openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

[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>
This commit is contained in:
Christoph Lameter 2006-02-07 12:58:30 -08:00 committed by Linus Torvalds
parent a2dfef6947
commit 0df420d8b6
1 changed files with 2 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
mm/hugetlb.c
View File

@ -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 @@ int hugetlb_no_page(struct mm_struct *mm, struct vm_area_struct *vma,
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;
}