blk-mq: fix potential oops on out-of-memory in __blk_mq_alloc_rq_maps()

__blk_mq_alloc_rq_maps() can be invoked multiple times, if we scale
back the queue depth if we are low on memory. So don't clear
set->tags when we fail, this is handled directly in
the parent function, blk_mq_alloc_tag_set().

Reported-by: Robert Elliott  <Elliott@hp.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Jens Axboe 2014-09-19 08:04:53 -06:00
parent a57a178a49
commit 6b55e1f2d0
1 changed files with 0 additions and 1 deletions

View File

@ -1959,7 +1959,6 @@ out_unwind:
while (--i >= 0)
blk_mq_free_rq_map(set, set->tags[i], i);
set->tags = NULL;
return -ENOMEM;
}