From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
huge_fault() should try to setup huge page for the pgoff, if possbile.
VM_FAULT_OOM return code means we need to fallback to small pages.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
---
include/linux/mm.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 09530c7..d978de8 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -195,6 +195,7 @@ struct vm_operations_struct {
void (*open)(struct vm_area_struct * area);
void (*close)(struct vm_area_struct * area);
int (*fault)(struct vm_area_struct *vma, struct vm_fault *vmf);
+ int (*huge_fault)(struct vm_area_struct *vma, struct vm_fault *vmf);
/* notification that a previously read-only page is about to become
* writable, if an error is returned it will cause a SIGBUS */
--
1.7.10.4
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