config BLK_DEV_RAM
tristate "RAM block device support"
- select DAX if BLK_DEV_RAM_DAX
---help---
Saying Y here will allow you to use a portion of your RAM memory as
a block device, so that you can make file systems on it, read and
The default value is 4096 kilobytes. Only change this if you know
what you are doing.
-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 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
tristate "Packet writing on CD/DVD media (DEPRECATED)"
depends on !UML