X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fblock%2Fnbd.c;h=b53fdb0a282c4858590993bb790a003f3b436372;hb=35d77ef1c05bc3760427954dafaee3ca550542f3;hp=ae3106045ee599d6072b6073fc674061a0d4c4e0;hpb=b7e23d913aafc93fc5f119e1be17620073cc3811;p=linux-2.6

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index ae3106045e..b53fdb0a28 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -54,7 +54,7 @@ static unsigned int debugflags;
 #endif /* NDEBUG */
 
 static unsigned int nbds_max = 16;
-static struct nbd_device nbd_dev[MAX_NBD];
+static struct nbd_device *nbd_dev;
 
 /*
  * Use just one lock (or at most 1 per NIC). Two arguments for this:
@@ -649,14 +649,13 @@ static int __init nbd_init(void)
 
 	BUILD_BUG_ON(sizeof(struct nbd_request) != 28);
 
-	if (nbds_max > MAX_NBD) {
-		printk(KERN_CRIT "nbd: cannot allocate more than %u nbds; %u requested.\n", MAX_NBD,
-				nbds_max);
-		return -EINVAL;
-	}
+	nbd_dev = kcalloc(nbds_max, sizeof(*nbd_dev), GFP_KERNEL);
+	if (!nbd_dev)
+		return -ENOMEM;
 
 	for (i = 0; i < nbds_max; i++) {
 		struct gendisk *disk = alloc_disk(1);
+		elevator_t *old_e;
 		if (!disk)
 			goto out;
 		nbd_dev[i].disk = disk;
@@ -670,6 +669,11 @@ static int __init nbd_init(void)
 			put_disk(disk);
 			goto out;
 		}
+		old_e = disk->queue->elevator;
+		if (elevator_init(disk->queue, "deadline") == 0 ||
+			elevator_init(disk->queue, "noop") == 0) {
+				elevator_exit(old_e);
+		}
 	}
 
 	if (register_blkdev(NBD_MAJOR, "nbd")) {