Create/use more directory structure in the Documentation/ tree.

Create Documentation/blockdev/ sub-directory and populate it.
Populate the Documentation/serial/ sub-directory.
Move MSI-HOWTO.txt to Documentation/PCI/.
Move ioctl-number.txt to Documentation/ioctl/.
Update all relevant 00-INDEX files.
Update all relevant Kconfig files and source files.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>

Documentation/00-INDEX

@@ -42,14 +42,8 @@ IRQ.txt
 	- description of what an IRQ is.
 ManagementStyle
 	- how to (attempt to) manage kernel hackers.
-MSI-HOWTO.txt
-	- the Message Signaled Interrupts (MSI) Driver Guide HOWTO and FAQ.
 RCU/
 	- directory with info on RCU (read-copy update).
-README.DAC960
-	- info on Mylex DAC960/DAC1100 PCI RAID Controller Driver for Linux.
-README.cycladesZ
-	- info on Cyclades-Z firmware loading.
 SAK.txt
 	- info on Secure Attention Keys.
 SM501.txt
@@ -86,20 +80,16 @@ blackfin/
 	- directory with documentation for the Blackfin arch.
 block/
 	- info on the Block I/O (BIO) layer.
+blockdev/
+	- info on block devices & drivers
 cachetlb.txt
 	- describes the cache/TLB flushing interfaces Linux uses.
-cciss.txt
-	- info, major/minor #'s for Compaq's SMART Array Controllers.
 cdrom/
 	- directory with information on the CD-ROM drivers that Linux has.
-computone.txt
-	- info on Computone Intelliport II/Plus Multiport Serial Driver.
 connector/
 	- docs on the netlink based userspace<->kernel space communication mod.
 console/
 	- documentation on Linux console drivers.
-cpqarray.txt
-	- info on using Compaq's SMART2 Intelligent Disk Array Controllers.
 cpu-freq/
 	- info on CPU frequency and voltage scaling.
 cpu-hotplug.txt
@@ -126,8 +116,6 @@ device-mapper/
 	- directory with info on Device Mapper.
 devices.txt
 	- plain ASCII listing of all the nodes in /dev/ with major minor #'s.
-digiepca.txt
-	- info on Digi Intl. {PC,PCI,EISA}Xx and Xem series cards.
 dontdiff
 	- file containing a list of files that should never be diff'ed.
 driver-model/
@@ -152,14 +140,10 @@ filesystems/
 	- info on the vfs and the various filesystems that Linux supports.
 firmware_class/
 	- request_firmware() hotplug interface info.
-floppy.txt
-	- notes and driver options for the floppy disk driver.
 frv/
 	- Fujitsu FR-V Linux documentation.
 gpio.txt
 	- overview of GPIO (General Purpose Input/Output) access conventions.
-hayes-esp.txt
-	- info on using the Hayes ESP serial driver.
 highuid.txt
 	- notes on the change from 16 bit to 32 bit user/group IDs.
 timers/
@@ -186,8 +170,6 @@ io_ordering.txt
 	- info on ordering I/O writes to memory-mapped addresses.
 ioctl/
 	- directory with documents describing various IOCTL calls.
-ioctl-number.txt
-	- how to implement and register device/driver ioctl calls.
 iostats.txt
 	- info on I/O statistics Linux kernel provides.
 irqflags-tracing.txt
@@ -250,14 +232,10 @@ mips/
 	- directory with info about Linux on MIPS architecture.
 mono.txt
 	- how to execute Mono-based .NET binaries with the help of BINFMT_MISC.
-moxa-smartio
-	- file with info on installing/using Moxa multiport serial driver.
 mutex-design.txt
 	- info on the generic mutex subsystem.
 namespaces/
 	- directory with various information about namespaces
-nbd.txt
-	- info on a TCP implementation of a network block device.
 netlabel/
 	- directory with information on the NetLabel subsystem.
 networking/
@@ -270,8 +248,6 @@ numastat.txt
 	- info on how to read Numa policy hit/miss statistics in sysfs.
 oops-tracing.txt
 	- how to decode those nasty internal kernel error dump messages.
-paride.txt
-	- information about the parallel port IDE subsystem.
 parisc/
 	- directory with info on using Linux on PA-RISC architecture.
 parport.txt
@@ -292,18 +268,12 @@ preempt-locking.txt
 	- info on locking under a preemptive kernel.
 prio_tree.txt
 	- info on radix-priority-search-tree use for indexing vmas.
-ramdisk.txt
-	- short guide on how to set up and use the RAM disk.
 rbtree.txt
 	- info on what red-black trees are and what they are for.
-riscom8.txt
-	- notes on using the RISCom/8 multi-port serial driver.
 robust-futex-ABI.txt
 	- documentation of the robust futex ABI.
 robust-futexes.txt
 	- a description of what robust futexes are.
-rocket.txt
-	- info on the Comtrol RocketPort multiport serial driver.
 rt-mutex-design.txt
 	- description of the RealTime mutex implementation design.
 rt-mutex.txt
@@ -332,8 +302,6 @@ sparc/
 	- directory with info on using Linux on Sparc architecture.
 sparse.txt
 	- info on how to obtain and use the sparse tool for typechecking.
-specialix.txt
-	- info on hardware/driver for specialix IO8+ multiport serial card.
 spi/
 	- overview of Linux kernel Serial Peripheral Interface (SPI) support.
 spinlocks.txt
@@ -342,14 +310,10 @@ stable_api_nonsense.txt
 	- info on why the kernel does not have a stable in-kernel api or abi.
 stable_kernel_rules.txt
 	- rules and procedures for the -stable kernel releases.
-stallion.txt
-	- info on using the Stallion multiport serial driver.
 svga.txt
 	- short guide on selecting video modes at boot via VGA BIOS.
 sysfs-rules.txt
 	- How not to use sysfs.
-sx.txt
-	- info on the Specialix SX/SI multiport serial driver.
 sysctl/
 	- directory with info on the /proc/sys/* files.
 sysrq.txt
@@ -358,8 +322,6 @@ telephony/
 	- directory with info on telephony (e.g. voice over IP) support.
 time_interpolators.txt
 	- info on time interpolators.
-tty.txt
-	- guide to the locking policies of the tty layer.
 uml/
 	- directory with information about User Mode Linux.
 unicode.txt

Documentation/PCI/00-INDEX

@@ -1,5 +1,7 @@
 00-INDEX
 	- this file
+MSI-HOWTO.txt
+	- the Message Signaled Interrupts (MSI) Driver Guide HOWTO and FAQ.
 PCI-DMA-mapping.txt
 	- info for PCI drivers using DMA portably across all platforms
 PCIEBUS-HOWTO.txt

Documentation/blockdev/00-INDEX

@@ -0,0 +1,16 @@
+00-INDEX
+	- this file
+README.DAC960
+	- info on Mylex DAC960/DAC1100 PCI RAID Controller Driver for Linux.
+cciss.txt
+	- info, major/minor #'s for Compaq's SMART Array Controllers.
+cpqarray.txt
+	- info on using Compaq's SMART2 Intelligent Disk Array Controllers.
+floppy.txt
+	- notes and driver options for the floppy disk driver.
+nbd.txt
+	- info on a TCP implementation of a network block device.
+paride.txt
+	- information about the parallel port IDE subsystem.
+ramdisk.txt
+	- short guide on how to set up and use the RAM disk.

Documentation/ioctl/00-INDEX

@@ -0,0 +1,10 @@
+00-INDEX
+	- this file
+cdrom.txt
+	- summary of CDROM ioctl calls
+hdio.txt
+	- summary of HDIO_ ioctl calls
+ioctl-decoding.txt
+	- how to decode the bits of an IOCTL code
+ioctl-number.txt
+	- how to implement and register device/driver ioctl calls

Documentation/kernel-parameters.txt

@@ -629,7 +629,7 @@ and is between 256 and 4096 characters. It is defined in the file
 
 	digiepca=	[HW,SERIAL]
 			See drivers/char/README.epca and
-			Documentation/digiepca.txt.
+			Documentation/serial/digiepca.txt.
 
 	disable_mtrr_cleanup [X86]
 	enable_mtrr_cleanup [X86]
@@ -740,7 +740,7 @@ and is between 256 and 4096 characters. It is defined in the file
 			See header of drivers/scsi/fdomain.c.
 
 	floppy=		[HW]
-			See Documentation/floppy.txt.
+			See Documentation/blockdev/floppy.txt.
 
 	force_pal_cache_flush
 			[IA-64] Avoid check_sal_cache_flush which may hang on
@@ -1101,7 +1101,7 @@ and is between 256 and 4096 characters. It is defined in the file
 			the same attribute, the last one is used.
 
 	load_ramdisk=	[RAM] List of ramdisks to load from floppy
-			See Documentation/ramdisk.txt.
+			See Documentation/blockdev/ramdisk.txt.
 
 	lockd.nlm_grace_period=P  [NFS] Assign grace period.
 			Format: <integer>
@@ -1596,7 +1596,7 @@ and is between 256 and 4096 characters. It is defined in the file
 
 	pcd.		[PARIDE]
 			See header of drivers/block/paride/pcd.c.
-			See also Documentation/paride.txt.
+			See also Documentation/blockdev/paride.txt.
 
 	pci=option[,option...]	[PCI] various PCI subsystem options:
 		off		[X86] don't probe for the PCI bus
@@ -1697,7 +1697,7 @@ and is between 256 and 4096 characters. It is defined in the file
 	pcmv=		[HW,PCMCIA] BadgePAD 4
 
 	pd.		[PARIDE]
-			See Documentation/paride.txt.
+			See Documentation/blockdev/paride.txt.
 
 	pdcchassis=	[PARISC,HW] Disable/Enable PDC Chassis Status codes at
 			boot time.
@@ -1705,10 +1705,10 @@ and is between 256 and 4096 characters. It is defined in the file
 			See arch/parisc/kernel/pdc_chassis.c
 
 	pf.		[PARIDE]
-			See Documentation/paride.txt.
+			See Documentation/blockdev/paride.txt.
 
 	pg.		[PARIDE]
-			See Documentation/paride.txt.
+			See Documentation/blockdev/paride.txt.
 
 	pirq=		[SMP,APIC] Manual mp-table setup
 			See Documentation/x86/i386/IO-APIC.txt.
@@ -1778,7 +1778,7 @@ and is between 256 and 4096 characters. It is defined in the file
 
 	prompt_ramdisk=	[RAM] List of RAM disks to prompt for floppy disk
 			before loading.
-			See Documentation/ramdisk.txt.
+			See Documentation/blockdev/ramdisk.txt.
 
 	psmouse.proto=	[HW,MOUSE] Highest PS2 mouse protocol extension to
 			probe for; one of (bare|imps|exps|lifebook|any).
@@ -1798,7 +1798,7 @@ and is between 256 and 4096 characters. It is defined in the file
 			<io>,<mss_io>,<mss_irq>,<mss_dma>,<mpu_io>,<mpu_irq>
 
 	pt.		[PARIDE]
-			See Documentation/paride.txt.
+			See Documentation/blockdev/paride.txt.
 
 	pty.legacy_count=
 			[KNL] Number of legacy pty's. Overwrites compiled-in
@@ -1812,10 +1812,10 @@ and is between 256 and 4096 characters. It is defined in the file
 			See Documentation/md.txt.
 
 	ramdisk_blocksize=	[RAM]
-			See Documentation/ramdisk.txt.
+			See Documentation/blockdev/ramdisk.txt.
 
 	ramdisk_size=	[RAM] Sizes of RAM disks in kilobytes
-			See Documentation/ramdisk.txt.
+			See Documentation/blockdev/ramdisk.txt.
 
 	rcupdate.blimit=	[KNL,BOOT]
 			Set maximum number of finished RCU callbacks to process
@@ -2147,7 +2147,7 @@ and is between 256 and 4096 characters. It is defined in the file
 			See Documentation/sonypi.txt
 
 	specialix=	[HW,SERIAL] Specialix multi-serial port adapter
-			See Documentation/specialix.txt.
+			See Documentation/serial/specialix.txt.
 
 	spia_io_base=	[HW,MTD]
 	spia_fio_base=

Documentation/serial/00-INDEX

@@ -0,0 +1,24 @@
+00-INDEX
+	- this file.
+README.cycladesZ
+	- info on Cyclades-Z firmware loading.
+computone.txt
+	- info on Computone Intelliport II/Plus Multiport Serial Driver.
+digiepca.txt
+	- info on Digi Intl. {PC,PCI,EISA}Xx and Xem series cards.
+hayes-esp.txt
+	- info on using the Hayes ESP serial driver.
+moxa-smartio
+	- file with info on installing/using Moxa multiport serial driver.
+riscom8.txt
+	- notes on using the RISCom/8 multi-port serial driver.
+rocket.txt
+	- info on the Comtrol RocketPort multiport serial driver.
+specialix.txt
+	- info on hardware/driver for specialix IO8+ multiport serial card.
+stallion.txt
+	- info on using the Stallion multiport serial driver.
+sx.txt
+	- info on the Specialix SX/SI multiport serial driver.
+tty.txt
+	- guide to the locking policies of the tty layer.

Documentation/serial/computone.txt

@@ -247,7 +247,7 @@ shar archive to make it easier to extract the script from the documentation.
 To create the ip2mkdev shell script change to a convenient directory (/tmp
 works just fine) and run the following command:
 
-	unshar Documentation/computone.txt
+	unshar Documentation/serial/computone.txt
 		(This file)
 
 You should now have a file ip2mkdev in your current working directory with

drivers/block/Kconfig

@@ -21,7 +21,8 @@ config BLK_DEV_FD
 	---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/floppy.txt>.
+	  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.
@@ -76,7 +77,7 @@ config PARIDE
 	  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/paride.txt> for more information.
+	  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
@@ -114,9 +115,9 @@ config BLK_CPQ_DA
 	help
 	  This is the driver for Compaq Smart Array controllers.  Everyone
 	  using these boards should say Y here.  See the file
-	  <file:Documentation/cpqarray.txt> for the current list of boards
+	  <file:Documentation/blockdev/cpqarray.txt> for the current list of
-	  supported by this driver, and for further information on the use of
+	  boards supported by this driver, and for further information on the
-	  this driver.
+	  use of this driver.
 
 config BLK_CPQ_CISS_DA
 	tristate "Compaq Smart Array 5xxx support"
@@ -124,7 +125,7 @@ config BLK_CPQ_CISS_DA
 	help
 	  This is the driver for Compaq Smart Array 5xxx controllers.
 	  Everyone using these boards should say Y here.
-	  See <file:Documentation/cciss.txt> for the current list of
+	  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.
 
@@ -135,7 +136,7 @@ config CISS_SCSI_TAPE
 	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/cciss.txt> for more details.)
+	  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.
@@ -149,8 +150,8 @@ config BLK_DEV_DAC960
 	help
 	  This driver adds support for the Mylex DAC960, AcceleRAID, and
 	  eXtremeRAID PCI RAID controllers.  See the file
-	  <file:Documentation/README.DAC960> for further information about
+	  <file:Documentation/blockdev/README.DAC960> for further information
-	  this driver.
+	  about this driver.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called DAC960.
@@ -278,9 +279,9 @@ config BLK_DEV_NBD
 	  userland (making server and client physically the same computer,
 	  communicating using the loopback network device).
 
-	  Read <file:Documentation/nbd.txt> for more information, especially
+	  Read <file:Documentation/blockdev/nbd.txt> for more information,
-	  about where to find the server code, which runs in user space and
+	  especially about where to find the server code, which runs in user
-	  does not need special kernel support.
+	  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.
@@ -321,8 +322,8 @@ config BLK_DEV_RAM
 	  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
+	  Note that the kernel command line option "ramdisk=XX" is now obsolete.
-	  obsolete. For details, read <file:Documentation/ramdisk.txt>.
+	  For details, read <file:Documentation/blockdev/ramdisk.txt>.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called rd.

drivers/block/floppy.c

@@ -4124,7 +4124,7 @@ static int __init floppy_setup(char *str)
 		printk("\n");
 	} else
 		DPRINT("botched floppy option\n");
-	DPRINT("Read Documentation/floppy.txt\n");
+	DPRINT("Read Documentation/blockdev/floppy.txt\n");
 	return 0;
 }
 

drivers/char/Kconfig

@@ -124,7 +124,7 @@ config COMPUTONE
 	  which give you many serial ports. You would need something like this
 	  to connect more than two modems to your Linux box, for instance in
 	  order to become a dial-in server. If you have a card like that, say
-	  Y here and read <file:Documentation/computone.txt>.
+	  Y here and read <file:Documentation/serial/computone.txt>.
 
 	  To compile this driver as module, choose M here: the
 	  module will be called ip2.
@@ -136,7 +136,7 @@ config ROCKETPORT
 	  This driver supports Comtrol RocketPort and RocketModem PCI boards.   
           These boards provide 2, 4, 8, 16, or 32 high-speed serial ports or
           modems.  For information about the RocketPort/RocketModem  boards
-          and this driver read <file:Documentation/rocket.txt>.
+          and this driver read <file:Documentation/serial/rocket.txt>.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called rocket.
@@ -154,7 +154,7 @@ config CYCLADES
 	  your Linux box, for instance in order to become a dial-in server.
 
 	  For information about the Cyclades-Z card, read
-	  <file:Documentation/README.cycladesZ>.
+	  <file:Documentation/serial/README.cycladesZ>.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called cyclades.
@@ -183,7 +183,7 @@ config DIGIEPCA
 	  box, for instance in order to become a dial-in server. This driver
 	  supports the original PC (ISA) boards as well as PCI, and EISA. If
 	  you have a card like this, say Y here and read the file
-	  <file:Documentation/digiepca.txt>.
+	  <file:Documentation/serial/digiepca.txt>.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called epca.
@@ -289,7 +289,7 @@ config RISCOM8
 	  which gives you many serial ports. You would need something like
 	  this to connect more than two modems to your Linux box, for instance
 	  in order to become a dial-in server. If you have a card like that,
-	  say Y here and read the file <file:Documentation/riscom8.txt>.
+	  say Y here and read the file <file:Documentation/serial/riscom8.txt>.
 
 	  Also it's possible to say M here and compile this driver as kernel
 	  loadable module; the module will be called riscom8.
@@ -304,8 +304,8 @@ config SPECIALIX
 	  your Linux box, for instance in order to become a dial-in server.
 
 	  If you have a card like that, say Y here and read the file
-	  <file:Documentation/specialix.txt>. Also it's possible to say M here
+	  <file:Documentation/serial/specialix.txt>. Also it's possible to say
-	  and compile this driver as kernel loadable module which will be
+	  M here and compile this driver as kernel loadable module which will be
 	  called specialix.
 
 config SX
@@ -313,7 +313,7 @@ config SX
 	depends on SERIAL_NONSTANDARD && (PCI || EISA || ISA)
 	help
 	  This is a driver for the SX and SI multiport serial cards.
-	  Please read the file <file:Documentation/sx.txt> for details.
+	  Please read the file <file:Documentation/serial/sx.txt> for details.
 
 	  This driver can only be built as a module ( = code which can be
 	  inserted in and removed from the running kernel whenever you want).
@@ -344,8 +344,8 @@ config STALDRV
 	  like this to connect more than two modems to your Linux box, for
 	  instance in order to become a dial-in server.  If you say Y here,
 	  you will be asked for your specific card model in the next
-	  questions.  Make sure to read <file:Documentation/stallion.txt> in
+	  questions.  Make sure to read <file:Documentation/serial/stallion.txt>
-	  this case.  If you have never heard about all this, it's safe to
+	  in this case.  If you have never heard about all this, it's safe to
 	  say N.
 
 config STALLION
@@ -354,7 +354,7 @@ config STALLION
 	help
 	  If you have an EasyIO or EasyConnection 8/32 multiport Stallion
 	  card, then this is for you; say Y.  Make sure to read
-	  <file:Documentation/stallion.txt>.
+	  <file:Documentation/serial/stallion.txt>.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called stallion.
@@ -365,7 +365,7 @@ config ISTALLION
 	help
 	  If you have an EasyConnection 8/64, ONboard, Brumby or Stallion
 	  serial multiport card, say Y here. Make sure to read
-	  <file:Documentation/stallion.txt>.
+	  <file:Documentation/serial/stallion.txt>.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called istallion.

drivers/char/specialix.c

@@ -72,7 +72,7 @@
 /*
  * There is a bunch of documentation about the card, jumpers, config
  * settings, restrictions, cables, device names and numbers in
- * Documentation/specialix.txt
+ * Documentation/serial/specialix.txt
  */
 
 #include <linux/module.h>