On Thu, 24 Dec 2015 14:51:22 +0300 "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx> wrote: > THP is properly handled in munlock_vma_pages_range(). > > It fixes crashes like this: > http://lkml.kernel.org/r/565C5C38.3040705@xxxxxxxxxx > > ... > > --- a/mm/mlock.c > +++ b/mm/mlock.c > @@ -393,6 +393,13 @@ static unsigned long __munlock_pagevec_fill(struct pagevec *pvec, > if (!page || page_zone_id(page) != zoneid) > break; > > + /* > + * Do not use pagevec for PTE-mapped THP, > + * munlock_vma_pages_range() will handle them. > + */ > + if (PageTransCompound(page)) > + break; > + > get_page(page); > /* > * Increase the address that will be returned *before* the I'm trying to work out approximately which patch this patch fixes, and it ain't easy. Help? -- 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>