From: Sage Weil <sage@newdream.net>
Date: Thu, 16 Sep 2010 23:26:51 +0000 (-0700)
Subject: ceph: fix cap_snap and realm split
X-Git-Tag: v2.6.36-rc6~84^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ae00d4f37f4df56821331deb1028748110dd6dc9;p=pandora-kernel.git

ceph: fix cap_snap and realm split

The cap_snap creation/queueing relies on both the current i_head_snapc
_and_ the i_snap_realm pointers being correct, so that the new cap_snap
can properly reference the old context and the new i_head_snapc can be
updated to reference the new snaprealm's context.  To fix this, we:

 - move inodes completely to the new (split) realm so that i_snap_realm
   is correct, and
 - generate the new snapc's _before_ queueing the cap_snaps in
   ceph_update_snap_trace().

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