From: Nick Desaulniers <nick.desaulniers@gmail.com>
To: unlisted-recipients:; (no To-header on input)
Cc: "Nick Desaulniers" <nick.desaulniers@gmail.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Dan Williams" <dan.j.williams@intel.com>,
"Michal Hocko" <mhocko@suse.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
"Jan Kara" <jack@suse.cz>, "Jérôme Glisse" <jglisse@redhat.com>,
"Hugh Dickins" <hughd@google.com>,
"Matthew Wilcox" <willy@infradead.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: [PATCH] memory-failure: fix section mismatch
Date: Sat, 3 Mar 2018 23:16:11 -0800 [thread overview]
Message-ID: <20180304071613.16899-1-nick.desaulniers@gmail.com> (raw)
Clang complains when a variable is declared extern twice, but with two
different sections. num_poisoned_pages is marked extern and __read_mostly
in include/linux/swapops.h, but only extern in include/linux/mm.h. Some
c source files must include both, and thus see the conflicting
declarations.
Signed-off-by: Nick Desaulniers <nick.desaulniers@gmail.com>
---
include/linux/mm.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index ad06d42adb1a..bd4bd59f02c1 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2582,7 +2582,7 @@ extern int get_hwpoison_page(struct page *page);
extern int sysctl_memory_failure_early_kill;
extern int sysctl_memory_failure_recovery;
extern void shake_page(struct page *p, int access);
-extern atomic_long_t num_poisoned_pages;
+extern atomic_long_t num_poisoned_pages __read_mostly;
extern int soft_offline_page(struct page *page, int flags);
--
2.14.1
next reply other threads:[~2018-03-04 7:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-04 7:16 Nick Desaulniers [this message]
2018-03-13 14:45 ` Michal Hocko
2018-03-16 23:04 ` Matthias Kaehlcke
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