From 05dadc09f52ad5a631da1aa8767c5b80e121f0c4 Mon Sep 17 00:00:00 2001
From: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Date: Thu, 29 Nov 2012 05:08:26 +0000
Subject: [PATCH] Btrfs: add fiemap's flag check

When the flag not supported is specified, it is necessary to return the error
to the caller.
So, we add the validity check of the fiemap's flag.

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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