| Message ID | 0ec5d75781452af85e6226e1b5940ff557c6f5e7.1660902741.git.baolin.wang@linux.alibaba.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Fix some issues when looking up hugetlb page | expand |
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index efb53ba..fac1b33 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -7000,6 +7000,11 @@ struct page * __weak goto out; } } else { + if (!(flags & FOLL_MIGRATION)) { + page = NULL; + goto out; + } + if (is_hugetlb_entry_migration(pte)) { spin_unlock(ptl); __migration_entry_wait_huge((pte_t *)pmd, ptl); @@ -7038,6 +7043,11 @@ struct page * __weak goto out; } } else { + if (!(flags & FOLL_MIGRATION)) { + page = NULL; + goto out; + } + if (is_hugetlb_entry_migration(pte)) { spin_unlock(ptl); __migration_entry_wait(mm, (pte_t *)pud, ptl);
The hugetlb should keep the same logics with normal page when waiting for a migration pte entry, that means we should also validate if the FOLL_MIGRATION flag is set before waiting for a migration pte entry of a hugetlb page. Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> --- mm/hugetlb.c | 10 ++++++++++ 1 file changed, 10 insertions(+)