From 48f34366eb90ce0fe1f4237f6e3aaa09256ed354 Mon Sep 17 00:00:00 2001
From: Justus Winter <4winter@informatik.uni-hamburg.de>
Date: Sun, 7 Feb 2016 12:54:49 +0100
Subject: vm: remove unused field from struct vm_external

* vm/vm_external.h (struct vm_external): Remove unused field
'existence_count'.
---
 vm/vm_external.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'vm/vm_external.h')

diff --git a/vm/vm_external.h b/vm/vm_external.h
index 55c9e48..4e44ddf 100644
--- a/vm/vm_external.h
+++ b/vm/vm_external.h
@@ -46,9 +46,14 @@ typedef struct vm_external {
 					 * been written to backing
 					 * storage.
 					 */
+#if 0
+	/* XXX: Currently, existence_count is not used.  I guess it
+	   could be useful to get rid of the map if the count drops to
+	   zero.  */
 	int		existence_count;/* Number of bits turned on in
 					 * existence_map.
 					 */
+#endif
 } *vm_external_t;
 
 #define	VM_EXTERNAL_NULL	((vm_external_t) 0)
-- 
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