Displaying 3 results from an estimated 3 matches for "queue_flag_cluster".
2008 Nov 14
2
[PATCH RFC] virtio: use QUEUE_FLAG_CLUSTER in virtio_blk
...}
@@ -260,6 +271,9 @@
/* If barriers are supported, tell block layer that queue is ordered */
if (virtio_has_feature(vdev, VIRTIO_BLK_F_BARRIER))
blk_queue_ordered(vblk->disk->queue, QUEUE_ORDERED_TAG, NULL);
+
+ /* Gather adjacent buffers to minimize sg length. */
+ queue_flag_set(QUEUE_FLAG_CLUSTER, vblk->disk->queue);
/* If disk is read-only in the host, the guest should obey */
if (virtio_has_feature(vdev, VIRTIO_BLK_F_RO))
2008 Nov 14
2
[PATCH RFC] virtio: use QUEUE_FLAG_CLUSTER in virtio_blk
...}
@@ -260,6 +271,9 @@
/* If barriers are supported, tell block layer that queue is ordered */
if (virtio_has_feature(vdev, VIRTIO_BLK_F_BARRIER))
blk_queue_ordered(vblk->disk->queue, QUEUE_ORDERED_TAG, NULL);
+
+ /* Gather adjacent buffers to minimize sg length. */
+ queue_flag_set(QUEUE_FLAG_CLUSTER, vblk->disk->queue);
/* If disk is read-only in the host, the guest should obey */
if (virtio_has_feature(vdev, VIRTIO_BLK_F_RO))
2007 Jan 02
0
[PATCH 1/4] add scsi-target and IO_CMD_EPOLL_WAIT patches
...host->max_sectors);
+ blk_queue_bounce_limit(q, scsi_calculate_bounce_limit(shost));
+ blk_queue_segment_boundary(q, shost->dma_boundary);
+- blk_queue_issue_flush_fn(q, scsi_issue_flush_fn);
+- blk_queue_softirq_done(q, scsi_softirq_done);
+
+ if (!shost->use_clustering)
+ clear_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags);
+ return q;
+ }
++EXPORT_SYMBOL(__scsi_alloc_queue);
++
++struct request_queue *scsi_alloc_queue(struct scsi_device *sdev)
++{
++ struct request_queue *q;
++
++ q = __scsi_alloc_queue(sdev->host, scsi_request_fn);
++ if (!q)
++ return NULL;
++
++ blk_queue_prep_rq(q,...