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authorTejun Heo <tj@kernel.org>2009-05-08 11:54:05 +0900
committerJens Axboe <jens.axboe@oracle.com>2009-05-11 09:52:15 +0200
commit2d75ce084eec2a8154225c7e978191b364029003 (patch)
tree98e529e9acb8b370841ff30a3b967e79c1ac7e05 /drivers/block/xsysace.c
parentf4bd4b90bfa86e867111aa182895cb5ac203aa7a (diff)
downloadlinux-2d75ce084eec2a8154225c7e978191b364029003.tar.bz2
xsysace: dequeue in-flight request
xsysace already tracks in-flight request using ace->req. Converting to dequeueing model is mostly a matter of adding dequeueing call after request fetching. The only tricky part is handling CF removal which should complete both in flight and on queue requests. Convert to dequeueing model. While at it, remove explicit blk_rq_cur_bytes() and use __blk_end_request_cur() instead. [ Impact: dequeue in-flight request ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/block/xsysace.c')
-rw-r--r--drivers/block/xsysace.c19
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c
index 97c99b43f881..edf137b6c379 100644
--- a/drivers/block/xsysace.c
+++ b/drivers/block/xsysace.c
@@ -466,7 +466,8 @@ struct request *ace_get_next_request(struct request_queue * q)
while ((req = elv_next_request(q)) != NULL) {
if (blk_fs_request(req))
break;
- __blk_end_request_cur(req, -EIO);
+ blkdev_dequeue_request(req);
+ __blk_end_request_all(req, -EIO);
}
return req;
}
@@ -492,9 +493,15 @@ static void ace_fsm_dostate(struct ace_device *ace)
set_capacity(ace->gd, 0);
dev_info(ace->dev, "No CF in slot\n");
- /* Drop all pending requests */
- while ((req = elv_next_request(ace->queue)) != NULL)
- __blk_end_request_cur(req, -EIO);
+ /* Drop all in-flight and pending requests */
+ if (ace->req) {
+ __blk_end_request_all(ace->req, -EIO);
+ ace->req = NULL;
+ }
+ while ((req = elv_next_request(ace->queue)) != NULL) {
+ blkdev_dequeue_request(req);
+ __blk_end_request_all(req, -EIO);
+ }
/* Drop back to IDLE state and notify waiters */
ace->fsm_state = ACE_FSM_STATE_IDLE;
@@ -642,6 +649,7 @@ static void ace_fsm_dostate(struct ace_device *ace)
ace->fsm_state = ACE_FSM_STATE_IDLE;
break;
}
+ blkdev_dequeue_request(req);
/* Okay, it's a data request, set it up for transfer */
dev_dbg(ace->dev,
@@ -718,8 +726,7 @@ static void ace_fsm_dostate(struct ace_device *ace)
}
/* bio finished; is there another one? */
- if (__blk_end_request(ace->req, 0,
- blk_rq_cur_bytes(ace->req))) {
+ if (__blk_end_request_cur(ace->req, 0)) {
/* dev_dbg(ace->dev, "next block; h=%u c=%u\n",
* blk_rq_sectors(ace->req),
* blk_rq_cur_sectors(ace->req));