X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=mm%2Fmemory.c;h=1cc6bfbd872ee17122b6e85859662696f595a363;hb=9a2ad529ed26c4dd81368d0bc87fc77db1febb35;hp=e229970e4223ff02cb24b43b9e47e5ee211555d6;hpb=da01e61428aa2b5c424fddc11178498462d8c77f;p=cascardo%2Flinux.git

diff --git a/mm/memory.c b/mm/memory.c
index e229970e4223..1cc6bfbd872e 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2053,7 +2053,8 @@ static int do_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
 	old_page = vm_normal_page(vma, address, orig_pte);
 	if (!old_page) {
 		/*
-		 * VM_MIXEDMAP !pfn_valid() case
+		 * VM_MIXEDMAP !pfn_valid() case, or VM_SOFTDIRTY clear on a
+		 * VM_PFNMAP VMA.
 		 *
 		 * We should not cow pages in a shared writeable mapping.
 		 * Just mark the pages writable as we can't do any dirty