Re: [BUG?] register_blkdev: failed to get major for device mapper

From: Andrew Morton
Date: Fri Feb 16 2007 - 19:09:56 EST


On Fri, 16 Feb 2007 14:37:28 +0100
Rolf Eike Beer <eike-kernel@xxxxxxxxx> wrote:

> I can't bring up my machine with root LVM anymore using x86_64. The same
> machine from same kernel tree boots fine as x86. The error message is quoted
> in subject. The tree is at 86a71dbd3e81e8870d0f0e56b87875f57e58222b (for
> those not using git: somewhere after 2.6.20).

Does this fix it? I don't see why it would, but this was recently added.

--- a/block/genhd.c~a
+++ a/block/genhd.c
@@ -61,14 +61,6 @@ int register_blkdev(unsigned int major,
/* temporary */
if (major == 0) {
for (index = ARRAY_SIZE(major_names)-1; index > 0; index--) {
- /*
- * Disallow the LANANA-assigned LOCAL/EXPERIMENTAL
- * majors
- */
- if ((60 <= index && index <= 63) ||
- (120 <= index && index <= 127) ||
- (240 <= index && index <= 254))
- continue;
if (major_names[index] == NULL)
break;
}
_

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