linux-kernel - [PATCH 06/13] vmcore: modify vmcore clean-up function to free buffer on 2nd kernel

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Date:	Thu, 14 Feb 2013 19:12:16 +0900
From:	HATAYAMA Daisuke <d.hatayama@...fujitsu.com>
To:	ebiederm@...ssion.com, vgoyal@...hat.com, cpw@....com,
	kumagai-atsushi@....nes.nec.co.jp, lisa.mitchell@...com
Cc:	kexec@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 06/13] vmcore: modify vmcore clean-up function to free buffer
 on 2nd kernel

Vmcore object has buffer on 2nd kernel if it has VMCORE_2ND_KERNEL
type, which needs to be freed.

Signed-off-by: HATAYAMA Daisuke <d.hatayama@...fujitsu.com>
---

 fs/proc/vmcore.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 7e3f922..77e0a0e 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -735,6 +735,15 @@ void vmcore_cleanup(void)
 		struct vmcore *m;
 
 		m = list_entry(pos, struct vmcore, list);
+
+		switch (m->type) {
+		case VMCORE_OLD_MEMORY:
+			break;
+		case VMCORE_2ND_KERNEL:
+			free_pages((unsigned long)m->buf, get_order(m->size));
+			break;
+		}
+
 		list_del(&m->list);
 		kfree(m);
 	}

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