From 6a41dd0922e3c63e677c2d8f7906ce6a3e097af1 Mon Sep 17 00:00:00 2001
From: Josef Bacik <jbacik@fb.com>
Date: Fri, 13 Mar 2015 15:12:23 -0400
Subject: [PATCH] Btrfs: account for the correct number of extents for delalloc
 reservations

Direct IO can easily pass in an buffer that is greater than
BTRFS_MAX_EXTENT_SIZE, so take this into account when reserving extents in the
delalloc reservation code.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
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