From 13638944dbc6efe0623b2623fb6eb5c8a69cb34c Mon Sep 17 00:00:00 2001
From: Ingo Weinhold <ingo_weinhold@gmx.de>
Date: Mon, 21 Jun 2010 15:10:37 +0000
Subject: [PATCH] Removed never read VMCache::scan_skip.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37195 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 headers/private/kernel/vm/VMCache.h |  1 -
 src/system/kernel/vm/VMCache.cpp    |  2 --
 src/system/kernel/vm/vm.cpp         | 22 ----------------------
 3 files changed, 25 deletions(-)

diff --git a/headers/private/kernel/vm/VMCache.h b/headers/private/kernel/vm/VMCache.h
index 9b48374810..3870b25a61 100644
--- a/headers/private/kernel/vm/VMCache.h
+++ b/headers/private/kernel/vm/VMCache.h
@@ -171,7 +171,6 @@ public:
 				// TODO: Remove!
 			uint32				page_count;
 			uint32				temporary : 1;
-			uint32				scan_skip : 1;
 			uint32				type : 6;
 
 #if DEBUG_CACHE_LIST
diff --git a/src/system/kernel/vm/VMCache.cpp b/src/system/kernel/vm/VMCache.cpp
index 592d80a9d6..1d75cdf0f1 100644
--- a/src/system/kernel/vm/VMCache.cpp
+++ b/src/system/kernel/vm/VMCache.cpp
@@ -593,7 +593,6 @@ VMCache::Init(uint32 cacheType, uint32 allocationFlags)
 	virtual_end = 0;
 	committed_size = 0;
 	temporary = 0;
-	scan_skip = 0;
 	page_count = 0;
 	type = cacheType;
 	fPageEventWaiters = NULL;
@@ -1282,7 +1281,6 @@ VMCache::Dump(bool showPages) const
 	kprintf("  virtual_base: 0x%Lx\n", virtual_base);
 	kprintf("  virtual_end:  0x%Lx\n", virtual_end);
 	kprintf("  temporary:    %ld\n", temporary);
-	kprintf("  scan_skip:    %ld\n", scan_skip);
 	kprintf("  lock:         %p\n", &fLock);
 #if KDEBUG
 	kprintf("  lock.holder:  %ld\n", fLock.holder);
diff --git a/src/system/kernel/vm/vm.cpp b/src/system/kernel/vm/vm.cpp
index c5051159c8..db78ed93bd 100644
--- a/src/system/kernel/vm/vm.cpp
+++ b/src/system/kernel/vm/vm.cpp
@@ -789,7 +789,6 @@ map_backing_store(VMAddressSpace* addressSpace, VMCache* cache, off_t offset,
 
 		newCache->Lock();
 		newCache->temporary = 1;
-		newCache->scan_skip = cache->scan_skip;
 		newCache->virtual_base = offset;
 		newCache->virtual_end = offset + size;
 
@@ -995,7 +994,6 @@ vm_block_address_range(const char* name, void* address, addr_t size)
 
 	cache->temporary = 1;
 	cache->virtual_end = size;
-	cache->scan_skip = 1;
 	cache->Lock();
 
 	VMArea* area;
@@ -1228,18 +1226,6 @@ vm_create_anonymous_area(team_id team, const char *name, addr_t size,
 		// TODO: This should be done via a method.
 	reservedMemory = 0;
 
-	switch (wiring) {
-		case B_LAZY_LOCK:
-		case B_FULL_LOCK:
-		case B_CONTIGUOUS:
-		case B_ALREADY_WIRED:
-			cache->scan_skip = 1;
-			break;
-		case B_NO_LOCK:
-			cache->scan_skip = 0;
-			break;
-	}
-
 	cache->Lock();
 
 	status = map_backing_store(addressSpace, cache, 0, name, size, wiring,
@@ -1436,8 +1422,6 @@ vm_map_physical_memory(team_id team, const char* name, void** _address,
 	if (status != B_OK)
 		return status;
 
-	// tell the page scanner to skip over this area, it's pages are special
-	cache->scan_skip = 1;
 	cache->virtual_end = size;
 
 	cache->Lock();
@@ -1553,8 +1537,6 @@ vm_map_physical_memory_vecs(team_id team, const char* name, void** _address,
 	if (result != B_OK)
 		return result;
 
-	// tell the page scanner to skip over this area, it's pages are special
-	cache->scan_skip = 1;
 	cache->virtual_end = size;
 
 	cache->Lock();
@@ -1639,9 +1621,6 @@ vm_create_null_area(team_id team, const char* name, void** address,
 	if (status != B_OK)
 		return status;
 
-	// tell the page scanner to skip over this area, no pages will be mapped
-	// here
-	cache->scan_skip = 1;
 	cache->temporary = 1;
 	cache->virtual_end = size;
 
@@ -2162,7 +2141,6 @@ vm_copy_on_write_area(VMCache* lowerCache)
 	upperCache->Lock();
 
 	upperCache->temporary = 1;
-	upperCache->scan_skip = lowerCache->scan_skip;
 	upperCache->virtual_base = lowerCache->virtual_base;
 	upperCache->virtual_end = lowerCache->virtual_end;