk_get_request(disk->gd->queue, REQ_OP_DRV_IN, 0);
if (IS_ERR(rq))
return PTR_ERR(rq);
+ req = blk_mq_rq_to_pdu(rq);
- rq->special = func;
+ req->func = func;
blk_execute_rq(disk->gd->queue, disk->gd, rq, 0);
blk_put_request(rq);
return 0;
@@ -892,9 +900,21 @@ static void pd_probe_drive(struct pd_unit *disk)
disk->gd = p;
p->private_data = disk;
- p->queue = blk_mq_init_sq_queue(&disk->tag_set, &pd_mq_ops, 2,
- BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_BLOCKING);
+ memset(&disk->tag_set, 0, sizeof(disk->tag_set));
+ disk->tag_set.ops = &pd_mq_ops;
+ disk->tag_set.cmd_size = sizeof(struct pd_req);
+ disk->tag_set.nr_hw_queues = 1;
+ disk->tag_set.nr_maps = 1;
+ disk->tag_set.queue_depth = 2;
+ disk->tag_set.numa_node = NUMA_NO_NODE;
+ disk->tag_set.flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_BLOCKING;
+
+ if (blk_mq_alloc_tag_set(&disk->tag_set))
+ return;
+
+ p->queue = blk_mq_init_queue(&disk->tag_set);
if (IS_ERR(p->queue)) {
+ blk_mq_free_tag_set(&disk->tag_set);
p->queue = NULL;
return;
}