OK, got it.
Xiumiao Song From: Cyril Hrubis Date: 2015-08-05 20:16 To: Xiumiao Song CC: [email protected]; [email protected]; Michal Hocko Subject: Re: [LTP] [PATCH] memcg_functinon: testcase_30 function Hi! > Testcase_30 function testing mem_cgroup_force_empty_write > function return -EBUSY,when there is a task in cgroup. > Namely when setting memory.force_empty,it will be failed. > However,kernel 3.16 and above do nothing, > whatever there is a task in cgroup or not. This has been fixed in git by: commit 5c3635d26929a00103f70a54365229449f71a217 Author: Michal Hocko <[email protected]> Date: Thu May 14 16:24:38 2015 +0200 controllers/memcg: fix force_empty testcase_29 and testcase_30 are no longer testing anything because the kernel allows to use force_empty even for memcgs with active tasks since f61c42a7d911 ("memcg: remove tasks/children test from mem_cgroup_force_empty()) kernel commit. If we really want to test this functionality then just expect the success for regular mmap and expect the failure when the charged memory is mlocked. Signed-off-by: Michal Hocko <[email protected]> Signed-off-by: Cyril Hrubis <[email protected]> -- Cyril Hrubis [email protected]
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