Re: [PATCH 09/17] fs: Make last_ino, iunique independent ofinode_lock

[Christoph Hellwig]

On Wed, Sep 29, 2010 at 10:18:41PM +1000, Dave Chinner wrote:
> From: Nick Piggin <npiggin@xxxxxxx>
> 
> Before removing the inode_lock, we need to make the last_ino  and iunique
> counters independent of the inode_lock. last_ino can be trivially converted to
> an atomic variable, while the iunique counter needs a new lock nested inside
> the inode_lock to provide the same protection that the inode_lock previously
> provided.

Given that last_ino becomes a per-cpu construct only a few patches later
I think there's no point to make it an atomic_t here - just reorder the
per-cpu patch before the inode_lock removal.

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