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authorHugh Dickins <hughd@google.com>2011-06-05 22:03:13 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2011-06-23 15:24:06 -0700
commit263b8d5b3b03cc8b12fd9c87c27c76d30b22799e (patch)
tree5920e33f3ad17b9a55e2c42fa3d801f2dc314aab /mm
parent8354a9e00afb022f6b508bd7d6bd74daebb8b751 (diff)
mm: fix ENOSPC returned by handle_mm_fault()
commit e0dcd8a05be438b3d2e49ef61441ea3a463663f8 upstream. Al Viro observes that in the hugetlb case, handle_mm_fault() may return a value of the kind ENOSPC when its caller is expecting a value of the kind VM_FAULT_SIGBUS: fix alloc_huge_page()'s failure returns. Signed-off-by: Hugh Dickins <hughd@google.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'mm')
-rw-r--r--mm/hugetlb.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index f5a106eeb2bd..0cf9863801f6 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -995,10 +995,10 @@ static struct page *alloc_huge_page(struct vm_area_struct *vma,
*/
chg = vma_needs_reservation(h, vma, addr);
if (chg < 0)
- return ERR_PTR(chg);
+ return ERR_PTR(-VM_FAULT_OOM);
if (chg)
if (hugetlb_get_quota(inode->i_mapping, chg))
- return ERR_PTR(-ENOSPC);
+ return ERR_PTR(-VM_FAULT_SIGBUS);
spin_lock(&hugetlb_lock);
page = dequeue_huge_page_vma(h, vma, addr, avoid_reserve);