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[xfs-masters] Re: [PATCH 3/3] Assert notifier_block and notifier_call ar

To: sekharan@xxxxxxxxxx
Subject: [xfs-masters] Re: [PATCH 3/3] Assert notifier_block and notifier_call are not in init section
From: Linus Torvalds <torvalds@xxxxxxxx>
Date: Mon, 24 Apr 2006 19:47:50 -0700 (PDT)
Cc: akpm@xxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, herbert@xxxxxxxxxxxx, linux-xfs@xxxxxxxxxxx, xfs-masters@xxxxxxxxxxx, stern@xxxxxxxxxxxxxxxxxxx
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On Mon, 24 Apr 2006, sekharan@xxxxxxxxxx wrote:
> 
>       Feel free to drop this patch if you think it is not needed.

It's incorrect.

The init section will be free'd, and as a result can be re-allocated to 
other uses. Thus testing that data is not in the init-section makes no 
sense.

Testing for _code_ not being in the init section can be sensible, since 
code never gets re-allocated (modulo module code, but that's never in the 
init section). So checking the "notifier_call" part may be sensible, but 
checking the notifier block data pointer definitely is not.

Patches 1-2 applied.

                Linus


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