From: Christoph Hellwig <hch@infradead.org>
Date: Sun, 24 Apr 2011 19:06:16 +0000 (+0000)
Subject: xfs: exact busy extent tracking
X-Git-Tag: v3.0-rc1~327^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=97d3ac75e5e0ebf7ca38ae74cebd201c09b97ab2;p=pandora-kernel.git

xfs: exact busy extent tracking

Update the extent tree in case we have to reuse a busy extent, so that it
always is kept uptodate.  This is done by replacing the busy list searches
with a new xfs_alloc_busy_reuse helper, which updates the busy extent tree
in case of a reuse.  This allows us to allow reusing metadata extents
unconditionally, and thus avoid log forces especially for allocation btree
blocks.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
---

Reading git-diff-tree failed