X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=mm%2Frmap.c;h=0ea5d9071b32b967d012f36e600a2ee75acd8f3d;hb=f3683ccd12ac625cee12650ca8595c7b9cb16d77;hp=307b555024efb6787cca6030d1f58060ab4031fe;hpb=bf65921380cd50b87618df550398e06581f4a361;p=deliverable%2Flinux.git

diff --git a/mm/rmap.c b/mm/rmap.c
index 307b555024ef..0ea5d9071b32 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -409,7 +409,7 @@ void unlink_anon_vmas(struct vm_area_struct *vma)
 	list_for_each_entry_safe(avc, next, &vma->anon_vma_chain, same_vma) {
 		struct anon_vma *anon_vma = avc->anon_vma;
 
-		BUG_ON(anon_vma->degree);
+		VM_WARN_ON(anon_vma->degree);
 		put_anon_vma(anon_vma);
 
 		list_del(&avc->same_vma);
@@ -1098,6 +1098,8 @@ void page_move_anon_rmap(struct page *page,
 
 	VM_BUG_ON_PAGE(!PageLocked(page), page);
 	VM_BUG_ON_VMA(!anon_vma, vma);
+	if (IS_ENABLED(CONFIG_DEBUG_VM) && PageTransHuge(page))
+		address &= HPAGE_PMD_MASK;
 	VM_BUG_ON_PAGE(page->index != linear_page_index(vma, address), page);
 
 	anon_vma = (void *) anon_vma + PAGE_MAPPING_ANON;
@@ -1249,7 +1251,7 @@ void page_add_new_anon_rmap(struct page *page,
 	int nr = compound ? hpage_nr_pages(page) : 1;
 
 	VM_BUG_ON_VMA(address < vma->vm_start || address >= vma->vm_end, vma);
-	SetPageSwapBacked(page);
+	__SetPageSwapBacked(page);
 	if (compound) {
 		VM_BUG_ON_PAGE(!PageTransHuge(page), page);
 		/* increment count (starts at -1) */