Shaohua Li 4a0b75c7d0 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>
2011-12-16 14:00:22 +01:00
..
2011-12-14 00:33:37 +01:00
2011-12-14 00:33:38 +01:00
2011-12-14 00:33:38 +01:00
2011-07-31 22:05:09 +02:00
2011-07-31 22:05:09 +02:00