The __page_check_anon_rmap() just calls two BUG_ON()s protected by
CONFIG_DEBUG_VM, the #ifdef could be eliminated by using VM_BUG_ON().
Signed-off-by: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx>
---
mm/rmap.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/mm/rmap.c b/mm/rmap.c
index d17cbf3..39178eb 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1055,7 +1055,6 @@ static void __page_set_anon_rmap(struct page *page,
static void __page_check_anon_rmap(struct page *page,
struct vm_area_struct *vma, unsigned long address)
{
-#ifdef CONFIG_DEBUG_VM
/*
* The page's anon-rmap details (mapping and index) are guaranteed to
* be set up correctly at this point.
@@ -1068,9 +1067,8 @@ static void __page_check_anon_rmap(struct page *page,
* are initially only visible via the pagetables, and the pte is locked
* over the call to page_add_new_anon_rmap.
*/
- BUG_ON(page_anon_vma(page)->root != vma->anon_vma->root);
- BUG_ON(page_to_pgoff(page) != linear_page_index(vma, address));
-#endif
+ VM_BUG_ON(page_anon_vma(page)->root != vma->anon_vma->root);
+ VM_BUG_ON(page_to_pgoff(page) != linear_page_index(vma, address));
}
/**
--
1.8.3.1
