On 1/28/21 3:42 PM, Axel Rasmussen wrote: > From: Peter Xu <peterx@xxxxxxxxxx> > > It is a preparation work to be able to behave differently in the per > architecture huge_pte_alloc() according to different VMA attributes. > > Signed-off-by: Peter Xu <peterx@xxxxxxxxxx> > [axelrasmussen@xxxxxxxxxx: fixed typo in arch/mips/mm/hugetlbpage.c] > Signed-off-by: Axel Rasmussen <axelrasmussen@xxxxxxxxxx> > --- > arch/arm64/mm/hugetlbpage.c | 2 +- > arch/ia64/mm/hugetlbpage.c | 3 ++- > arch/mips/mm/hugetlbpage.c | 4 ++-- > arch/parisc/mm/hugetlbpage.c | 2 +- > arch/powerpc/mm/hugetlbpage.c | 3 ++- > arch/s390/mm/hugetlbpage.c | 2 +- > arch/sh/mm/hugetlbpage.c | 2 +- > arch/sparc/mm/hugetlbpage.c | 2 +- > include/linux/hugetlb.h | 2 +- > mm/hugetlb.c | 6 +++--- > mm/userfaultfd.c | 2 +- > 11 files changed, 16 insertions(+), 14 deletions(-) Sorry for the delay in reviewing. huge_pmd_share() will do a find_vma() to get the vma. So, it would be 'possible' to not add an extra argument to huge_pmd_alloc() and simply do the uffd_disable_huge_pmd_share() check inside vma_shareable. This would reduce the amount of modified code, but would not be as efficient. I prefer passing the vma argument as is done here. Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx> -- Mike Kravetz
