From 6b0bf407b586b6ba8e060ad9979cb2bc3370b7eb Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 8 May 2009 11:54:12 +0900 Subject: jsflash: dequeue in-flight request jsflash processes requests one-by-one synchronously from a kthread and can be easily converted to dequeueing model. Convert it. [ Impact: dequeue in-flight request ] Signed-off-by: Tejun Heo Cc: Pete Zaitcev Signed-off-by: Jens Axboe --- drivers/sbus/char/jsflash.c | 28 +++++++++++++++++----------- 1 file changed, 17 insertions(+), 11 deletions(-) diff --git a/drivers/sbus/char/jsflash.c b/drivers/sbus/char/jsflash.c index d56ddaa77036..f572a4a1d141 100644 --- a/drivers/sbus/char/jsflash.c +++ b/drivers/sbus/char/jsflash.c @@ -186,31 +186,37 @@ static void jsfd_do_request(struct request_queue *q) { struct request *req; - while ((req = elv_next_request(q)) != NULL) { + req = elv_next_request(q); + if (req) + blkdev_dequeue_request(req); + + while (req) { struct jsfd_part *jdp = req->rq_disk->private_data; unsigned long offset = blk_rq_pos(req) << 9; size_t len = blk_rq_cur_bytes(req); + int err = -EIO; - if ((offset + len) > jdp->dsize) { - __blk_end_request_cur(req, -EIO); - continue; - } + if ((offset + len) > jdp->dsize) + goto end; if (rq_data_dir(req) != READ) { printk(KERN_ERR "jsfd: write\n"); - __blk_end_request_cur(req, -EIO); - continue; + goto end; } if ((jdp->dbase & 0xff000000) != 0x20000000) { printk(KERN_ERR "jsfd: bad base %x\n", (int)jdp->dbase); - __blk_end_request_cur(req, -EIO); - continue; + goto end; } jsfd_read(req->buffer, jdp->dbase + offset, len); - - __blk_end_request_cur(req, 0); + err = 0; + end: + if (!__blk_end_request_cur(req, err)) { + req = elv_next_request(q); + if (req) + blkdev_dequeue_request(req); + } } } -- cgit v1.2.2