linux-kernel - Re: [PATCH 15/18] fs: introduce a per-cpu last

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Date:	Sat, 16 Oct 2010 18:57:21 +1100
From:	Nick Piggin <npiggin@...nel.dk>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Al Viro <viro@...IV.linux.org.uk>,
	Dave Chinner <david@...morbit.com>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 15/18] fs: introduce a per-cpu last_ino allocator

On Fri, Oct 08, 2010 at 06:03:46AM -0400, Christoph Hellwig wrote:
> On Fri, Oct 08, 2010 at 10:56:58AM +0100, Al Viro wrote:
> > FWIW, that one is begging to be split; what I mean is that there are
> > two classes of callers; ones that will set i_ino themselves anyway
> > and ones that really want i_ino invented.  Two functions?
> 
> There's no reason to add i_ino before adding it to the per-sb list,
> we don't do so either for inodes acquired via iget.  The fix is simply
> to stop assigning i_ino in new_inode and call the helper to get it in
> the place that need it after the call to new_inode.  Later we can

My approach in my tree is a new function like Al suggests, which
simply doesn't assign the ino. That keeps compatibility backward.

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