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authorDaisuke Nishimura2009-12-15 16:47:12 -0800
committerLinus Torvalds2009-12-16 07:20:07 -0800
commitd31f56dbf8bafaacb0c617f9a6f137498d5c7aed (patch)
tree88d095c2208d27362e58ff7431407040ead9d848 /include/scsi/sg.h
parent57f9fd7d25ac9a0d7e3a4ced580e780ab4524e3b (diff)
memcg: avoid oom-killing innocent task in case of use_hierarchy
task_in_mem_cgroup(), which is called by select_bad_process() to check whether a task can be a candidate for being oom-killed from memcg's limit, checks "curr->use_hierarchy"("curr" is the mem_cgroup the task belongs to). But this check return true(it's false positive) when: <some path>/aa use_hierarchy == 0 <- hitting limit <some path>/aa/00 use_hierarchy == 1 <- the task belongs to This leads to killing an innocent task in aa/00. This patch is a fix for this bug. And this patch also fixes the arg for mem_cgroup_print_oom_info(). We should print information of mem_cgroup which the task being killed, not current, belongs to. Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/scsi/sg.h')
0 files changed, 0 insertions, 0 deletions