On 04/01/2012 06:07 PM, Michael S. Tsirkin wrote:
On Fri, Mar 30, 2012 at 11:24:10AM +0800, Asias He wrote:Benchmark shows small performance improvement on fusion io device. Before: seq-read : io=1,024MB, bw=19,982KB/s, iops=39,964, runt= 52475msec seq-write: io=1,024MB, bw=20,321KB/s, iops=40,641, runt= 51601msec rnd-read : io=1,024MB, bw=15,404KB/s, iops=30,808, runt= 68070msec rnd-write: io=1,024MB, bw=14,776KB/s, iops=29,552, runt= 70963msec After: seq-read : io=1,024MB, bw=20,343KB/s, iops=40,685, runt= 51546msec seq-write: io=1,024MB, bw=20,803KB/s, iops=41,606, runt= 50404msec rnd-read : io=1,024MB, bw=16,221KB/s, iops=32,442, runt= 64642msec rnd-write: io=1,024MB, bw=15,199KB/s, iops=30,397, runt= 68991msec Signed-off-by: Asias He<asias@xxxxxxxxxx>Thanks, the patch makes sense to me. Acked-by: Michael S. Tsirkin<mst@xxxxxxxxxx> This is 3.5 material, correct?
Yes, I think so.
--- drivers/block/virtio_blk.c | 10 ---------- 1 files changed, 0 insertions(+), 10 deletions(-) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index c4a60ba..338da9a 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -29,9 +29,6 @@ struct virtio_blk /* The disk structure for the kernel. */ struct gendisk *disk; - /* Request tracking. */ - struct list_head reqs; - mempool_t *pool; /* Process context for config space updates */ @@ -55,7 +52,6 @@ struct virtio_blk struct virtblk_req { - struct list_head list; struct request *req; struct virtio_blk_outhdr out_hdr; struct virtio_scsi_inhdr in_hdr; @@ -99,7 +95,6 @@ static void blk_done(struct virtqueue *vq) } __blk_end_request_all(vbr->req, error); - list_del(&vbr->list); mempool_free(vbr, vblk->pool); } /* In case queue is stopped waiting for more buffers. */ @@ -184,7 +179,6 @@ static bool do_req(struct request_queue *q, struct virtio_blk *vblk, return false; } - list_add_tail(&vbr->list,&vblk->reqs); return true; } @@ -408,7 +402,6 @@ static int __devinit virtblk_probe(struct virtio_device *vdev) goto out_free_index; } - INIT_LIST_HEAD(&vblk->reqs); spin_lock_init(&vblk->lock); vblk->vdev = vdev; vblk->sg_elems = sg_elems; @@ -571,9 +564,6 @@ static void __devexit virtblk_remove(struct virtio_device *vdev) vblk->config_enable = false; mutex_unlock(&vblk->config_lock); - /* Nothing should be pending. */ - BUG_ON(!list_empty(&vblk->reqs)); - /* Stop all the virtqueues. */ vdev->config->reset(vdev); -- 1.7.7.6-- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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