From cc68a8a5a4330a4bb72922d0c7a7044ae13ee692 Mon Sep 17 00:00:00 2001
From: Gerhard Heift <gerhard@heift.name>
Date: Thu, 30 Jan 2014 16:24:03 +0100
Subject: [PATCH] btrfs: new ioctl TREE_SEARCH_V2

This new ioctl call allows the user to supply a buffer of varying size in which
a tree search can store its results. This is much more flexible if you want to
receive items which are larger than the current fixed buffer of 3992 bytes or
if you want to fetch more items at once. Items larger than this buffer are for
example some of the type EXTENT_CSUM.

Signed-off-by: Gerhard Heift <Gerhard@Heift.Name>
Signed-off-by: Chris Mason <clm@fb.com>
Acked-by: David Sterba <dsterba@suse.cz>
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