linux-kernel - [PATCH] mm/process_vm_access: Add missing #include <linux/compat.h>

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Date:   Tue, 27 Oct 2020 19:22:46 +0100
From:   Geert Uytterhoeven <geert+renesas@...der.be>
To:     Jens Axboe <axboe@...nel.dk>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Al Viro <viro@...iv.linux.org.uk>, Christoph Hellwig <hch@....de>,
        Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] mm/process_vm_access: Add missing #include <linux/compat.h>

With e.g. m68k/defconfig:

    mm/process_vm_access.c: In function ‘process_vm_rw’:
    mm/process_vm_access.c:277:5: error: implicit declaration of function ‘in_compat_syscall’ [-Werror=implicit-function-declaration]
      277 |     in_compat_syscall());
	  |     ^~~~~~~~~~~~~~~~~

Fix this by adding #include <linux/compat.h>.

Reported-by: noreply@...erman.id.au
Fixes: 38dc5079da7081e8 ("Fix compat regression in process_vm_rw()")
Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
 mm/process_vm_access.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c
index 05676722d9cd6afb..702250f148e73adc 100644
--- a/mm/process_vm_access.c
+++ b/mm/process_vm_access.c
@@ -5,6 +5,7 @@
  * Copyright (C) 2010-2011 Christopher Yeoh <cyeoh@....ibm.com>, IBM Corp.
  */
 
+#include <linux/compat.h>
 #include <linux/mm.h>
 #include <linux/uio.h>
 #include <linux/sched.h>
-- 
2.25.1