---

yaml --- r: 260348 b: refs/heads/master c: 029bcbd h: refs/heads/master v: v3
git-mirror · Jul 26, 2011 · 05ecb16 · 05ecb16
1 parent 8b81d5f
commit 05ecb16
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Showing 2 changed files with 16 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e9852227431a0ed6ceda064f33e4218757acab6c
+refs/heads/master: 029bcbd8b076fd19787b8c73e58dd0a6f2c0caf1
diff --git a/trunk/drivers/block/rbd.c b/trunk/drivers/block/rbd.c
@@ -629,6 +629,14 @@ static int rbd_get_num_segments(struct rbd_image_header *header,
 	return end_seg - start_seg + 1;
 }
 
+/*
+ * returns the size of an object in the image
+ */
+static u64 rbd_obj_bytes(struct rbd_image_header *header)
+{
+	return 1 << header->obj_order;
+}
+
 /*
  * bio helpers
  */
@@ -1765,6 +1773,13 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
 	q = blk_init_queue(rbd_rq_fn, &rbd_dev->lock);
 	if (!q)
 		goto out_disk;
+
+	/* set io sizes to object size */
+	blk_queue_max_hw_sectors(q, rbd_obj_bytes(&rbd_dev->header) / 512ULL);
+	blk_queue_max_segment_size(q, rbd_obj_bytes(&rbd_dev->header));
+	blk_queue_io_min(q, rbd_obj_bytes(&rbd_dev->header));
+	blk_queue_io_opt(q, rbd_obj_bytes(&rbd_dev->header));
+
 	blk_queue_merge_bvec(q, rbd_merge_bvec);
 	disk->queue = q;