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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-09-11 04:34:46 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-09-11 04:34:46 -0300 |
| commit | 863981e96738983919de841ec669e157e6bdaeb0 (patch) | |
| tree | d6d89a12e7eb8017837c057935a2271290907f76 /block/cfq-iosched.c | |
| parent | 8dec7c70575785729a6a9e6719a955e9c545bcab (diff) | |
Linux-libre 4.7.1-gnupck-4.7.1-gnu
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 4a349787b..49707ef43 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -3751,6 +3751,18 @@ static void check_blkcg_changed(struct cfq_io_cq *cic, struct bio *bio) return; /* + * If we have a non-root cgroup, we can depend on that to + * do proper throttling of writes. Turn off wbt for that + * case. + */ + if (bio_blkcg(bio) != &blkcg_root) { + struct request_queue *q = cfqd->queue; + + if (q->rq_wb) + wbt_disable(q->rq_wb); + } + + /* * Drop reference to queues. New queues will be assigned in new * group upon arrival of fresh requests. */ |