tree 6c7d82a398d92e48ee01563a0fc6f9a13ec442e4
parent 5d85d3247cc3555215d7d11c78576a396c98e4d9
author James Bottomley <James.Bottomley@HansenPartnership.com> 1243658629 +0200
committer Jens Axboe <jens.axboe@oracle.com> 1243658629 +0200

block: fix an oops on BLKPREP_KILL

Doing a bit of torture testing, I ran across a BUG in the block
subsystem (at blk-core.c:2048): the test for if the request is queued.

It turns out the trigger was a BLKPREP_KILL coming out of the SCSI prep
function.  Currently for BLKPREP_KILL requests, we send them straight
into __blk_end_request_all() with an error, but they've never been
dequeued, so they trip the bug.  Fix this by starting requests before
killing them.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>