tree 8d5c5d578cba71e51d11f2231f5528d0aa9dd7e0
parent a57a178a490345c7236b0077b3de005754389ed6
author Jens Axboe <axboe@fb.com> 1411135493 -0600
committer Jens Axboe <axboe@fb.com> 1411408523 -0600

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>