From: Christoph Hellwig <hch@infradead.org>
Date: Sun, 10 Oct 2010 09:36:27 +0000 (-0400)
Subject: fs: use RCU read side protection in d_validate
X-Git-Tag: v2.6.37-rc1~94^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3825bdb7ed920845961f32f364454bee5f469abb;p=pandora-kernel.git

fs: use RCU read side protection in d_validate

d_validate does a purely read lookup in the dentry hash, so use RCU read side
locking instead of dcache_lock.  Split out from a larget patch by
Nick Piggin <npiggin@suse.de>.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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