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authorChristoph Lameter <clameter@engr.sgi.com>2006-02-07 12:58:30 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-02-07 16:12:31 -0800
commit0df420d8b6c718d9a5e37531c3a9a6804493e9f4 (patch)
tree6b8edbb55eb8d5e84fb223bbcef7c54789270cde /mm
parent[PATCH] Hugepages need clear_user_highpage() not clear_highpage() (diff)
downloadlinux-dev-0df420d8b6c718d9a5e37531c3a9a6804493e9f4.tar.xz
linux-dev-0df420d8b6c718d9a5e37531c3a9a6804493e9f4.zip
[PATCH] hugetlbpage: return VM_FAULT_OOM on oom
Remove wrong and misleading comments. Return VM_FAULT_OOM if the hugetlbpage fault handler cannot allocate a page. do_no_page will end up doing do_exit(SIGKILL). Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/hugetlb.c17
1 files changed, 2 insertions, 15 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 3255ca420fc8..67f29516662a 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -391,12 +391,7 @@ static int hugetlb_cow(struct mm_struct *mm, struct vm_area_struct *vma,
if (!new_page) {
page_cache_release(old_page);
-
- /* Logically this is OOM, not a SIGBUS, but an OOM
- * could cause the kernel to go killing other
- * processes which won't help the hugepage situation
- * at all (?) */
- return VM_FAULT_SIGBUS;
+ return VM_FAULT_OOM;
}
spin_unlock(&mm->page_table_lock);
@@ -444,15 +439,7 @@ retry:
page = alloc_huge_page(vma, address);
if (!page) {
hugetlb_put_quota(mapping);
- /*
- * No huge pages available. So this is an OOM
- * condition but we do not want to trigger the OOM
- * killer, so we return VM_FAULT_SIGBUS.
- *
- * A program using hugepages may fault with Bus Error
- * because no huge pages are available in the cpuset, per
- * memory policy or because all are in use!
- */
+ ret = VM_FAULT_OOM;
goto out;
}