linux-kernel - Re: [PATCH v4 04/12] auto-fs: rename d_count field of dentry to d

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Date:	Thu, 04 Jul 2013 10:51:29 -0400
From:	Waiman Long <waiman.long@...com>
To:	Al Viro <viro@...IV.linux.org.uk>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jeff Layton <jlayton@...hat.com>,
	Miklos Szeredi <mszeredi@...e.cz>,
	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ian Kent <raven@...maw.net>,
	autofs mailing list <autofs@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Andi Kleen <andi@...stfloor.org>,
	"Chandramouleeswaran, Aswin" <aswin@...com>,
	"Norton, Scott J" <scott.norton@...com>
Subject: Re: [PATCH v4 04/12] auto-fs: rename d_count field of dentry to d_refcount

On 07/04/2013 12:59 AM, Al Viro wrote:
> On Wed, Jul 03, 2013 at 08:50:07PM -0700, Linus Torvalds wrote:
>> On Wed, Jul 3, 2013 at 8:33 PM, Waiman Long<Waiman.Long@...com>  wrote:
>>> Because of the d_count name change made in dcache.h, all references
>>> to d_count have to be changed to d_refcount.  There is no change in
>>> logic and everything should just work.
>> These filesystem patches need to be just joined into the same patch
>> that does the d_count ->  d_refcount change.
>>
>> Otherwise the kernel won't build in lots of configurations for some
>> commits, which makes things like bisecting much more painful than it
>> should be.
>>
>> So we can't do piece-meal changes that break the build for parts of the tree.
> Frankly, my preference here would be to add static inline unsigned d_count(...)
> and convert the uses of ->d_count outside of fs/{dcache.c,namei.c} and
> include/linux/dcache.c to it as the first commit.  All users outside those
> are readers, so there's no point playing with macros in this case...

Yes, I could do that.

Regards,
Longman


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