From: Ma Wupeng <mawupeng1@huawei.com>
Date: Fri, 25 Nov 2022 06:54:44 +0000 (+0800)
Subject: mm/memory-failure.c: cleanup in unpoison_memory
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e0ff428042335c7b62785b3cf911c427a618bc86;p=linux.git

mm/memory-failure.c: cleanup in unpoison_memory

If freeit is true, the value of ret must be zero, there is no need to
check the value of freeit after label unlock_mutex.

We can drop variable freeit to do this cleanup.

Link: https://lkml.kernel.org/r/20221125065444.3462681-1-mawupeng1@huawei.com
Signed-off-by: Ma Wupeng <mawupeng1@huawei.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: zhenwei pi <pizhenwei@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 2e62940c7baee..c77a9e37e27e0 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -2338,7 +2338,6 @@ int unpoison_memory(unsigned long pfn)
 	struct page *page;
 	struct page *p;
 	int ret = -EBUSY;
-	int freeit = 0;
 	unsigned long count = 1;
 	bool huge = false;
 	static DEFINE_RATELIMIT_STATE(unpoison_rs, DEFAULT_RATELIMIT_INTERVAL,
@@ -2413,10 +2412,9 @@ int unpoison_memory(unsigned long pfn)
 				goto unlock_mutex;
 			}
 		}
-		freeit = !!TestClearPageHWPoison(p);
 
 		put_page(page);
-		if (freeit) {
+		if (TestClearPageHWPoison(p)) {
 			put_page(page);
 			ret = 0;
 		}
@@ -2424,7 +2422,7 @@ int unpoison_memory(unsigned long pfn)
 
 unlock_mutex:
 	mutex_unlock(&mf_mutex);
-	if (!ret || freeit) {
+	if (!ret) {
 		if (!huge)
 			num_poisoned_pages_sub(pfn, 1);
 		unpoison_pr_info("Unpoison: Software-unpoisoned page %#lx\n",