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authorYang Shi <yang.shi@linux.alibaba.com>2019-11-30 17:51:26 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-12-01 06:29:19 -0800
commit30c46382855e0e1b8a5c21331076feb190524546 (patch)
tree32c40f48ec42f268081b041e28076156262b0d08 /mm
parent091e4299544f8658a4b10815da9e4e603e070121 (diff)
mm/rmap.c: use VM_BUG_ON_PAGE() in __page_check_anon_rmap()
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_PAGE(). Link: http://lkml.kernel.org/r/1573157346-111316-1-git-send-email-yang.shi@linux.alibaba.com Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/rmap.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index 0b00c20fdb0b..72a3280b982e 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1075,7 +1075,6 @@ 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.
@@ -1088,9 +1087,9 @@ 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(page_anon_vma(page)->root != vma->anon_vma->root, page);
+ VM_BUG_ON_PAGE(page_to_pgoff(page) != linear_page_index(vma, address),
+ page);
}
/**