From 052bb34af3bf8ae2001b9f03d884ba0def3e427c Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@newdream.net>
Date: Tue, 9 Mar 2010 12:52:26 -0800
Subject: [PATCH] ceph: add missing locking to protect i_snap_realm_item during
 split

All ci->i_snap_realm_item/realm->inodes_with_caps manipulation should be
protected by realm->inodes_with_caps_lock.  This bug would have only bit
us in a rare race with a realm split (during some snap creations).

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