From: Sage Weil <sage@newdream.net>
Date: Mon, 18 Oct 2010 21:04:31 +0000 (-0700)
Subject: ceph: do not carry i_lock for readdir from dcache
X-Git-Tag: v2.6.37-rc1~221^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=efa4c1206eaff047c474af2136748a58eb8cc33b;p=pandora-kernel.git

ceph: do not carry i_lock for readdir from dcache

We were taking dcache_lock inside of i_lock, which introduces a dependency
not found elsewhere in the kernel, complicationg the vfs locking
scalability work.  Since we don't actually need it here anyway, remove
it.

We only need i_lock to test for the I_COMPLETE flag, so be careful to do
so without dcache_lock held.

Signed-off-by: Sage Weil <sage@newdream.net>
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