[PATCH] Remove struct request_list from struct request
It is always identical to &q->rq, and we only use it for detecting
whether this request came out of our mempool or not. So replace it
with an additional ->flags bit flag.
Signed-off-by: Jens Axboe <axboe@suse.de>
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index 3b6aad2..f746250 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -452,7 +452,6 @@
rq->elevator_private = NULL;
rq->elevator_private2 = NULL;
rq->rq_disk = q->bar_rq.rq_disk;
- rq->rl = NULL;
rq->end_io = end_io;
q->prepare_flush_fn(q, rq);
@@ -480,7 +479,6 @@
rq->cmd_flags |= q->ordered & QUEUE_ORDERED_FUA ? REQ_FUA : 0;
rq->elevator_private = NULL;
rq->elevator_private2 = NULL;
- rq->rl = NULL;
init_request_from_bio(rq, q->orig_bar_rq->bio);
rq->end_io = bar_end_io;
@@ -2018,7 +2016,7 @@
* first three bits are identical in rq->cmd_flags and bio->bi_rw,
* see bio.h and blkdev.h
*/
- rq->cmd_flags = rw;
+ rq->cmd_flags = rw | REQ_ALLOCED;
if (priv) {
if (unlikely(elv_set_request(q, rq, bio, gfp_mask))) {
@@ -2196,7 +2194,6 @@
ioc->nr_batch_requests--;
rq_init(q, rq);
- rq->rl = rl;
blk_add_trace_generic(q, bio, rw, BLK_TA_GETRQ);
out:
@@ -2681,8 +2678,6 @@
*/
void __blk_put_request(request_queue_t *q, struct request *req)
{
- struct request_list *rl = req->rl;
-
if (unlikely(!q))
return;
if (unlikely(--req->ref_count))
@@ -2691,13 +2686,12 @@
elv_completed_request(q, req);
req->rq_status = RQ_INACTIVE;
- req->rl = NULL;
/*
* Request may not have originated from ll_rw_blk. if not,
* it didn't come out of our reserved rq pools
*/
- if (rl) {
+ if (req->cmd_flags & REQ_ALLOCED) {
int rw = rq_data_dir(req);
int priv = req->cmd_flags & REQ_ELVPRIV;