From: Li Zefan Date: Tue, 10 Sep 2013 03:43:37 +0000 (+0800) Subject: slub: Fix calculation of cpu slabs X-Git-Tag: v3.2.56~186 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=78d926c3e43b2332393d3b203d62934f8fc73401;p=pandora-kernel.git slub: Fix calculation of cpu slabs commit 8afb1474db4701d1ab80cd8251137a3260e6913e upstream. /sys/kernel/slab/:t-0000048 # cat cpu_slabs 231 N0=16 N1=215 /sys/kernel/slab/:t-0000048 # cat slabs 145 N0=36 N1=109 See, the number of slabs is smaller than that of cpu slabs. The bug was introduced by commit 49e2258586b423684f03c278149ab46d8f8b6700 ("slub: per cpu cache for partial pages"). We should use page->pages instead of page->pobjects when calculating the number of cpu partial slabs. This also fixes the mapping of slabs and nodes. As there's no variable storing the number of total/active objects in cpu partial slabs, and we don't have user interfaces requiring those statistics, I just add WARN_ON for those cases. Acked-by: Christoph Lameter Reviewed-by: Wanpeng Li Signed-off-by: Li Zefan Signed-off-by: Pekka Enberg Signed-off-by: Ben Hutchings --- Reading git-diff-tree failed