From 1bb91902dc90e25449893e693ad45605cb08fbe5 Mon Sep 17 00:00:00 2001
From: Alexandre Oliva <lxoliva@fsfla.org>
Date: Fri, 14 Oct 2011 12:10:36 -0300
Subject: [PATCH] Btrfs: revamp clustered allocation logic

Parameterize clusters on minimum total size, minimum chunk size and
minimum contiguous size for at least one chunk, without limits on
cluster, window or gap sizes.  Don't tolerate any fragmentation for
SSD_SPREAD; accept it for metadata, but try to keep data dense.

Signed-off-by: Alexandre Oliva <oliva@lsd.ic.unicamp.br>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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