From bd858e84d4a179c3030dccba56efb6a93e455c10 Mon Sep 17 00:00:00 2001
From: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Date: Thu, 10 Jul 2014 18:14:20 +0200
Subject: [PATCH] s390/kdump: Return NOTIFY_OK for all actions other than
MEM_GOING_OFFLINE
We only have to check kdump memory for the MEM_GOING_OFFLINE action.
Therefore skip the test and return NOTIFY_OK for all other memory
hotplug actions.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
arch/s390/kernel/setup.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 1e2264b46e4c..ae1d5be7dd88 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -501,6 +501,8 @@ static int kdump_mem_notifier(struct notifier_block *nb,
{
struct memory_notify *arg = data;
+ if (action != MEM_GOING_OFFLINE)
+ return NOTIFY_OK;
if (arg->start_pfn < PFN_DOWN(resource_size(&crashk_res)))
return NOTIFY_BAD;
if (arg->start_pfn > PFN_DOWN(crashk_res.end))
--
2.30.9