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53 Commits

Author SHA1 Message Date
Jens Axboe 581d4e28d9 block: add fault injection mechanism for faking request timeouts 
Only works for the generic request timer handling. Allows one to
sporadically ignore request completions, thus exercising the timeout
handling.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
 2008-10-09 08:56:17 +02:00
Mike Anderson 11914a53d2 block: Add interface to abort queued requests 
Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
 2008-10-09 08:56:13 +02:00
Jens Axboe 242f9dcb8b block: unify request timeout handling 
Right now SCSI and others do their own command timeout handling.
Move those bits to the block layer.

Instead of having a timer per command, we try to be a bit more clever
and simply have one per-queue. This avoids the overhead of having to
tear down and setup a timer for each command, so it will result in a lot
less timer fiddling.

Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
 2008-10-09 08:56:13 +02:00