| Message ID | 62de656111dcdb8d189698316f1c2721753d7c7a.1651998586.git.baolin.wang@linux.alibaba.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Introduce new huge_ptep_get_access_flags() interface | expand |
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index f9c9abb..3f224a7 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -1880,7 +1880,8 @@ static int gather_pte_stats(pmd_t *pmd, unsigned long addr, static int gather_hugetlb_stats(pte_t *pte, unsigned long hmask, unsigned long addr, unsigned long end, struct mm_walk *walk) { - pte_t huge_pte = huge_ptep_get(pte); + pte_t huge_pte = huge_ptep_get_access_flags(pte, + huge_page_size(hstate_vma(walk->vma))); struct numa_maps *md; struct page *page;
The ARM64 platform can support CONT-PTE/PMD size hugetlb, which can contain seravel continuous pte or pmd entries. However current huge_ptep_get() only return one specific pte value for the CONT-PTE or CONT-PMD size hugetlb, which did not take into accounts the subpages' dirty or young flags. So the gather_hugetlb_stats() will miss some dirty hugetlb statistics. Thus change to use huge_ptep_get_access_flags() taking into accounts the subpages' dirty or young flags of a CONT-PTE/PMD size hugetlb, to make the hugetlb statistics more accurate. Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> --- fs/proc/task_mmu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)