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+#
+# Block device driver configuration
+#
+
+menuconfig BLK_DEV
+	bool "Block devices"
+	depends on BLOCK
+	default y
+	---help---
+	  Say Y here to get to see options for various different block device
+	  drivers. This option alone does not add any kernel code.
+
+	  If you say N, all options in this submenu will be skipped and disabled;
+	  only do this if you know what you are doing.
+
+if BLK_DEV
+
+config BLK_DEV_NULL_BLK
+	tristate "Null test block driver"
+
+config BLK_DEV_FD
+	tristate "Normal floppy disk support"
+	depends on ARCH_MAY_HAVE_PC_FDC
+	---help---
+	  If you want to use the floppy disk drive(s) of your PC under Linux,
+	  say Y. Information about this driver, especially important for IBM
+	  Thinkpad users, is contained in
+	  <file:Documentation/blockdev/floppy.txt>.
+	  That file also contains the location of the Floppy driver FAQ as
+	  well as location of the fdutils package used to configure additional
+	  parameters of the driver at run time.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called floppy.
+
+config AMIGA_FLOPPY
+	tristate "Amiga floppy support"
+	depends on AMIGA
+
+config ATARI_FLOPPY
+	tristate "Atari floppy support"
+	depends on ATARI
+
+config MAC_FLOPPY
+	tristate "Support for PowerMac floppy"
+	depends on PPC_PMAC && !PPC_PMAC64
+	help
+	  If you have a SWIM-3 (Super Woz Integrated Machine 3; from Apple)
+	  floppy controller, say Y here. Most commonly found in PowerMacs.
+
+config BLK_DEV_SWIM
+	tristate "Support for SWIM Macintosh floppy"
+	depends on M68K && MAC
+	help
+	  You should select this option if you want floppy support
+	  and you don't have a II, IIfx, Q900, Q950 or AV series.
+
+config AMIGA_Z2RAM
+	tristate "Amiga Zorro II ramdisk support"
+	depends on ZORRO
+	help
+	  This enables support for using Chip RAM and Zorro II RAM as a
+	  ramdisk or as a swap partition. Say Y if you want to include this
+	  driver in the kernel.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called z2ram.
+
+config GDROM
+	tristate "SEGA Dreamcast GD-ROM drive"
+	depends on SH_DREAMCAST
+	help
+	  A standard SEGA Dreamcast comes with a modified CD ROM drive called a
+	  "GD-ROM" by SEGA to signify it is capable of reading special disks
+	  with up to 1 GB of data. This drive will also read standard CD ROM
+	  disks. Select this option to access any disks in your GD ROM drive.
+	  Most users will want to say "Y" here.
+	  You can also build this as a module which will be called gdrom.
+
+config PARIDE
+	tristate "Parallel port IDE device support"
+	depends on PARPORT_PC
+	---help---
+	  There are many external CD-ROM and disk devices that connect through
+	  your computer's parallel port. Most of them are actually IDE devices
+	  using a parallel port IDE adapter. This option enables the PARIDE
+	  subsystem which contains drivers for many of these external drives.
+	  Read <file:Documentation/blockdev/paride.txt> for more information.
+
+	  If you have said Y to the "Parallel-port support" configuration
+	  option, you may share a single port between your printer and other
+	  parallel port devices. Answer Y to build PARIDE support into your
+	  kernel, or M if you would like to build it as a loadable module. If
+	  your parallel port support is in a loadable module, you must build
+	  PARIDE as a module. If you built PARIDE support into your kernel,
+	  you may still build the individual protocol modules and high-level
+	  drivers as loadable modules. If you build this support as a module,
+	  it will be called paride.
+
+	  To use the PARIDE support, you must say Y or M here and also to at
+	  least one high-level driver (e.g. "Parallel port IDE disks",
+	  "Parallel port ATAPI CD-ROMs", "Parallel port ATAPI disks" etc.) and
+	  to at least one protocol driver (e.g. "ATEN EH-100 protocol",
+	  "MicroSolutions backpack protocol", "DataStor Commuter protocol"
+	  etc.).
+
+source "drivers/block/paride/Kconfig"
+
+source "drivers/block/mtip32xx/Kconfig"
+
+source "drivers/block/zram/Kconfig"
+
+config BLK_CPQ_DA
+	tristate "Compaq SMART2 support"
+	depends on PCI && VIRT_TO_BUS && 0
+	help
+	  This is the driver for Compaq Smart Array controllers.  Everyone
+	  using these boards should say Y here.  See the file
+	  <file:Documentation/blockdev/cpqarray.txt> for the current list of
+	  boards supported by this driver, and for further information on the
+	  use of this driver.
+
+config BLK_CPQ_CISS_DA
+	tristate "Compaq Smart Array 5xxx support"
+	depends on PCI
+	select CHECK_SIGNATURE
+	help
+	  This is the driver for Compaq Smart Array 5xxx controllers.
+	  Everyone using these boards should say Y here.
+	  See <file:Documentation/blockdev/cciss.txt> for the current list of
+	  boards supported by this driver, and for further information
+	  on the use of this driver.
+
+config CISS_SCSI_TAPE
+	bool "SCSI tape drive support for Smart Array 5xxx"
+	depends on BLK_CPQ_CISS_DA && PROC_FS
+	depends on SCSI=y || SCSI=BLK_CPQ_CISS_DA
+	help
+	  When enabled (Y), this option allows SCSI tape drives and SCSI medium
+	  changers (tape robots) to be accessed via a Compaq 5xxx array 
+	  controller.  (See <file:Documentation/blockdev/cciss.txt> for more details.)
+
+	  "SCSI support" and "SCSI tape support" must also be enabled for this 
+	  option to work.
+
+	  When this option is disabled (N), the SCSI portion of the driver 
+	  is not compiled.
+
+config BLK_DEV_DAC960
+	tristate "Mylex DAC960/DAC1100 PCI RAID Controller support"
+	depends on PCI
+	help
+	  This driver adds support for the Mylex DAC960, AcceleRAID, and
+	  eXtremeRAID PCI RAID controllers.  See the file
+	  <file:Documentation/blockdev/README.DAC960> for further information
+	  about this driver.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called DAC960.
+
+config BLK_DEV_UMEM
+	tristate "Micro Memory MM5415 Battery Backed RAM support"
+	depends on PCI
+	---help---
+	  Saying Y here will include support for the MM5415 family of
+	  battery backed (Non-volatile) RAM cards.
+	  <http://www.umem.com/>
+
+	  The cards appear as block devices that can be partitioned into
+	  as many as 15 partitions.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called umem.
+
+	  The umem driver has not yet been allocated a MAJOR number, so
+	  one is chosen dynamically.
+
+config BLK_DEV_UBD
+	bool "Virtual block device"
+	depends on UML
+	---help---
+          The User-Mode Linux port includes a driver called UBD which will let
+          you access arbitrary files on the host computer as block devices.
+          Unless you know that you do not need such virtual block devices say
+          Y here.
+
+config BLK_DEV_UBD_SYNC
+	bool "Always do synchronous disk IO for UBD"
+	depends on BLK_DEV_UBD
+	---help---
+	  Writes to the virtual block device are not immediately written to the
+	  host's disk; this may cause problems if, for example, the User-Mode
+	  Linux 'Virtual Machine' uses a journalling filesystem and the host
+	  computer crashes.
+
+          Synchronous operation (i.e. always writing data to the host's disk
+          immediately) is configurable on a per-UBD basis by using a special
+          kernel command line option.  Alternatively, you can say Y here to
+          turn on synchronous operation by default for all block devices.
+
+          If you're running a journalling file system (like reiserfs, for
+          example) in your virtual machine, you will want to say Y here.  If
+          you care for the safety of the data in your virtual machine, Y is a
+          wise choice too.  In all other cases (for example, if you're just
+          playing around with User-Mode Linux) you can choose N.
+
+config BLK_DEV_COW_COMMON
+	bool
+	default BLK_DEV_UBD
+
+config BLK_DEV_LOOP
+	tristate "Loopback device support"
+	---help---
+	  Saying Y here will allow you to use a regular file as a block
+	  device; you can then create a file system on that block device and
+	  mount it just as you would mount other block devices such as hard
+	  drive partitions, CD-ROM drives or floppy drives. The loop devices
+	  are block special device files with major number 7 and typically
+	  called /dev/loop0, /dev/loop1 etc.
+
+	  This is useful if you want to check an ISO 9660 file system before
+	  burning the CD, or if you want to use floppy images without first
+	  writing them to floppy. Furthermore, some Linux distributions avoid
+	  the need for a dedicated Linux partition by keeping their complete
+	  root file system inside a DOS FAT file using this loop device
+	  driver.
+
+	  To use the loop device, you need the losetup utility, found in the
+	  util-linux package, see
+	  <ftp://ftp.kernel.org/pub/linux/utils/util-linux/>.
+
+	  The loop device driver can also be used to "hide" a file system in
+	  a disk partition, floppy, or regular file, either using encryption
+	  (scrambling the data) or steganography (hiding the data in the low
+	  bits of, say, a sound file). This is also safe if the file resides
+	  on a remote file server.
+
+	  There are several ways of encrypting disks. Some of these require
+	  kernel patches. The vanilla kernel offers the cryptoloop option
+	  and a Device Mapper target (which is superior, as it supports all
+	  file systems). If you want to use the cryptoloop, say Y to both
+	  LOOP and CRYPTOLOOP, and make sure you have a recent (version 2.12
+	  or later) version of util-linux. Additionally, be aware that
+	  the cryptoloop is not safe for storing journaled filesystems.
+
+	  Note that this loop device has nothing to do with the loopback
+	  device used for network connections from the machine to itself.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called loop.
+
+	  Most users will answer N here.
+
+config BLK_DEV_LOOP_MIN_COUNT
+	int "Number of loop devices to pre-create at init time"
+	depends on BLK_DEV_LOOP
+	default 8
+	help
+	  Static number of loop devices to be unconditionally pre-created
+	  at init time.
+
+	  This default value can be overwritten on the kernel command
+	  line or with module-parameter loop.max_loop.
+
+	  The historic default is 8. If a late 2011 version of losetup(8)
+	  is used, it can be set to 0, since needed loop devices can be
+	  dynamically allocated with the /dev/loop-control interface.
+
+config BLK_DEV_CRYPTOLOOP
+	tristate "Cryptoloop Support"
+	select CRYPTO
+	select CRYPTO_CBC
+	depends on BLK_DEV_LOOP
+	---help---
+	  Say Y here if you want to be able to use the ciphers that are 
+	  provided by the CryptoAPI as loop transformation. This might be
+	  used as hard disk encryption.
+
+	  WARNING: This device is not safe for journaled file systems like
+	  ext3 or Reiserfs. Please use the Device Mapper crypto module
+	  instead, which can be configured to be on-disk compatible with the
+	  cryptoloop device.
+
+source "drivers/block/drbd/Kconfig"
+
+config BLK_DEV_NBD
+	tristate "Network block device support"
+	depends on NET
+	---help---
+	  Saying Y here will allow your computer to be a client for network
+	  block devices, i.e. it will be able to use block devices exported by
+	  servers (mount file systems on them etc.). Communication between
+	  client and server works over TCP/IP networking, but to the client
+	  program this is hidden: it looks like a regular local file access to
+	  a block device special file such as /dev/nd0.
+
+	  Network block devices also allows you to run a block-device in
+	  userland (making server and client physically the same computer,
+	  communicating using the loopback network device).
+
+	  Read <file:Documentation/blockdev/nbd.txt> for more information,
+	  especially about where to find the server code, which runs in user
+	  space and does not need special kernel support.
+
+	  Note that this has nothing to do with the network file systems NFS
+	  or Coda; you can say N here even if you intend to use NFS or Coda.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called nbd.
+
+	  If unsure, say N.
+
+config BLK_DEV_NVME
+	tristate "NVM Express block device"
+	depends on PCI
+	---help---
+	  The NVM Express driver is for solid state drives directly
+	  connected to the PCI or PCI Express bus.  If you know you
+	  don't have one of these, it is safe to answer N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called nvme.
+
+config BLK_DEV_SKD
+	tristate "STEC S1120 Block Driver"
+	depends on PCI
+	depends on 64BIT
+	---help---
+	Saying Y or M here will enable support for the
+	STEC, Inc. S1120 PCIe SSD.
+
+	Use device /dev/skd$N amd /dev/skd$Np$M.
+
+config BLK_DEV_OSD
+	tristate "OSD object-as-blkdev support"
+	depends on SCSI_OSD_ULD
+	---help---
+	  Saying Y or M here will allow the exporting of a single SCSI
+	  OSD (object-based storage) object as a Linux block device.
+
+	  For example, if you create a 2G object on an OSD device,
+	  you can then use this module to present that 2G object as
+	  a Linux block device.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called osdblk.
+
+	  If unsure, say N.
+
+config BLK_DEV_SX8
+	tristate "Promise SATA SX8 support"
+	depends on PCI
+	---help---
+	  Saying Y or M here will enable support for the 
+	  Promise SATA SX8 controllers.
+
+	  Use devices /dev/sx8/$N and /dev/sx8/$Np$M.
+
+config BLK_DEV_RAM
+	tristate "RAM block device support"
+	---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
+	  write to it and do all the other things that you can do with normal
+	  block devices (such as hard drives). It is usually used to load and
+	  store a copy of a minimal root file system off of a floppy into RAM
+	  during the initial install of Linux.
+
+	  Note that the kernel command line option "ramdisk=XX" is now obsolete.
+	  For details, read <file:Documentation/blockdev/ramdisk.txt>.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called brd. An alias "rd" has been defined
+	  for historical reasons.
+
+	  Most normal users won't need the RAM disk functionality, and can
+	  thus say N here.
+
+config BLK_DEV_RAM_COUNT
+	int "Default number of RAM disks"
+	default "16"
+	depends on BLK_DEV_RAM
+	help
+	  The default value is 16 RAM disks. Change this if you know what you
+	  are doing. If you boot from a filesystem that needs to be extracted
+	  in memory, you will need at least one RAM disk (e.g. root on cramfs).
+
+config BLK_DEV_RAM_SIZE
+	int "Default RAM disk size (kbytes)"
+	depends on BLK_DEV_RAM
+	default "4096"
+	help
+	  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 BLK_DEV_PMEM
+	tristate "Persistent memory block device support"
+	depends on HAS_IOMEM
+	help
+	  Saying Y here will allow you to use a contiguous range of reserved
+	  memory as one or more persistent block devices.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called 'pmem'.
+
+	  If unsure, say N.
+
+config CDROM_PKTCDVD
+	tristate "Packet writing on CD/DVD media"
+	depends on !UML
+	help
+	  If you have a CDROM/DVD drive that supports packet writing, say
+	  Y to include support. It should work with any MMC/Mt Fuji
+	  compliant ATAPI or SCSI drive, which is just about any newer
+	  DVD/CD writer.
+
+	  Currently only writing to CD-RW, DVD-RW, DVD+RW and DVDRAM discs
+	  is possible.
+	  DVD-RW disks must be in restricted overwrite mode.
+
+	  See the file <file:Documentation/cdrom/packet-writing.txt>
+	  for further information on the use of this driver.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called pktcdvd.
+
+config CDROM_PKTCDVD_BUFFERS
+	int "Free buffers for data gathering"
+	depends on CDROM_PKTCDVD
+	default "8"
+	help
+	  This controls the maximum number of active concurrent packets. More
+	  concurrent packets can increase write performance, but also require
+	  more memory. Each concurrent packet will require approximately 64Kb
+	  of non-swappable kernel memory, memory which will be allocated when
+	  a disc is opened for writing.
+
+config CDROM_PKTCDVD_WCACHE
+	bool "Enable write caching"
+	depends on CDROM_PKTCDVD
+	help
+	  If enabled, write caching will be set for the CD-R/W device. For now
+	  this option is dangerous unless the CD-RW media is known good, as we
+	  don't do deferred write error handling yet.
+
+config ATA_OVER_ETH
+	tristate "ATA over Ethernet support"
+	depends on NET
+	help
+	This driver provides Support for ATA over Ethernet block
+	devices like the Coraid EtherDrive (R) Storage Blade.
+
+config MG_DISK
+	tristate "mGine mflash, gflash support"
+	depends on ARM && GPIOLIB
+	help
+	  mGine mFlash(gFlash) block device driver
+
+config MG_DISK_RES
+	int "Size of reserved area before MBR"
+	depends on MG_DISK
+	default 0
+	help
+	  Define size of reserved area that usually used for boot. Unit is KB.
+	  All of the block device operation will be taken this value as start
+	  offset
+	  Examples:
+			1024 => 1 MB
+
+config SUNVDC
+	tristate "Sun Virtual Disk Client support"
+	depends on SUN_LDOMS
+	help
+	  Support for virtual disk devices as a client under Sun
+	  Logical Domains.
+
+source "drivers/s390/block/Kconfig"
+
+config XILINX_SYSACE
+	tristate "Xilinx SystemACE support"
+	depends on 4xx || MICROBLAZE
+	help
+	  Include support for the Xilinx SystemACE CompactFlash interface
+
+config XEN_BLKDEV_FRONTEND
+	tristate "Xen virtual block device support"
+	depends on XEN
+	default y
+	select XEN_XENBUS_FRONTEND
+	help
+	  This driver implements the front-end of the Xen virtual
+	  block device driver.  It communicates with a back-end driver
+	  in another domain which drives the actual block device.
+
+config XEN_BLKDEV_BACKEND
+	tristate "Xen block-device backend driver"
+	depends on XEN_BACKEND
+	help
+	  The block-device backend driver allows the kernel to export its
+	  block devices to other guests via a high-performance shared-memory
+	  interface.
+
+	  The corresponding Linux frontend driver is enabled by the
+	  CONFIG_XEN_BLKDEV_FRONTEND configuration option.
+
+	  The backend driver attaches itself to a any block device specified
+	  in the XenBus configuration. There are no limits to what the block
+	  device as long as it has a major and minor.
+
+	  If you are compiling a kernel to run in a Xen block backend driver
+	  domain (often this is domain 0) you should say Y here. To
+	  compile this driver as a module, chose M here: the module
+	  will be called xen-blkback.
+
+
+config VIRTIO_BLK
+	tristate "Virtio block driver"
+	depends on VIRTIO
+	---help---
+	  This is the virtual block driver for virtio.  It can be used with
+          lguest or QEMU based VMMs (like KVM or Xen).  Say Y or M.
+
+config BLK_DEV_HD
+	bool "Very old hard disk (MFM/RLL/IDE) driver"
+	depends on HAVE_IDE
+	depends on !ARM || ARCH_RPC || BROKEN
+	help
+	  This is a very old hard disk driver that lacks the enhanced
+	  functionality of the newer ones.
+
+	  It is required for systems with ancient MFM/RLL/ESDI drives.
+
+	  If unsure, say N.
+
+config BLK_DEV_RBD
+	tristate "Rados block device (RBD)"
+	depends on INET && BLOCK
+	select CEPH_LIB
+	select LIBCRC32C
+	select CRYPTO_AES
+	select CRYPTO
+	default n
+	help
+	  Say Y here if you want include the Rados block device, which stripes
+	  a block device over objects stored in the Ceph distributed object
+	  store.
+
+	  More information at http://ceph.newdream.net/.
+
+	  If unsure, say N.
+
+config BLK_DEV_RSXX
+	tristate "IBM Flash Adapter 900GB Full Height PCIe Device Driver"
+	depends on PCI
+	help
+	  Device driver for IBM's high speed PCIe SSD
+	  storage device: Flash Adapter 900GB Full Height.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called rsxx.
+
+endif # BLK_DEV