From: Theodore Ts'o <tytso@mit.edu>
Date: Thu, 5 Mar 2009 00:31:53 +0000 (-0500)
Subject: ext4: Use struct flex_groups to calculate get_orlov_stats()
X-Git-Tag: v2.6.30-rc1~416^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7d39db14a42cbd719c7515b9da8f85a2eb6a0633;p=pandora-kernel.git

ext4: Use struct flex_groups to calculate get_orlov_stats()

Instead of looping over all of the block groups in a flex group
summing their summary statistics, start tracking used_dirs in struct
flex_groups, and use struct flex_groups instead.  This should save a
bit of CPU for mkdir-heavy workloads.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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