Messages in this thread Patch in this message | | | From | Luiz Capitulino <> | Subject | [PATCH 3/5] hugetlb: update_and_free_page(): don't clear PG_reserved bit | Date | Tue, 8 Apr 2014 15:02:18 -0400 |
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Hugepages pages never get the PG_reserved bit set, so don't clear it. But add a warning just in case.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Andrea Arcangeli <aarcange@redhat.com> Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> --- mm/hugetlb.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 8674eda..c295bba 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -617,8 +617,9 @@ static void update_and_free_page(struct hstate *h, struct page *page) for (i = 0; i < pages_per_huge_page(h); i++) { page[i].flags &= ~(1 << PG_locked | 1 << PG_error | 1 << PG_referenced | 1 << PG_dirty | - 1 << PG_active | 1 << PG_reserved | - 1 << PG_private | 1 << PG_writeback); + 1 << PG_active | 1 << PG_private | + 1 << PG_writeback); + WARN_ON(PageReserved(&page[i])); } VM_BUG_ON_PAGE(hugetlb_cgroup_from_page(page), page); set_compound_page_dtor(page, NULL); -- 1.8.1.4
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