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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2010-07-03 17:45:38 +0900 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2010-08-07 18:24:14 +0200 |
| commit | dd40e456a40ebb87330b7fc694359ce52f1996aa (patch) | |
| tree | d5d1bea7f754e54b1cc9c975652bc4dfa714991f /drivers | |
| parent | 144d6ed551ce430084489b198826c89bac5680dc (diff) | |
| download | linux-dd40e456a40ebb87330b7fc694359ce52f1996aa.tar.gz linux-dd40e456a40ebb87330b7fc694359ce52f1996aa.tar.bz2 linux-dd40e456a40ebb87330b7fc694359ce52f1996aa.zip | |
virtio_blk: stop using q->prepare_flush_fn
use REQ_FLUSH flag instead.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/virtio_blk.c | 50 |
1 files changed, 21 insertions, 29 deletions
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index b5ebcd33bdb6..b277f9e6abac 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -99,33 +99,32 @@ static bool do_req(struct request_queue *q, struct virtio_blk *vblk, return false; vbr->req = req; - switch (req->cmd_type) { - case REQ_TYPE_FS: - vbr->out_hdr.type = 0; - vbr->out_hdr.sector = blk_rq_pos(vbr->req); - vbr->out_hdr.ioprio = req_get_ioprio(vbr->req); - break; - case REQ_TYPE_BLOCK_PC: - vbr->out_hdr.type = VIRTIO_BLK_T_SCSI_CMD; - vbr->out_hdr.sector = 0; - vbr->out_hdr.ioprio = req_get_ioprio(vbr->req); - break; - case REQ_TYPE_SPECIAL: - vbr->out_hdr.type = VIRTIO_BLK_T_GET_ID; + + if (req->cmd_flags & REQ_FLUSH) { + vbr->out_hdr.type = VIRTIO_BLK_T_FLUSH; vbr->out_hdr.sector = 0; vbr->out_hdr.ioprio = req_get_ioprio(vbr->req); - break; - case REQ_TYPE_LINUX_BLOCK: - if (req->cmd[0] == REQ_LB_OP_FLUSH) { - vbr->out_hdr.type = VIRTIO_BLK_T_FLUSH; + } else { + switch (req->cmd_type) { + case REQ_TYPE_FS: + vbr->out_hdr.type = 0; + vbr->out_hdr.sector = blk_rq_pos(vbr->req); + vbr->out_hdr.ioprio = req_get_ioprio(vbr->req); + break; + case REQ_TYPE_BLOCK_PC: + vbr->out_hdr.type = VIRTIO_BLK_T_SCSI_CMD; vbr->out_hdr.sector = 0; vbr->out_hdr.ioprio = req_get_ioprio(vbr->req); break; + case REQ_TYPE_SPECIAL: + vbr->out_hdr.type = VIRTIO_BLK_T_GET_ID; + vbr->out_hdr.sector = 0; + vbr->out_hdr.ioprio = req_get_ioprio(vbr->req); + break; + default: + /* We don't put anything else in the queue. */ + BUG(); } - /*FALLTHRU*/ - default: - /* We don't put anything else in the queue. */ - BUG(); } if (vbr->req->cmd_flags & REQ_HARDBARRIER) @@ -195,12 +194,6 @@ static void do_virtblk_request(struct request_queue *q) virtqueue_kick(vblk->vq); } -static void virtblk_prepare_flush(struct request_queue *q, struct request *req) -{ - req->cmd_type = REQ_TYPE_LINUX_BLOCK; - req->cmd[0] = REQ_LB_OP_FLUSH; -} - /* return id (s/n) string for *disk to *id_str */ static int virtblk_get_id(struct gendisk *disk, char *id_str) @@ -373,8 +366,7 @@ static int __devinit virtblk_probe(struct virtio_device *vdev) /* If barriers are supported, tell block layer that queue is ordered */ if (virtio_has_feature(vdev, VIRTIO_BLK_F_FLUSH)) - blk_queue_ordered(q, QUEUE_ORDERED_DRAIN_FLUSH, - virtblk_prepare_flush); + blk_queue_ordered(q, QUEUE_ORDERED_DRAIN_FLUSH, NULL); else if (virtio_has_feature(vdev, VIRTIO_BLK_F_BARRIER)) blk_queue_ordered(q, QUEUE_ORDERED_TAG, NULL); |