Boot panic in 2.6.31-rc4

["Américo Wang" <xiyou.wangcong@gmail.com>]

Hi,

There is a regression in current Linus tree, I can't boot my RHEL5 any more.

I can boot it before 2.6.31, I remember, and also the RHEL5's kernel, of course.
But not since 2.6.31-rc2 or -rc3.

(I used RHEL5's config and did "make oldconfig")

There is a boot panic now, it happened just after loading dm-*
modules, and failed
at not being able to find "/dev/VolGroup00", so I think there is something wrong
with the dm-* modules.

I checked the compiled kernel modules, and found the following difference:

--- /proc/self/fd/11	2009-07-27 10:56:06.975928034 +0800
+++ /proc/self/fd/12	2009-07-27 10:56:06.973928034 +0800
@@ -1,16 +1,13 @@
 kernel/drivers/md/dm-crypt.ko
-kernel/drivers/md/dm-emc.ko
-kernel/drivers/md/dm-hp-sw.ko
+kernel/drivers/md/dm-delay.ko
 kernel/drivers/md/dm-log.ko
-kernel/drivers/md/dm-mem-cache.ko
-kernel/drivers/md/dm-message.ko
 kernel/drivers/md/dm-mirror.ko
 kernel/drivers/md/dm-mod.ko
 kernel/drivers/md/dm-multipath.ko
-kernel/drivers/md/dm-raid45.ko  (<=====Note this one!)
-kernel/drivers/md/dm-rdac.ko
-kernel/drivers/md/dm-region_hash.ko
+kernel/drivers/md/dm-queue-length.ko
+kernel/drivers/md/dm-region-hash.ko
 kernel/drivers/md/dm-round-robin.ko
+kernel/drivers/md/dm-service-time.ko
 kernel/drivers/md/dm-snapshot.ko
 kernel/drivers/md/dm-zero.ko
 kernel/drivers/md/faulty.ko
@@ -20,4 +17,4 @@
 kernel/drivers/md/raid10.ko
 kernel/drivers/md/raid1.ko
 kernel/drivers/md/raid456.ko
-kernel/drivers/md/xor.ko
+kernel/drivers/md/raid6_pq.ko

I also tried to make some aliases for dm-region_hash and dm-raid45, but
that still doesn't work...

Am I missing something here? Can anyone help me out?

Thanks!