linux-kernel - Re: linux-next: build failure after merge of the akpm-current tree

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Date:	Mon, 2 Sep 2013 09:53:48 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-next <linux-next@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Waiman Long <Waiman.Long@...com>,
	Namjae Jeon <namjae.jeon@...sung.com>,
	Ravishankar N <ravi.n1@...sung.com>,
	Amit Sahrawat <a.sahrawat@...sung.com>
Subject: Re: linux-next: build failure after merge of the akpm-current tree

Hi Linus,

On Fri, 30 Aug 2013 08:25:06 -0700 Linus Torvalds <torvalds@...ux-foundation.org> wrote:
>
> On Fri, Aug 30, 2013 at 1:12 AM, Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> >
> > I don't know if it is safe to read d_lockref.count without locking
> 
> That's not the issue. Since commit 84d08fa888e7 ("helper for reading
> ->d_count") non-core VFS code shouldn't try to access d_count directly
> at all. So instead of "dentry->d_count" it should use
> "d_count(dentry)". Then the code doesn't need to know about lockrefs
> or anything like that at all.

Thanks for that.  I will implement that temporary fix in linux-next today
unless Andrew has been busy over the weekend.
-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

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