[PATCH] kdump: Accessing dump file in linear raw format (/dev/oldmem)

      Hariprasad Nellitheertha <hari@in.ibm.com>

This patch contains the code that enables us to access the previous kernel's
memory as /dev/oldmem.

Signed-off-by: Eric Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/Documentation/devices.txt b/Documentation/devices.txt
index bb67cf2..0f51517 100644
--- a/Documentation/devices.txt
+++ b/Documentation/devices.txt
@@ -94,6 +94,7 @@
 		  9 = /dev/urandom	Faster, less secure random number gen.
 		 10 = /dev/aio		Asyncronous I/O notification interface
 		 11 = /dev/kmsg		Writes to this come out as printk's
+		 12 = /dev/oldmem	Access to crash dump from kexec kernel
   1 block	RAM disk
 		  0 = /dev/ram0		First RAM disk
 		  1 = /dev/ram1		Second RAM disk