diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-04-10 15:13:06 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-04-10 15:13:06 +0200 |
| commit | 523aa3586ffb1fc11a9bf88f77ebaf71a15eb998 (patch) | |
| tree | 1fe96f54e8f1e667798a49ae4b3f951feb136ae0 /mm/hugetlb.c | |
| parent | fd0f50db2eb72555ef8f70af14c1e3ee2079b32c (diff) | |
| parent | 39da7c509acff13fc8cb12ec1bb20337c988ed36 (diff) | |
Merge 4.11-rc6 into driver-core-next
We want the fixes in here as well for testing.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/hugetlb.c')
| -rw-r--r-- | mm/hugetlb.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 3d0aab9ee80d..e5828875f7bb 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -4403,7 +4403,9 @@ int hugetlb_reserve_pages(struct inode *inode, return 0; out_err: if (!vma || vma->vm_flags & VM_MAYSHARE) - region_abort(resv_map, from, to); + /* Don't call region_abort if region_chg failed */ + if (chg >= 0) + region_abort(resv_map, from, to); if (vma && is_vma_resv_set(vma, HPAGE_RESV_OWNER)) kref_put(&resv_map->refs, resv_map_release); return ret; @@ -4651,6 +4653,7 @@ follow_huge_pmd(struct mm_struct *mm, unsigned long address, { struct page *page = NULL; spinlock_t *ptl; + pte_t pte; retry: ptl = pmd_lockptr(mm, pmd); spin_lock(ptl); @@ -4660,12 +4663,13 @@ retry: */ if (!pmd_huge(*pmd)) goto out; - if (pmd_present(*pmd)) { + pte = huge_ptep_get((pte_t *)pmd); + if (pte_present(pte)) { page = pmd_page(*pmd) + ((address & ~PMD_MASK) >> PAGE_SHIFT); if (flags & FOLL_GET) get_page(page); } else { - if (is_hugetlb_entry_migration(huge_ptep_get((pte_t *)pmd))) { + if (is_hugetlb_entry_migration(pte)) { spin_unlock(ptl); __migration_entry_wait(mm, (pte_t *)pmd, ptl); goto retry; |