On Thu, 11 Feb 2016 14:58:26 +0530 Vineet Gupta <Vineet.Gupta1@xxxxxxxxxxxx> wrote: > Generic pgtable_trans_huge_deposit()/pgtable_trans_huge_withdraw() > assume pgtable_t to be struct page * which is not true for all arches. > Thus arc, s390, sparch end up with their own copies despite no special > hardware requirements (unlike powerpc). s390 does have a special hardware requirement. pgtable_t is an address for a 2K block of memory. It is *not* equivalent to a struct page * which refers to a 4K block of memory. That has been the whole point to introduce pgtable_t. > It seems massaging the code a bit can make it reusbale. Imho the new code for asm-generic looks fine, as long as the override with __HAVE_ARCH_PGTABLE_DEPOSIT/__HAVE_ARCH_PGTABLE_WITHDRAW continues to work I do not mind. -- blue skies, Martin. "Reality continues to ruin my life." - Calvin. -- 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>