---

yaml --- r: 164421 b: refs/heads/master c: 8314c4f h: refs/heads/master i: 164419: b3db432 v: v3
git-mirror · Sep 22, 2009 · cafccca · cafccca
1 parent c2f52ed
commit cafccca
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Showing 2 changed files with 3 additions and 5 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7701c9c0f54feb682d0cefa2ae1f4a1e00e0ba09
+refs/heads/master: 8314c4f24a0a5c9b1f7544e9fa83a1d5367ddaa7
diff --git a/trunk/mm/mmap.c b/trunk/mm/mmap.c
@@ -657,17 +657,15 @@ again:			remove_next = 1 + (end > next->vm_end);
 	validate_mm(mm);
 }
 
-/* Flags that can be inherited from an existing mapping when merging */
-#define VM_MERGEABLE_FLAGS (VM_CAN_NONLINEAR)
-
 /*
  * If the vma has a ->close operation then the driver probably needs to release
  * per-vma resources, so we don't attempt to merge those.
  */
 static inline int is_mergeable_vma(struct vm_area_struct *vma,
 			struct file *file, unsigned long vm_flags)
 {
-	if ((vma->vm_flags ^ vm_flags) & ~VM_MERGEABLE_FLAGS)
+	/* VM_CAN_NONLINEAR may get set later by f_op->mmap() */
+	if ((vma->vm_flags ^ vm_flags) & ~VM_CAN_NONLINEAR)
 		return 0;
 	if (vma->vm_file != file)
 		return 0;