From: Glauber Costa Date: Thu, 12 Jan 2012 02:16:06 +0000 (+0000) Subject: net: decrement memcg jump label when limit, not usage, is changed X-Git-Tag: v3.3-rc1~82^2~11 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1398eee08222a038fa5f017900f387e81f6e3ff4;p=pandora-kernel.git net: decrement memcg jump label when limit, not usage, is changed The logic of the current code is that whenever we destroy a cgroup that had its limit set (set meaning different than maximum), we should decrement the jump_label counter. Otherwise we assume it was never incremented. But what the code actually does is test for RES_USAGE instead of RES_LIMIT. Usage being different than maximum is likely to be true most of the time. The effect of this is that the key must become negative, and since the jump_label test says: !!atomic_read(&key->enabled); we'll have jump_labels still on when no one else is using this functionality. Signed-off-by: Glauber Costa CC: David S. Miller Signed-off-by: David S. Miller --- Reading git-diff-tree failed