On Wed, 3 Mar 2010, KAMEZAWA Hiroyuki wrote:
> In patch 01-03, you don't modified panic_on_oom implementation.
> And this patch, you don't modified the return code of memcg's charge code.
> It still returns -ENOMEM.
>
> Then, VM_FAULT_OOM is returned and page_fault_out_of_memory() calles this
> and hit this.
>
> case CONSTRAINT_NONE:
> if (sysctl_panic_on_oom) {
> dump_header(NULL, gfp_mask, order, NULL);
> panic("out of memory. panic_on_oom is selected\n");
> }
>
> The system will panic. A hook, mem_cgroup_oom_called() is for avoiding this.
> memcg's oom doesn't mean memory shortage, just means it his limit.
>
And this is fixed by memcg-fix-oom-kill-behavior-v3.patch in -mm, right?
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