Messages in this thread Patch in this message | | | Date | Tue, 11 Jul 2006 17:05:46 +1000 | From | Nathan Scott <> | Subject | [patch] Update ramdisk documentation |
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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>
Index: ramdisk-2.6/Documentation/ramdisk.txt =================================================================== --- ramdisk-2.6.orig/Documentation/ramdisk.txt 2006-07-11 16:36:12.696186000 +1000 +++ ramdisk-2.6/Documentation/ramdisk.txt 2006-07-11 16:36:20.008643000 +1000 @@ -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= 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 S =================== 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 ./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 defa 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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