linux-kernel - Re: [patch 1/6] fs: icache RCU free inodes

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Message-ID: <87lj52pokp.fsf@basil.nowhere.org>
Date:	Tue, 09 Nov 2010 15:19:02 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Nick Piggin <npiggin@...nel.dk>
Cc:	Al Viro <viro@...IV.linux.org.uk>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [patch 1/6] fs: icache RCU free inodes

Nick Piggin <npiggin@...nel.dk> writes:

> So here is the inode RCU code. It's obviously not worth doing until the
> actual rcu-walk path walking is in, but I'd like to get opinions on it.
> It would be nice to merge it in Al's tree at some point, though.

I read the patch. It was quite monotonous (I guess that's a good thing)
But it wasn't clear to me why you added the INIT_LIST_HEAD()s
everywhere. Is this for stopping parallel walkers?

Ok there's a comment in the doc: "VFS expects it to be initialized"
Is that really true today?  I don't think the old code does that.

Other than that it seems straight forward.

Reviewed-by: Andi Kleen <ak@...ux.intel.com>

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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