From: David Teigland <teigland@redhat.com>
Date: Mon, 7 Jan 2013 17:03:42 +0000 (-0600)
Subject: dlm: avoid scanning unchanged toss lists
X-Git-Tag: v3.9-rc1~131^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f11722834605a155022a8098ad7d8adacf44b22f;p=pandora-kernel.git

dlm: avoid scanning unchanged toss lists

Keep track of whether a toss list contains any
shrinkable rsbs.  If not, dlm_scand can avoid
scanning the list for rsbs to shrink.  Unnecessary
scanning can otherwise waste a lot of time because
the toss lists can contain a large number of rsbs
that are non-shrinkable (directory records).

Signed-off-by: David Teigland <teigland@redhat.com>
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