diff options
| author | Peter Xu <peterx@redhat.com> | 2023-06-29 00:53:05 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-18 20:12:03 +0300 |
| commit | 5502ea44f5ade35d32a397353956bc026b870400 (patch) | |
| tree | ffb442a2b1d749f65834a8f96ef788f36df2e76f /mm/hugetlb.c | |
| parent | 458568c92953dee3716234711f1a2830a35261f3 (diff) | |
| download | linux-5502ea44f5ade35d32a397353956bc026b870400.tar.xz | |
mm/hugetlb: add page_mask for hugetlb_follow_page_mask()
follow_page() doesn't need it, but we'll start to need it when unifying
gup for hugetlb.
Link: https://lkml.kernel.org/r/20230628215310.73782-4-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: James Houghton <jthoughton@google.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Kirill A . Shutemov <kirill@shutemov.name>
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Yang Shi <shy828301@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/hugetlb.c')
| -rw-r--r-- | mm/hugetlb.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index cc87a51ce71a..ab52214b5a75 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -6454,7 +6454,8 @@ static inline bool __follow_hugetlb_must_fault(struct vm_area_struct *vma, } struct page *hugetlb_follow_page_mask(struct vm_area_struct *vma, - unsigned long address, unsigned int flags) + unsigned long address, unsigned int flags, + unsigned int *page_mask) { struct hstate *h = hstate_vma(vma); struct mm_struct *mm = vma->vm_mm; @@ -6504,6 +6505,8 @@ struct page *hugetlb_follow_page_mask(struct vm_area_struct *vma, page = ERR_PTR(ret); goto out; } + + *page_mask = (1U << huge_page_order(h)) - 1; } out: spin_unlock(ptl); |