On Thu 14-03-13 15:11:09, Gerald Schaefer wrote: > On Thu, 14 Mar 2013 14:14:04 +0100 > Michal Hocko <mhocko@xxxxxxx> wrote: > > > On Tue 12-03-13 19:48:26, Gerald Schaefer wrote: > > > Commit abf09bed3c "s390/mm: implement software dirty bits" introduced > > > another difference in the pte layout vs. the pmd layout on s390, > > > thoroughly breaking the s390 support for hugetlbfs. This requires > > > replacing some more pte_xxx functions in mm/hugetlbfs.c with a > > > huge_pte_xxx version. > > > > > > This patch introduces those huge_pte_xxx functions and their > > > implementation on all architectures supporting hugetlbfs. This change > > > will be a no-op for all architectures other than s390. > > > > > > Signed-off-by: Gerald Schaefer <gerald.schaefer@xxxxxxxxxx> > > > --- > > > arch/ia64/include/asm/hugetlb.h | 36 ++++++++++++++++++++++++ > > > arch/mips/include/asm/hugetlb.h | 36 ++++++++++++++++++++++++ > > > arch/powerpc/include/asm/hugetlb.h | 36 ++++++++++++++++++++++++ > > > arch/s390/include/asm/hugetlb.h | 56 +++++++++++++++++++++++++++++++++++++- > > > arch/s390/include/asm/pgtable.h | 20 -------------- > > > arch/s390/mm/hugetlbpage.c | 2 +- > > > arch/sh/include/asm/hugetlb.h | 36 ++++++++++++++++++++++++ > > > arch/sparc/include/asm/hugetlb.h | 36 ++++++++++++++++++++++++ > > > arch/tile/include/asm/hugetlb.h | 36 ++++++++++++++++++++++++ > > > arch/x86/include/asm/hugetlb.h | 36 ++++++++++++++++++++++++ > > > mm/hugetlb.c | 23 ++++++++-------- > > > 11 files changed, 320 insertions(+), 33 deletions(-) > > > > Ouch, this adds a lot of code that is almost same for all archs except > > for some. Can we just make one common definition and define only those > > that differ, please? > > [...] > > Ok, seems like I misinterpreted the ugliness of HAVE_ARCH_xxx vs. code > duplication. Paul Mundt also suggested going for an asm-generic/hugetlb.h > approach. I'll send a new patch soon. Oh, I have missed that answer so sorry for duplication. Anyway, having asm-generic and HAVE_ARCH_xxx sounds much better to me for this case as the duplication is really big. Thanks -- Michal Hocko SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
