mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE

[~andy/linux] / mm / internal.h

diff --git a/mm/internal.h b/mm/internal.h
index a346ba120e4211e49473350c3a933afa26a43625..dc95e979ae562167779f014cc54fe7fe322e7b12 100644 (file)
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -27,8 +27,8 @@ static inline void set_page_count(struct page *page, int v)
  */
 static inline void set_page_refcounted(struct page *page)
 {
-       VM_BUG_ON(PageTail(page));
-       VM_BUG_ON(atomic_read(&page->_count));
+       VM_BUG_ON_PAGE(PageTail(page), page);
+       VM_BUG_ON_PAGE(atomic_read(&page->_count), page);
        set_page_count(page, 1);
 }
 
@@ -46,7 +46,7 @@ static inline void __get_page_tail_foll(struct page *page,
         * speculative page access (like in
         * page_cache_get_speculative()) on tail pages.
         */
-       VM_BUG_ON(atomic_read(&page->first_page->_count) <= 0);
+       VM_BUG_ON_PAGE(atomic_read(&page->first_page->_count) <= 0, page);
        if (get_page_head)
                atomic_inc(&page->first_page->_count);
        get_huge_page_tail(page);
@@ -71,7 +71,7 @@ static inline void get_page_foll(struct page *page)
                 * Getting a normal page or the head of a compound page
                 * requires to already have an elevated page->_count.
                 */
-               VM_BUG_ON(atomic_read(&page->_count) <= 0);
+               VM_BUG_ON_PAGE(atomic_read(&page->_count) <= 0, page);
                atomic_inc(&page->_count);
        }
 }
@@ -173,7 +173,7 @@ static inline void munlock_vma_pages_all(struct vm_area_struct *vma)
 static inline int mlocked_vma_newpage(struct vm_area_struct *vma,
                                    struct page *page)
 {
-       VM_BUG_ON(PageLRU(page));
+       VM_BUG_ON_PAGE(PageLRU(page), page);
 
        if (likely((vma->vm_flags & (VM_LOCKED | VM_SPECIAL)) != VM_LOCKED))
                return 0;