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authorTejun Heo <tj@kernel.org>2016-11-21 18:03:32 -0500
committerJens Axboe <axboe@fb.com>2016-11-22 08:59:49 -0700
commite00f4f4d0ff7e13b9115428a245b49108d625f09 (patch)
treec7ba017472071fe72b1d99628fba056b96a56575 /block/cfq-iosched.c
parent05aea81b4bc9e51dabd4559666c1d8d004f3662a (diff)
downloadlinux-0-day-e00f4f4d0ff7e13b9115428a245b49108d625f09.tar.gz
block,blkcg: use __GFP_NOWARN for best-effort allocations in blkcg
blkcg allocates some per-cgroup data structures with GFP_NOWAIT and when that fails falls back to operations which aren't specific to the cgroup. Occassional failures are expected under pressure and falling back to non-cgroup operation is the right thing to do. Unfortunately, I forgot to add __GFP_NOWARN to these allocations and these expected failures end up creating a lot of noise. Add __GFP_NOWARN. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Marc MERLIN <marc@merlins.org> Reported-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/cfq-iosched.c')
-rw-r--r--block/cfq-iosched.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index e280d08..9894dc9 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -3859,7 +3859,8 @@ cfq_get_queue(struct cfq_data *cfqd, bool is_sync, struct cfq_io_cq *cic,
goto out;
}
- cfqq = kmem_cache_alloc_node(cfq_pool, GFP_NOWAIT | __GFP_ZERO,
+ cfqq = kmem_cache_alloc_node(cfq_pool,
+ GFP_NOWAIT | __GFP_ZERO | __GFP_NOWARN,
cfqd->queue->node);
if (!cfqq) {
cfqq = &cfqd->oom_cfqq;