From 53e87fbb5dc887766229eef3ba8bd8ab8853b066 Mon Sep 17 00:00:00 2001
From: NeilBrown <neilb@suse.de>
Date: Fri, 9 Sep 2005 16:23:58 -0700
Subject: [PATCH] [PATCH] md: choose better default offset for bitmap.

On reflection, a better default location for hot-adding bitmaps with version-1
superblocks is immediately after the superblock.  There might not be much room
there, but there is usually atleast 3k, and that is a good start.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 drivers/md/md.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 30e3624f3d905..fd66c39589420 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -957,8 +957,7 @@ static int super_1_validate(mddev_t *mddev, mdk_rdev_t *rdev)
 		mddev->events = le64_to_cpu(sb->events);
 		mddev->bitmap_offset = 0;
 		mddev->default_bitmap_offset = 0;
-		if (mddev->minor_version == 0)
-			mddev->default_bitmap_offset = -(64*1024)/512;
+		mddev->default_bitmap_offset = 1024;
 		
 		mddev->recovery_cp = le64_to_cpu(sb->resync_offset);
 		memcpy(mddev->uuid, sb->set_uuid, 16);
-- 
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