Re: [PATCH 15/18] fs: introduce a per-cpu last_ino allocator

[Christoph Hellwig]

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
even move to a lazy assignment scheme where needed.  I'd also really
like to get a grip on why the simple counters if fine for some
filesystems while we need iunique() for others.

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