From de474ee8bbc315b0e6772cebdb24b335f82cf95d Mon Sep 17 00:00:00 2001
From: Tristan Ye <tristan.ye@oracle.com>
Date: Fri, 18 Mar 2011 14:35:32 +0800
Subject: [PATCH] Ocfs2/move_extents: lock allocators and reserve metadata
 blocks and data clusters for extents moving.

ocfs2_lock_allocators_move_extents() was like the common ocfs2_lock_allocators(),
to lock metadata and data alloctors during extents moving, reserve appropriate
metadata blocks and data clusters, also performa a best- effort to calculate the
credits for journal transaction in one run of movement.

Signed-off-by: Tristan Ye <tristan.ye@oracle.com>
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