diff options
author | Clark Williams <williams@redhat.com> | 2012-01-05 12:51:32 -0600 |
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committer | Clark Williams <williams@redhat.com> | 2012-01-05 12:51:32 -0600 |
commit | d76fe430665fac3f44ee88958713ecc524fd778d (patch) | |
tree | 00206c8b11eb2084d38eeccfe4b41f5e89fb779c /block/cfq-iosched.c | |
parent | 63076d7f7f7f2650e5d0a4fa5dd2c412a255c237 (diff) | |
parent | 805a6af8dba5dfdd35ec35dc52ec0122400b2610 (diff) |
Merge commit 'v3.2' into rt-3.2-rt9v3.2-rt9
Diffstat (limited to 'block/cfq-iosched.c')
-rw-r--r-- | block/cfq-iosched.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index 4c12869fcf77..3548705b04e4 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -1655,6 +1655,8 @@ cfq_merged_requests(struct request_queue *q, struct request *rq, struct request *next) { struct cfq_queue *cfqq = RQ_CFQQ(rq); + struct cfq_data *cfqd = q->elevator->elevator_data; + /* * reposition in fifo if next is older than rq */ @@ -1669,6 +1671,16 @@ cfq_merged_requests(struct request_queue *q, struct request *rq, cfq_remove_request(next); cfq_blkiocg_update_io_merged_stats(&(RQ_CFQG(rq))->blkg, rq_data_dir(next), rq_is_sync(next)); + + cfqq = RQ_CFQQ(next); + /* + * all requests of this queue are merged to other queues, delete it + * from the service tree. If it's the active_queue, + * cfq_dispatch_requests() will choose to expire it or do idle + */ + if (cfq_cfqq_on_rr(cfqq) && RB_EMPTY_ROOT(&cfqq->sort_list) && + cfqq != cfqd->active_queue) + cfq_del_cfqq_rr(cfqd, cfqq); } static int cfq_allow_merge(struct request_queue *q, struct request *rq, |