From 2304450783dfde7b0b94ae234edd0dbffa865073 Mon Sep 17 00:00:00 2001
From: Nick Piggin <npiggin@kernel.dk>
Date: Fri, 7 Jan 2011 17:49:31 +1100
Subject: [PATCH] fs: dcache scale lru

Add a new lock, dcache_lru_lock, to protect the dcache LRU list from concurrent
modification. d_lru is also protected by d_lock, which allows LRU lists to be
accessed without the lru lock, using RCU in future patches.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>
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