linux-kernel - Re: [PATCH 1/3] revoke: misc fixes

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Message-ID: <Pine.LNX.4.64.0703160943460.15253@sbz-30.cs.Helsinki.FI>
Date:	Fri, 16 Mar 2007 09:45:12 +0200 (EET)
From:	Pekka J Enberg <penberg@...helsinki.fi>
To:	Nick Piggin <nickpiggin@...oo.com.au>
cc:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] revoke: misc fixes

Hi Nick,

On Fri, 16 Mar 2007, Nick Piggin wrote:
> Could you try something like walk the i_mmap lists to find mms with vmas that
> haven't need revoking, then each time you find one, take a ref on the mm, drop
> i_mmap_lock, take mmap_sem, and walk all its vmas looking for any that
> reference the inode?

Yes, that would work. What I am cooking up now is dropping 
->i_mmap_lock, restarting the scan after each revoke_vma() and skipping 
vmas that are VM_REVOKED.

			Pekka
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