patch-2.3.9 linux/mm/mlock.c

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diff -u --recursive --new-file v2.3.8/linux/mm/mlock.c linux/mm/mlock.c
@@ -31,7 +31,7 @@
 	vma->vm_offset += vma->vm_start - n->vm_start;
 	n->vm_flags = newflags;
 	if (n->vm_file)
-		n->vm_file->f_count++;
+		atomic_inc(&n->vm_file->f_count);
 	if (n->vm_ops && n->vm_ops->open)
 		n->vm_ops->open(n);
 	insert_vm_struct(current->mm, n);
@@ -52,7 +52,7 @@
 	n->vm_offset += n->vm_start - vma->vm_start;
 	n->vm_flags = newflags;
 	if (n->vm_file)
-		n->vm_file->f_count++;
+		atomic_inc(&n->vm_file->f_count);
 	if (n->vm_ops && n->vm_ops->open)
 		n->vm_ops->open(n);
 	insert_vm_struct(current->mm, n);
@@ -82,7 +82,7 @@
 	right->vm_offset += right->vm_start - left->vm_start;
 	vma->vm_flags = newflags;
 	if (vma->vm_file)
-		vma->vm_file->f_count += 2;
+		atomic_add(2, &vma->vm_file->f_count);
 
 	if (vma->vm_ops && vma->vm_ops->open) {
 		vma->vm_ops->open(left);

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