On Tue, Nov 16, 2010 at 6:09 AM, Nick Piggin <npiggin@kernel.dk> wrote:
quoted text
> There are 3 main parts to dcache scaling. This one primarily adds new locks
> to take over dcache_lock, and some pre/post prep and streamlining patches.
>
> The second implements fine grained locking, and is rather trivial after
> part 1.
>
> The third implements rcu-walk. rcu-walk depends on the first part, because it
> relies on using d_lock to protect the state of the dentry (when converting from
> rcu-walk to refcounted walk). Without the fine grained locing, we'd need to use
> dcache_lock for that, which would be a step backwards to put into path walking
> again.

Reviewed-by: Tim Pepper <lnxninja@linux.vnet.ibm.com>
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