kernel/linux.git/block/blk-timeout.c, branch linux-2.6.28.y

Block: use round_jiffies_up()

2008-11-06T07:42:49+00:00

This patch (as1159b) changes the timeout routines in the block core to use round_jiffies_up(). There's no point in rounding the timer deadline down, since if it expires too early we will have to restart it. The patch also removes some unnecessary tests when a request is removed from the queue's timer list. Signed-off-by: Alan Stern Signed-off-by: Jens Axboe

block: use rq complete marking in blk_abort_request()

2008-10-09T06:56:17+00:00

We cannot abort a request if we raced with the timeout handler already, or with the IO completion. So make blk_abort_request() mark the request as complete, and only continue if we succeeded. Found and suggested by Mike Anderson Signed-off-by: Jens Axboe

block: add fault injection mechanism for faking request timeouts

2008-10-09T06:56:17+00:00

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

block: Add interface to abort queued requests

2008-10-09T06:56:13+00:00

Signed-off-by: Mike Anderson Signed-off-by: Jens Axboe

block: unify request timeout handling

2008-10-09T06:56:13+00:00

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 Signed-off-by: Jens Axboe