diff options
| author | Jan Engelmohr <jan.engelmohr@mailbox.tu-dresden.de> | 2016-07-26 18:10:00 +0200 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2016-08-26 15:59:39 +0200 |
| commit | d2ee3e254ee0939806c103c145035ddac9fe5953 (patch) | |
| tree | 2fc8a4984c6cec24591bb68f3e0623bd1c1d45fc /block | |
| parent | a2904e3eed56216fe65091d9b3638ae1f90e43fa (diff) | |
3.10.70 -> 3.10.71
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-throttle.c | 3 | ||||
| -rw-r--r-- | block/cfq-iosched.c | 16 |
2 files changed, 16 insertions, 3 deletions
diff --git a/block/blk-throttle.c b/block/blk-throttle.c index 31146225f..7cddfe6ba 100644 --- a/block/blk-throttle.c +++ b/block/blk-throttle.c @@ -942,6 +942,9 @@ static u64 tg_prfill_cpu_rwstat(struct seq_file *sf, struct blkg_rwstat rwstat = { }, tmp; int i, cpu; + if (tg->stats_cpu == NULL) + return 0; + for_each_possible_cpu(cpu) { struct tg_stats_cpu *sc = per_cpu_ptr(tg->stats_cpu, cpu); diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index c981097dd..69111c5c3 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -3575,6 +3575,11 @@ retry: blkcg = bio_blkcg(bio); cfqg = cfq_lookup_create_cfqg(cfqd, blkcg); + if (!cfqg) { + cfqq = &cfqd->oom_cfqq; + goto out; + } + cfqq = cic_to_cfqq(cic, is_sync); /* @@ -3611,7 +3616,7 @@ retry: } else cfqq = &cfqd->oom_cfqq; } - +out: if (new_cfqq) kmem_cache_free(cfq_pool, new_cfqq); @@ -3641,12 +3646,17 @@ static struct cfq_queue * cfq_get_queue(struct cfq_data *cfqd, bool is_sync, struct cfq_io_cq *cic, struct bio *bio, gfp_t gfp_mask) { - const int ioprio_class = IOPRIO_PRIO_CLASS(cic->ioprio); - const int ioprio = IOPRIO_PRIO_DATA(cic->ioprio); + int ioprio_class = IOPRIO_PRIO_CLASS(cic->ioprio); + int ioprio = IOPRIO_PRIO_DATA(cic->ioprio); struct cfq_queue **async_cfqq = NULL; struct cfq_queue *cfqq = NULL; if (!is_sync) { + if (!ioprio_valid(cic->ioprio)) { + struct task_struct *tsk = current; + ioprio = task_nice_ioprio(tsk); + ioprio_class = task_nice_ioclass(tsk); + } async_cfqq = cfq_async_queue_prio(cfqd, ioprio_class, ioprio); cfqq = *async_cfqq; } |