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DateSat, 09 Sep 2006 09:24:22 -0400
FromJeff Garzik <>
SubjectRe: [PATCH] linux/magic.h for magic numbers
Grzegorz Kulewski wrote:
> On Sat, 9 Sep 2006, Jeff Garzik wrote:
>> An IRC discussion sparked a memory:  most filesystems really don't
>> need to put anything at all in include/linux.  Excluding API-ish
>> filesystems like procfs, just about the only filesystem symbols that
>> get exported outside of __KERNEL__ are the *_SUPER_MAGIC symbols,
>> and similar symbols.
>>
>> After seeing the useful attributes of linux/poison.h, I propose a
>> similar linux/magic.h.
> 
> But... if some patch changes this file (like adding new magic symbol) it 
> will cause large part of the kernel to rebuild without any good reason. No?

No :)

* The days when linux/fs.h included individual filesystem headers is 
long gone.  Only the filesystems themselves typically include the 
linux/foo_fs*.h files these days.

* It's not like we add new filesystems to the kernel very often.

	Jeff


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