linux-kernel - [PATCH v1] Add struct folio to cacheflush.h

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Message-Id: <20220225201248.984169-1-michael.cheng@intel.com>
Date:   Fri, 25 Feb 2022 12:12:48 -0800
From:   Michael Cheng <michael.cheng@...el.com>
To:     linux-kernel@...r.kernel.org
Cc:     willy@...radead.org, michael.cheng@...el.com,
        casey.g.bowman@...el.com, lucas.demarchi@...el.com,
        wayne.boyer@...el.com, tvrtko.ursulin@...ux.intel.com,
        matthew.d.roper@...el.com, geert@...ux-m68k.org
Subject: [PATCH v1] Add struct folio to cacheflush.h

Declare struct folio. This will help resolve warnings on s390 and h8300
platforms.

Suggested-by: Matthew Wilcox (Oracle) <willy@...radead.org>
Signed-off-by: Michael Cheng <michael.cheng@...el.com>
---
 include/linux/cacheflush.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/cacheflush.h b/include/linux/cacheflush.h
index fef8b607f97e..ea32982d6c23 100644
--- a/include/linux/cacheflush.h
+++ b/include/linux/cacheflush.h
@@ -4,6 +4,8 @@
 
 #include <asm/cacheflush.h>
 
+struct folio *folio;
+
 #if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
 #ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_FOLIO
 void flush_dcache_folio(struct folio *folio);
-- 
2.25.1