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(parent: 2187550) | patch
xfs: speed up free inode search
authorDave Chinner <dgc@sgi.com>
Mon, 31 Aug 2009 23:58:28 +0000 (20:58 -0300)
committerFelix Blyakher <felixb@sgi.com>
Tue, 1 Sep 2009 17:45:48 +0000 (12:45 -0500)
commitbd169565993b39b9b4b102cdac8b13e0a259ce2f
tree4cc6dc56cf7a2b9af71156299e091062dbe30594tree | snapshot
parent2187550525d7bcb8c87689e4eca41b1955bf9ac3commit | diff
xfs: speed up free inode search

Don't search too far - abort if it is outside a certain radius and simply do
a linear search for the first free inode.  In AGs with a million inodes this
can speed up allocation speed by 3-4x.

[hch: ported to the new xfs_ialloc.c world order]

Signed-off-by: Dave Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>
fs/xfs/xfs_ag.h diff | blob | history
fs/xfs/xfs_ialloc.c diff | blob | history
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