From 593bc695a1102a540f1613c651e73693b17a7343 Mon Sep 17 00:00:00 2001
From: Alexey Dobriyan <adobriyan@gmail.com>
Date: Tue, 6 Feb 2018 15:37:02 -0800
Subject: fs/proc/vmcore.c: simpler /proc/vmcore cleanup

Iterators aren't necessary as you can just grab the first entry and delete
it until no entries left.

Link: http://lkml.kernel.org/r/20171121191121.GA20757@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 fs/proc/vmcore.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 885d445afa0d..a45f0af22a60 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -1178,18 +1178,16 @@ fs_initcall(vmcore_init);
 /* Cleanup function for vmcore module. */
 void vmcore_cleanup(void)
 {
-	struct list_head *pos, *next;
-
 	if (proc_vmcore) {
 		proc_remove(proc_vmcore);
 		proc_vmcore = NULL;
 	}
 
 	/* clear the vmcore list. */
-	list_for_each_safe(pos, next, &vmcore_list) {
+	while (!list_empty(&vmcore_list)) {
 		struct vmcore *m;
 
-		m = list_entry(pos, struct vmcore, list);
+		m = list_first_entry(&vmcore_list, struct vmcore, list);
 		list_del(&m->list);
 		kfree(m);
 	}
-- 
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