On Mon, 2015-03-09 at 13:07 -0700, David Rientjes wrote: > If __get_user_pages() is faulting a significant number of hugetlb pages, > usually as the result of mmap(MAP_LOCKED), it can potentially allocate a > very large amount of memory. > > If the process has been oom killed, this will cause a lot of memory to > potentially deplete memory reserves. > > In the same way that commit 4779280d1ea4 ("mm: make get_user_pages() > interruptible") aborted for pending SIGKILLs when faulting non-hugetlb > memory, based on the premise of commit 462e00cc7151 ("oom: stop > allocating user memory if TIF_MEMDIE is set"), hugetlb page faults now > terminate when the process has been oom killed. > > Cc: Greg Thelen <gthelen@xxxxxxxxxx> > Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx> > Cc: Davidlohr Bueso <dave@xxxxxxxxxxxx> > Acked-by: "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx> > Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx> Makes sense. Acked-by: Davidlohr Bueso <dave@xxxxxxxxxxxx> -- 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>