Add cc to Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx> Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx> , who has been worked on this part On 2020-01-14 at 17:16 Li Xinhai wrote: >Checking MPOL_MF_STRICT is ignored for HUGETLB vma according to mbind man >page: > >Notes >MPOL_MF_STRICT is ignored on huge page mappings. > >If MPOL_MF_STRICT is specified alone without any MOVE flag, we should >indicate, from test_walk, that walking this vma should be skipped even if >there are misplaced pages. > >Signed-off-by: Li Xinhai <lixinhai.lxh@xxxxxxxxx> >Cc: Michal Hocko <mhocko@xxxxxxxx> >Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx> >--- > mm/mempolicy.c | 7 +++++++ > 1 file changed, 7 insertions(+) > >diff --git a/mm/mempolicy.c b/mm/mempolicy.c >index 067cf7d..c117b5f 100644 >--- a/mm/mempolicy.c >+++ b/mm/mempolicy.c >@@ -656,6 +656,13 @@ static int queue_pages_test_walk(unsigned long start, unsigned long end, > return 1; > } > >+ /* MPOL_MF_STRICT is ignored for huge page, skip checking >+ * misplaced pages >+ */ >+ if ((flags & MPOL_MF_VALID) == MPOL_MF_STRICT && >+ is_vm_hugetlb_page(vma)) >+ return 1; >+ > /* queue pages from current vma */ > if (flags & MPOL_MF_VALID) > return 0; >-- >1.8.3.1 >
