From: Paolo Valente Date: Sat, 15 Sep 2012 00:41:35 +0000 (+0000) Subject: pkt_sched: fix virtual-start-time update in QFQ X-Git-Tag: v3.6-rc7~10^2~21 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=71261956973ba9e0637848a5adb4a5819b4bae83;p=pandora-kernel.git pkt_sched: fix virtual-start-time update in QFQ If the old timestamps of a class, say cl, are stale when the class becomes active, then QFQ may assign to cl a much higher start time than the maximum value allowed. This may happen when QFQ assigns to the start time of cl the finish time of a group whose classes are characterized by a higher value of the ratio max_class_pkt/weight_of_the_class with respect to that of cl. Inserting a class with a too high start time into the bucket list corrupts the data structure and may eventually lead to crashes. This patch limits the maximum start time assigned to a class. Signed-off-by: Paolo Valente Signed-off-by: David S. Miller --- Reading git-diff-tree failed