linux-kernel - Re: SLUB defrag pull request?

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Date:	Mon, 13 Oct 2008 09:24:58 -0700
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Miklos Szeredi <miklos@...redi.hu>
CC:	nickpiggin@...oo.com.au, hugh@...itas.com, linux-mm@...ck.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	penberg@...helsinki.fi, akpm@...ux-foundation.org
Subject: Re: SLUB defrag pull request?

Miklos Szeredi wrote:
> I think it's wrong to unhash dentries while they are possibly still
> being used.  You can do the shrink_dcache_parent() here, but should
> leave the unhashing to be done by prune_one_dentry(), after it's been
> checked that there are no other users of the dentry.
>
>   
d_invalidate() calls shrink_dcache_parent() as needed and will fail if 
there are other users of the dentry.


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