From: Chris Mason <chris.mason@oracle.com>
Date: Sat, 24 May 2008 18:04:53 +0000 (-0400)
Subject: Btrfs: Allocator fix variety pack
X-Git-Tag: v2.6.29-rc1~27^2~9^2~55^2~56^2~30^2~166
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0ef3e66b6700eb8f052daa8b89443ff872fbbdfc;p=pandora-kernel.git

Btrfs: Allocator fix variety pack

* Force chunk allocation when find_free_extent has to do a full scan
* Record the max key at the start of defrag so it doesn't run forever
* Block groups might not be contiguous, make a forward search for the
  next block group in extent-tree.c
* Get rid of extra checks for total fs size
* Fix relocate_one_reference to avoid relocating the same file data block
  twice when referenced by an older transaction
* Use the open device count when allocating chunks so that we don't
  try to allocate from devices that don't exist

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