summaryrefslogtreecommitdiff
path: root/mm
diff options
context:
space:
mode:
authorHugh Dickins <hughd@google.com>2011-06-05 22:03:13 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2011-06-23 15:05:33 -0700
commit2d9da2444b556ba2cfeaa2223f6247f5cc7b6803 (patch)
tree2dae88451a0620f98dc22501d8d8c16cbe0b7e39 /mm
parent097f0612d1769feab15f2bb6b346d7cfd24f1812 (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 8ee3bd8ec5b5..39f86fcc4c94 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1033,10 +1033,10 @@ 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);