From 324ae4df00fdc1a6a179bf584d8addf027bb75fb Mon Sep 17 00:00:00 2001
From: Yan <yanzheng@21cn.com>
Date: Fri, 16 Nov 2007 14:57:08 -0500
Subject: [PATCH] Btrfs: Add block group pinned accounting back

This patch adds a helper function 'update_pinned_extents' to
extent-tree.c. The usage of the helper function is similar to
'update_block_group',  the last parameter of the function indicates
pin vs unpin.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
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