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[PATCH] Update ramdisk documentation 

The default ramdisk blocksize is actually 1024, not 512 bytes.  Also fixes
up some trailing whitespace issues.

Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
hifive-unleashed-5.1
Nathan Scott 2006-07-14 00:24:10 -07:00 committed by Linus Torvalds
parent 22c4af4092
commit 086626a747
1 changed files with 6 additions and 6 deletions
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12
Documentation/ramdisk.txt
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@ -6,7 +6,7 @@ Contents:
1) Overview
2) Kernel Command Line Parameters
3) Using "rdev -r"
4) An Example of Creating a Compressed RAM Disk
4) An Example of Creating a Compressed RAM Disk
1) Overview
@ -34,7 +34,7 @@ make it clearer. The original "ramdisk=<ram_size>" has been kept around for
compatibility reasons, but it may be removed in the future.
The new RAM disk also has the ability to load compressed RAM disk images,
allowing one to squeeze more programs onto an average installation or
allowing one to squeeze more programs onto an average installation or
rescue floppy disk.
@ -51,7 +51,7 @@ default is 4096 (4 MB) (8192 (8 MB) on S390).
===================
This parameter tells the RAM disk driver how many bytes to use per block. The
default is 512.
default is 1024 (BLOCK_SIZE).
3) Using "rdev -r"
@ -70,7 +70,7 @@ These numbers are no magical secrets, as seen below:
./arch/i386/kernel/setup.c:#define RAMDISK_PROMPT_FLAG 0x8000
./arch/i386/kernel/setup.c:#define RAMDISK_LOAD_FLAG 0x4000
Consider a typical two floppy disk setup, where you will have the
Consider a typical two floppy disk setup, where you will have the
kernel on disk one, and have already put a RAM disk image onto disk #2.
Hence you want to set bits 0 to 13 as 0, meaning that your RAM disk
@ -97,12 +97,12 @@ Since the default start = 0 and the default prompt = 1, you could use:
append = "load_ramdisk=1"
4) An Example of Creating a Compressed RAM Disk
4) An Example of Creating a Compressed RAM Disk
----------------------------------------------
To create a RAM disk image, you will need a spare block device to
construct it on. This can be the RAM disk device itself, or an
unused disk partition (such as an unmounted swap partition). For this
unused disk partition (such as an unmounted swap partition). For this
example, we will use the RAM disk device, "/dev/ram0".
Note: This technique should not be done on a machine with less than 8 MB