From c6d2283068026035a6468aae9dcde953bd7521ac Mon Sep 17 00:00:00 2001
From: Jan Kiszka <jan.kiszka@siemens.com>
Date: Mon, 30 Nov 2009 18:21:20 +0100
Subject: block migration: Cleanup dirty tracking code

This switches the dirty bitmap to a true bitmap, reducing its footprint
(specifically in caches). It moreover fixes off-by-one bugs in
set_dirty_bitmap (nb_sectors+1 were marked) and bdrv_get_dirty (limit
check allowed one sector behind end of drive). And is drops redundant
dirty_tracking field from BlockDriverState.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---
 block_int.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'block_int.h')

diff --git a/block_int.h b/block_int.h
index 7ebe926f5b..907e864101 100644
--- a/block_int.h
+++ b/block_int.h
@@ -168,8 +168,7 @@ struct BlockDriverState {
     int cyls, heads, secs, translation;
     int type;
     char device_name[32];
-    int dirty_tracking;
-    uint8_t *dirty_bitmap;
+    unsigned long *dirty_bitmap;
     BlockDriverState *next;
     void *private;
 };
-- 
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