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authorRalph Campbell <rcampbell@nvidia.com>2019-07-26 03:56:49 +0300
committerJason Gunthorpe <jgg@mellanox.com>2019-07-26 18:13:10 +0300
commitf527688d5d8a80d2d1b2c02779105747c2f4f705 (patch)
tree5bffa835da6ceda054b455b24e85fcf3714fb9ef /mm/hmm.c
parentd45d464b118f428229d91769c8a3cc1e2e0bb4d5 (diff)
downloadlinux-f527688d5d8a80d2d1b2c02779105747c2f4f705.tar.xz
mm/hmm: remove hugetlbfs check in hmm_vma_walk_pmd
walk_page_range() will only call hmm_vma_walk_hugetlb_entry() for hugetlbfs pages and doesn't call hmm_vma_walk_pmd() in this case. Therefore, it is safe to remove the check for vma->vm_flags & VM_HUGETLB in hmm_vma_walk_pmd(). Link: https://lore.kernel.org/r/20190726005650.2566-7-rcampbell@nvidia.com Signed-off-by: Ralph Campbell <rcampbell@nvidia.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'mm/hmm.c')
-rw-r--r--mm/hmm.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/mm/hmm.c b/mm/hmm.c
index 1bc014cddd78..6111c0a3c12d 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -630,9 +630,6 @@ again:
if (pmd_none(pmd))
return hmm_vma_walk_hole(start, end, walk);
- if (pmd_huge(pmd) && (range->vma->vm_flags & VM_HUGETLB))
- return hmm_pfns_bad(start, end, walk);
-
if (thp_migration_supported() && is_pmd_migration_entry(pmd)) {
bool fault, write_fault;
unsigned long npages;