diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pagewalk.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/pagewalk.h b/include/linux/pagewalk.h index d5d07f7a9c14..745a654c6ea7 100644 --- a/include/linux/pagewalk.h +++ b/include/linux/pagewalk.h @@ -17,7 +17,10 @@ struct mm_walk; * split_huge_page() instead of handling it explicitly. * @pte_entry: if set, called for each non-empty PTE (lowest-level) * entry - * @pte_hole: if set, called for each hole at all levels + * @pte_hole: if set, called for each hole at all levels, + * depth is -1 if not known, 0:PGD, 1:P4D, 2:PUD, 3:PMD + * 4:PTE. Any folded depths (where PTRS_PER_P?D is equal + * to 1) are skipped. * @hugetlb_entry: if set, called for each hugetlb entry * @test_walk: caller specific callback function to determine whether * we walk over the current vma or not. Returning 0 means @@ -43,7 +46,7 @@ struct mm_walk_ops { int (*pte_entry)(pte_t *pte, unsigned long addr, unsigned long next, struct mm_walk *walk); int (*pte_hole)(unsigned long addr, unsigned long next, - struct mm_walk *walk); + int depth, struct mm_walk *walk); int (*hugetlb_entry)(pte_t *pte, unsigned long hmask, unsigned long addr, unsigned long next, struct mm_walk *walk); |