From d98456fcafa6f3fd1985f9b7429aaa3531c6bfa0 Mon Sep 17 00:00:00 2001
From: Chris Mason <chris.mason@oracle.com>
Date: Tue, 31 Jan 2012 20:27:41 -0500
Subject: [PATCH] Btrfs: don't reserve data with extents locked in
 btrfs_fallocate

btrfs_fallocate tries to allocate space only if ranges in the file don't
already exist.  But the enospc checks it does are not allowed with
extents locked.

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