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authorShaohua Li <shaohua.li@intel.com>2011-12-16 14:00:22 +0100
committerJens Axboe <axboe@kernel.dk>2011-12-16 14:00:22 +0100
commit4a0b75c7d02c2bd46ed227d4ba5941ba8a0aba5d (patch)
treea5a0c37a44c87227539ebc356178cc80435144d9 /net/sctp
parentf1f8cc94651738b418ba54c039df536303b91704 (diff)
downloadlinux-4a0b75c7d02c2bd46ed227d4ba5941ba8a0aba5d.tar.bz2
block, cfq: fix empty queue crash caused by request merge
All requests of a queue could be merged to other requests of other queue. Such queue will not have request in it, but it's in service tree. This will cause kernel oops. I encounter a BUG_ON() in cfq_dispatch_request() with next patch, but the issue should exist without the patch. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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