From: Al Viro <viro@zeniv.linux.org.uk>
Date: Wed, 28 May 2014 13:48:44 +0000 (-0400)
Subject: lift the "already marked killed" case into shrink_dentry_list()
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~124^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=64fd72e0a44bdd62c5ca277cb24d0d02b2d8e9dc;p=pandora-kernel.git

lift the "already marked killed" case into shrink_dentry_list()

It can happen only when dentry_kill() is called with unlock_on_failure
equal to 0 - other callers had dentry pinned until the moment they've
got ->d_lock and DCACHE_DENTRY_KILLED is set only after lockref_mark_dead().

IOW, only one of three call sites of dentry_kill() might end up reaching
that code.  Just move it there.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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