mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE

[karo-tx-linux.git] / mm / ksm.c

diff --git a/mm/ksm.c b/mm/ksm.c
index 3df141e5f3e04a3b377971d0e69b214aafbb4b49..f91ddf5c3688cf4b2a59be7303067003b3ed3346 100644 (file)
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -1898,13 +1898,13 @@ int rmap_walk_ksm(struct page *page, struct rmap_walk_control *rwc)
        int ret = SWAP_AGAIN;
        int search_new_forks = 0;
 
-       VM_BUG_ON(!PageKsm(page));
+       VM_BUG_ON_PAGE(!PageKsm(page), page);
 
        /*
         * Rely on the page lock to protect against concurrent modifications
         * to that page's node of the stable tree.
         */
-       VM_BUG_ON(!PageLocked(page));
+       VM_BUG_ON_PAGE(!PageLocked(page), page);
 
        stable_node = page_stable_node(page);
        if (!stable_node)
@@ -1958,13 +1958,13 @@ void ksm_migrate_page(struct page *newpage, struct page *oldpage)
 {
        struct stable_node *stable_node;
 
-       VM_BUG_ON(!PageLocked(oldpage));
-       VM_BUG_ON(!PageLocked(newpage));
-       VM_BUG_ON(newpage->mapping != oldpage->mapping);
+       VM_BUG_ON_PAGE(!PageLocked(oldpage), oldpage);
+       VM_BUG_ON_PAGE(!PageLocked(newpage), newpage);
+       VM_BUG_ON_PAGE(newpage->mapping != oldpage->mapping, newpage);
 
        stable_node = page_stable_node(newpage);
        if (stable_node) {
-               VM_BUG_ON(stable_node->kpfn != page_to_pfn(oldpage));
+               VM_BUG_ON_PAGE(stable_node->kpfn != page_to_pfn(oldpage), oldpage);
                stable_node->kpfn = page_to_pfn(newpage);
                /*
                 * newpage->mapping was set in advance; now we need smp_wmb()