Re: [BK][PATCH] ReiserFS CPU and memory bandwidth efficient large writes

From: Andrew Morton (
Date: Sat Dec 14 2002 - 13:42:38 EST

Oleg Drokin wrote:
> Hello!
> On Fri, Dec 13, 2002 at 01:40:42PM -0800, Andrew Morton wrote:
> > This seems wrong. This could be a newly-allocated pagecache page. It is not
> > yet fully uptodate. If (say) the subsequent copy_from_user gets a fault then
> > it appears that this now-uptodate pagecache page will leak uninitialised stuff?
> Ok, after all I think we do not need this uptodate stuff at all.

Well that certainly simplifies things.
> Find below the patch that address all the issues you've brought.
> It is on top of previous one.
> Do you think it is ok now?

I addresses the things I noticed and raised, thanks. Except for the
stack-space use. People are waving around 4k-stack patches, and we
do need to be careful there.
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