提交 23430468 编写于 作者: T Tejun Heo 提交者: Jens Axboe

gdrom: dequeue in-flight request

gdrom already dequeues and fully completes requests on normal path and
the error paths can be easily converted to do so too.  Clean it up and
dequeue requests on error paths too.

While at it remove superflous blk_fs_request() && !blk_rq_sectors()
condition check.

[ Impact: dequeue in-flight request, cleanup ]
Signed-off-by: NTejun Heo <tj@kernel.org>
Cc: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
上级 296b2f6a
......@@ -638,33 +638,31 @@ static void gdrom_readdisk_dma(struct work_struct *work)
kfree(read_command);
}
static void gdrom_request_handler_dma(struct request *req)
{
/* dequeue, add to list of deferred work
* and then schedule workqueue */
blkdev_dequeue_request(req);
list_add_tail(&req->queuelist, &gdrom_deferred);
schedule_work(&work);
}
static void gdrom_request(struct request_queue *rq)
{
struct request *req;
while ((req = elv_next_request(rq)) != NULL) {
blkdev_dequeue_request(req);
if (!blk_fs_request(req)) {
printk(KERN_DEBUG "GDROM: Non-fs request ignored\n");
__blk_end_request_cur(req, -EIO);
__blk_end_request_all(req, -EIO);
continue;
}
if (rq_data_dir(req) != READ) {
printk(KERN_NOTICE "GDROM: Read only device -");
printk(" write request ignored\n");
__blk_end_request_cur(req, -EIO);
__blk_end_request_all(req, -EIO);
continue;
}
if (blk_rq_sectors(req))
gdrom_request_handler_dma(req);
else
__blk_end_request_cur(req, -EIO);
/*
* Add to list of deferred work and then schedule
* workqueue.
*/
list_add_tail(&req->queuelist, &gdrom_deferred);
schedule_work(&work);
}
}
......
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