X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=module%2Fzfs%2Fzvol.c;h=c3bd25c3b610be4ea1a63f7ade350fa51bbedc12;hb=7bd04f2d7d99780f190d4027e6e81fc0df11ba95;hp=b07476c4208507cbb9849a0317f51a4a6f1b7d71;hpb=089fa91bc51dc10da5a75a6d9fff77f186fccb23;p=zfs.git

diff --git a/module/zfs/zvol.c b/module/zfs/zvol.c
index b07476c..c3bd25c 100644
--- a/module/zfs/zvol.c
+++ b/module/zfs/zvol.c
@@ -1159,6 +1159,7 @@ static zvol_state_t *
 zvol_alloc(dev_t dev, const char *name)
 {
 	zvol_state_t *zv;
+	int error = 0;
 
 	zv = kmem_zalloc(sizeof (zvol_state_t), KM_SLEEP);
 	if (zv == NULL)
@@ -1168,6 +1169,15 @@ zvol_alloc(dev_t dev, const char *name)
 	if (zv->zv_queue == NULL)
 		goto out_kmem;
 
+#ifdef HAVE_ELEVATOR_CHANGE
+	error = elevator_change(zv->zv_queue, "noop");
+#endif /* HAVE_ELEVATOR_CHANGE */
+	if (error) {
+		printk("ZFS: Unable to set \"%s\" scheduler for zvol %s: %d\n",
+		    "noop", name, error);
+		goto out_queue;
+	}
+
 #ifdef HAVE_BLK_QUEUE_FLUSH
 	blk_queue_flush(zv->zv_queue, VDEV_REQ_FLUSH | VDEV_REQ_FUA);
 #else