> However, for anonymous pages, page_address_in_vma only > ever determined whether the page _could_ be part of the > VMA, never whether it actually was. > > The function page_address_in_vma has always given > false positives, which means all of the callers already > check that the page is actually part of the process. I see. > This means we may be able to get away with not verifying > the anon_vma at all. After all, verifying that the VMA > has the anon_vma mapped does not mean the VMA has this > page... > > Doing away with that check gets rid of your locking > conundrum :) I get it, thank you :) I'll rewrite fix patch based on your comments. Thanks, Naoya Horiguchi -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>