>> >> With CONFIG_SPARSEMEM_EXTREME, the root memory section descriptors >> >> are allocated by slab or bootmem allocator. Also, the descriptors >> >> might have been allocated and initialized by others. However, the >> >> memory chunk allocated in current implementation wouldn't be put >> >> into the available pool if others have allocated memory chunk for >> >> that. >> > >> >Who is others? I assume that we can race in hotplug because other than >> >that this is an early initialization code. How can others race? >> > >> >> I'm sorry that I don't have the real bug against the issue. > >I am not saying the bug is not real. It is just that the changelog >doesn's say how the bug is hit, who is affected and when it has been >introduced. These is essential for stable. > Thanks, Michal. Let me replace "others" with "hotplug" in next revision :-) Thanks, Gavin > >-- >Michal Hocko >SUSE Labs >SUSE LINUX s.r.o. >Lihovarska 1060/12 >190 00 Praha 9 >Czech Republic > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>