diff --git a/config/kernel-blk-queue-bdi.m4 b/config/kernel-blk-queue-bdi.m4
new file mode 100644
index 0000000000..816471166a
--- /dev/null
+++ b/config/kernel-blk-queue-bdi.m4
@@ -0,0 +1,20 @@
+dnl #
+dnl # 2.6.32 - 4.11, statically allocated bdi in request_queue
+dnl # 4.12 - x.y, dynamically allocated bdi in request_queue
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_BDI], [
+	AC_MSG_CHECKING([whether blk_queue bdi is dynamic])
+	ZFS_LINUX_TRY_COMPILE([
+		#include <linux/blkdev.h>
+	],[
+		struct request_queue q;
+		struct backing_dev_info bdi;
+		q.backing_dev_info = &bdi;
+	],[
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_BLK_QUEUE_BDI_DYNAMIC, 1,
+		    [blk queue backing_dev_info is dynamic])
+	],[
+		AC_MSG_RESULT(no)
+	])
+])
diff --git a/config/kernel.m4 b/config/kernel.m4
index 638d9e143b..57dad7b3aa 100644
--- a/config/kernel.m4
+++ b/config/kernel.m4
@@ -32,6 +32,7 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
 	ZFS_AC_KERNEL_BIO_END_IO_T_ARGS
 	ZFS_AC_KERNEL_BIO_RW_BARRIER
 	ZFS_AC_KERNEL_BIO_RW_DISCARD
+	ZFS_AC_KERNEL_BLK_QUEUE_BDI
 	ZFS_AC_KERNEL_BLK_QUEUE_FLUSH
 	ZFS_AC_KERNEL_BLK_QUEUE_MAX_HW_SECTORS
 	ZFS_AC_KERNEL_BLK_QUEUE_MAX_SEGMENTS
diff --git a/include/linux/blkdev_compat.h b/include/linux/blkdev_compat.h
index 15824c0b85..822e964a71 100644
--- a/include/linux/blkdev_compat.h
+++ b/include/linux/blkdev_compat.h
@@ -31,6 +31,7 @@
 
 #include <linux/blkdev.h>
 #include <linux/elevator.h>
+#include <linux/backing-dev.h>
 
 #ifndef HAVE_FMODE_T
 typedef unsigned __bitwise__ fmode_t;
@@ -128,6 +129,16 @@ __blk_queue_max_segments(struct request_queue *q, unsigned short max_segments)
 }
 #endif
 
+static inline void
+blk_queue_set_read_ahead(struct request_queue *q, unsigned long ra_pages)
+{
+#ifdef HAVE_BLK_QUEUE_BDI_DYNAMIC
+	q->backing_dev_info->ra_pages = ra_pages;
+#else
+	q->backing_dev_info.ra_pages = ra_pages;
+#endif
+}
+
 #ifndef HAVE_GET_DISK_RO
 static inline int
 get_disk_ro(struct gendisk *disk)
diff --git a/module/zfs/zvol.c b/module/zfs/zvol.c
index d0f7b9912b..fef1d299a0 100644
--- a/module/zfs/zvol.c
+++ b/module/zfs/zvol.c
@@ -1468,6 +1468,9 @@ zvol_alloc(dev_t dev, const char *name)
 	blk_queue_make_request(zv->zv_queue, zvol_request);
 	blk_queue_set_write_cache(zv->zv_queue, B_TRUE, B_TRUE);
 
+	/* Limit read-ahead to a single page to prevent over-prefetching. */
+	blk_queue_set_read_ahead(zv->zv_queue, 1);
+
 	/* Disable write merging in favor of the ZIO pipeline. */
 	queue_flag_set(QUEUE_FLAG_NOMERGES, zv->zv_queue);