Re: [PATCH 11/11] protect architectures where THREAD_SIZE >= PAGE_SIZE against fork bombs
From: David Rientjes <rientjes@google.com>
Date: 2012-06-26 04:57:58
Also in:
linux-mm, lkml
On Mon, 25 Jun 2012, Glauber Costa wrote:
quoted hunk ↗ jump to hunk
diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h index ccc1899..914ec07 100644 --- a/include/linux/thread_info.h +++ b/include/linux/thread_info.h@@ -61,6 +61,12 @@ extern long do_no_restart_syscall(struct restart_block *parm); # define THREADINFO_GFP (GFP_KERNEL | __GFP_NOTRACK) #endif +#ifdef CONFIG_CGROUP_MEM_RES_CTLR_KMEM +# define THREADINFO_GFP_ACCOUNTED (THREADINFO_GFP | __GFP_KMEMCG) +#else +# define THREADINFO_GFP_ACCOUNTED (THREADINFO_GFP) +#endif +
This type of requirement is going to become nasty very quickly if nobody can use __GFP_KMEMCG without testing for CONFIG_CGROUP_MEM_RES_CTLR_KMEM. Perhaps define __GFP_KMEMCG to be 0x0 if it's not enabled, similar to how kmemcheck does? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>