From: NeilBrown <neilb@suse.de>

I really should make this a function of the personality....

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 drivers/md/md.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletion(-)

diff -puN drivers/md/md.c~md-add-4-to-the-list-of-levels-for-which-bitmaps-are-supported drivers/md/md.c
--- devel/drivers/md/md.c~md-add-4-to-the-list-of-levels-for-which-bitmaps-are-supported	2006-03-16 23:32:25.000000000 -0800
+++ devel-akpm/drivers/md/md.c	2006-03-16 23:32:25.000000000 -0800
@@ -762,7 +762,8 @@ static int super_90_validate(mddev_t *md
 
 		if (sb->state & (1<<MD_SB_BITMAP_PRESENT) &&
 		    mddev->bitmap_file == NULL) {
-			if (mddev->level != 1 && mddev->level != 5 && mddev->level != 6
+			if (mddev->level != 1 && mddev->level != 4
+			    && mddev->level != 5 && mddev->level != 6
 			    && mddev->level != 10) {
 				/* FIXME use a better test */
 				printk(KERN_WARNING "md: bitmaps not supported for this level.\n");
_