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(parent: 0c9539a) | patch
block: fix leak of q->rq_wb
authorOmar Sandoval <osandov@fb.com>
Tue, 28 Mar 2017 23:12:17 +0000 (16:12 -0700)
committerJens Axboe <axboe@fb.com>
Wed, 29 Mar 2017 14:09:08 +0000 (08:09 -0600)
commit02ba8893ac9aa34fcb4ce2a9baef5615b190335a
tree772bf87a8074d74b8748e878249568627a2cce0btree | snapshot
parent0c9539a431bd4e4cbe475eb17e587f3ac06f2ae2commit | diff
block: fix leak of q->rq_wb

CONFIG_DEBUG_TEST_DRIVER_REMOVE found a possible leak of q->rq_wb when a
request queue is reregistered. This has been a problem since wbt was
introduced, but the WARN_ON(!list_empty(&stats->callbacks)) in the
blk-stat rework exposed it. Fix it by cleaning up wbt when we unregister
the queue.

Fixes: 87760e5eef35 ("block: hook up writeback throttling")
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
block/blk-sysfs.c diff | blob | history
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