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(parent: 7afafc8) | patch
block: Fix race triggered by blk_set_queue_dying()
authorBart Van Assche <bart.vanassche@sandisk.com>
Tue, 16 Aug 2016 23:48:36 +0000 (16:48 -0700)
committerJens Axboe <axboe@fb.com>
Wed, 17 Aug 2016 01:36:14 +0000 (19:36 -0600)
commit1b856086813be9371929b6cc62045f9fd470f5a0
tree2ed054abb499ec7f19b63f9f5b24acff932d079ftree | snapshot
parent7afafc8a44bf0ab841b17d450b02aedb3a138985commit | diff
block: Fix race triggered by blk_set_queue_dying()

blk_set_queue_dying() can be called while another thread is
submitting I/O or changing queue flags, e.g. through dm_stop_queue().
Hence protect the QUEUE_FLAG_DYING flag change with locking.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
block/blk-core.c diff | blob | history
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