The patch titled
Subject: mm/page_isolation: fix clang deadcode warning
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
mm-page_isolation-fix-clang-deadcode-warning.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_isolation-fix-clang-deadcode-warning.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Maria Yu <quic_aiquny@xxxxxxxxxxx>
Subject: mm/page_isolation: fix clang deadcode warning
Date: Fri, 21 Oct 2022 18:15:55 +0800
When !CONFIG_VM_BUG_ON, there is warning of
clang-analyzer-deadcode.DeadStores:
Value stored to 'mt' during its initialization is never read.
Link: https://lkml.kernel.org/r/20221021101555.7992-2-quic_aiquny@xxxxxxxxxxx
Signed-off-by: Maria Yu <quic_aiquny@xxxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Doug Berger <opendmb@xxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Zi Yan <ziy@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_isolation.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/page_isolation.c~mm-page_isolation-fix-clang-deadcode-warning
+++ a/mm/page_isolation.c
@@ -330,7 +330,7 @@ static int isolate_single_pageblock(unsi
zone->zone_start_pfn);
if (skip_isolation) {
- int mt = get_pageblock_migratetype(pfn_to_page(isolate_pageblock));
+ int mt __maybe_unused = get_pageblock_migratetype(pfn_to_page(isolate_pageblock));
VM_BUG_ON(!is_migrate_isolate(mt));
} else {
_
Patches currently in -mm which might be from quic_aiquny@xxxxxxxxxxx are
mm-page_isolation-fix-clang-deadcode-warning.patch
