1 files changed, 7 insertions, 6 deletions

diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index 014a1cfc41c5..1b8094d4d7af 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -393,14 +393,15 @@ config BLK_DEV_RAM_SIZE
           The default value is 4096 kilobytes. Only change this if you know
           what you are doing.
 
-config BLK_DEV_XIP
-        bool "Support XIP filesystems on RAM block device"
-        depends on BLK_DEV_RAM
+config BLK_DEV_RAM_DAX
+        bool "Support Direct Access (DAX) to RAM block devices"
+        depends on BLK_DEV_RAM && FS_DAX
         default n
         help
-          Support XIP filesystems (such as ext2 with XIP support on) on
-          top of block ram device. This will slightly enlarge the kernel, and
-          will prevent RAM block device backing store memory from being
+          Support filesystems using DAX to access RAM block devices.  This
+          avoids double-buffering data in the page cache before copying it
+          to the block device.  Answering Y will slightly enlarge the kernel,
+          and will prevent RAM block device backing store memory from being
           allocated from highmem (only a problem for highmem systems).
 
 config CDROM_PKTCDVD