linux-kernel - Re: -mm merge plans for 2.6.23

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Message-ID:  <46A85D95.509@kingswood-consulting.co.uk>
Date:	Thu, 26 Jul 2007 09:38:45 +0100
From:	Frank Kingswood <frank@...gswood-consulting.co.uk>
To:	linux-kernel@...r.kernel.org
Cc:	ck@....kolivas.org, linux-mm@...ck.org
Subject:  Re: -mm merge plans for 2.6.23

Andi Kleen wrote:
> One simple way to fix this would be to implement a fadvise() flag
> that puts the dentry/inode on a "soon to be expired" list if there
> are no other references. Then if a dentry allocation needs more
> memory try to reuse dentries from that list (or better queue) first. Any other
> access will remove the dentry from the list. 
> 
> Disadvantage would be that the userland would need to be patched,
> but I guess it's better than adding very dubious heuristics to the
> kernel.

Are you going to change every single large memory application in the 
world? As I wrote before, it is *not* about updatedb, but about all 
applications that use a lot of memory, and then terminate.

Frank

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