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| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-01-06 12:18:43 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-01-06 12:18:43 (GMT) |
| commit | b35009a9a7e44fd009717b6e3f29e7043dfb29ca (patch) | |
| tree | 5d2e7f27f0620f8a54d12b8d051d04032852115a /block/cfq-iosched.c | |
| parent | 194ed21925032b366e693373ba9bde62fbbf16ed (diff) | |
| parent | 805a6af8dba5dfdd35ec35dc52ec0122400b2610 (diff) | |
| download | linux-b35009a9a7e44fd009717b6e3f29e7043dfb29ca.tar.xz | |
Merge tag 'v3.2' into staging/for_v3.3
* tag 'v3.2': (83 commits)
Linux 3.2
minixfs: misplaced checks lead to dentry leak
ptrace: ensure JOBCTL_STOP_SIGMASK is not zero after detach
ptrace: partially fix the do_wait(WEXITED) vs EXIT_DEAD->EXIT_ZOMBIE race
Revert "rtc: Expire alarms after the time is set."
[CIFS] default ntlmv2 for cifs mount delayed to 3.3
cifs: fix bad buffer length check in coalesce_t2
Revert "rtc: Disable the alarm in the hardware"
hung_task: fix false positive during vfork
security: Fix security_old_inode_init_security() when CONFIG_SECURITY is not set
fix CAN MAINTAINERS SCM tree type
mwifiex: fix crash during simultaneous scan and connect
b43: fix regression in PIO case
ath9k: Fix kernel panic in AR2427 in AP mode
CAN MAINTAINERS update
net: fsl: fec: fix build for mx23-only kernel
sch_qfq: fix overflow in qfq_update_start()
drm/radeon/kms/atom: fix possible segfault in pm setup
gspca: Fix falling back to lower isoc alt settings
futex: Fix uninterruptible loop due to gate_area
...
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 4c12869..3548705 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, |