From 7b13b7b119c932a5eca486db4113f4c1fe3b97a8 Mon Sep 17 00:00:00 2001
From: Chris Mason <chris.mason@oracle.com>
Date: Fri, 18 Apr 2008 10:29:50 -0400
Subject: [PATCH] Btrfs: Don't drop extent_map cache during releasepage on the
 btree inode

The btree inode should only have a single extent_map in the cache,
it doesn't make sense to ever drop it.

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