Hello,
On Sun, Sep 30, 2012 at 5:01 AM, Mulyadi Santosa
<mulyadi.santosa@xxxxxxxxx> wrote:
> Hi Tobi...
>
> On Sun, Sep 30, 2012 at 1:10 AM, Tobias Boege <tobias@xxxxxxxxxxxxxx> wrote:
>> Have you read Documentation/filesystems/ramfs-rootfs-initramfs.txt? I didn't
>> but there are some eye-catching statements:
>>
>> 1. initramfs becomes a rootfs (l. 86)
>> 2. rootfs is a special instance of ramfs (l. 73)
>> 3. ramfs cannot be turned off (l. 29ff)
>>
>> This means that initramfs cannot be turned off.
>>
>> 4. initramfs is a gzipped cpio archive and contained within the kernel
>> (l. 85) and so is the cpio extractor code (l. 166f)
>> 5. initramfs is automatically loaded as rootfs (l. 86)
>
> Interesting catch, Tobi..... for sure sometimes I am too lazy to read
> the documentation.
>
Just wanted to add something fresh. I'm reading through ramfs sources:
$ wc -l fs/ramfs/*.c
55 fs/ramfs/file-mmu.c
267 fs/ramfs/file-nommu.c
289 fs/ramfs/inode.c
611 total
600 lines! This is really readable! There's even a note from Linus
saying it's a nice template
code to read as a fs starting point.
Interesting, uh?
Ezequiel
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