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block: set request_list for request

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Legacy queue sets request's request_list, mq doesn't. This makes mq does
the same thing, so we can find cgroup of a request. Note, we really
only use blkg field of request_list, it's pointless to allocate mempool
for request_list in mq case.

Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Shaohua Li
2017-10-06 17:56:00 -07:00
committed by Jens Axboe
parent eca8b53a67
commit 85acb3ba2f
2 changed files with 6 additions and 1 deletions
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block/blk-mq.c
+5
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@@ -481,6 +481,9 @@ void blk_mq_free_request(struct request *rq)
wbt_done(q->rq_wb, &rq->issue_stat);
if (blk_rq_rl(rq))
blk_put_rl(blk_rq_rl(rq));
clear_bit(REQ_ATOM_STARTED, &rq->atomic_flags);
clear_bit(REQ_ATOM_POLL_SLEPT, &rq->atomic_flags);
if (rq->tag != -1)
@@ -1532,6 +1535,8 @@ static void blk_mq_bio_to_request(struct request *rq, struct bio *bio)
{
blk_init_request_from_bio(rq, bio);
blk_rq_set_rl(rq, blk_get_rl(rq->q, bio));
blk_account_io_start(rq, true);
}