[PATCH] md: set default_bitmap_offset properly in set_array_info
If an array is created using set_array_info, default_bitmap_offset isn't set
properly meaning that an internal bitmap cannot be hot-added until the array
is stopped and re-assembled.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 78c7418..cd12fca 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1028,7 +1028,6 @@
mddev->size = le64_to_cpu(sb->size)/2;
mddev->events = le64_to_cpu(sb->events);
mddev->bitmap_offset = 0;
- mddev->default_bitmap_offset = 0;
mddev->default_bitmap_offset = 1024;
mddev->recovery_cp = le64_to_cpu(sb->resync_offset);
@@ -2932,6 +2931,9 @@
mddev->sb_dirty = 1;
+ mddev->default_bitmap_offset = MD_SB_BYTES >> 9;
+ mddev->bitmap_offset = 0;
+
/*
* Generate a 128 bit UUID
*/