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| author |   Shaohua Li <shaohua.li@intel.com> | 2011-12-16 14:00:22 +0100 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2011-12-16 14:00:22 +0100 |
| commit | 4a0b75c7d02c2bd46ed227d4ba5941ba8a0aba5d (patch) | |
| tree | a5a0c37a44c87227539ebc356178cc80435144d9 /block/elevator.c | |
| parent | block, cfq: move icq creation and rq->elv.icq association to block core (diff) | |
| download | linux-dev-4a0b75c7d02c2bd46ed227d4ba5941ba8a0aba5d.tar.xz linux-dev-4a0b75c7d02c2bd46ed227d4ba5941ba8a0aba5d.zip | |
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>
Diffstat (limited to 'block/elevator.c')
0 files changed, 0 insertions, 0 deletions