From 2db710cc846d3321a4dc0977fa13769bddba2351 Mon Sep 17 00:00:00 2001
From: Marco Elver <elver@google.com>
Date: Wed, 14 Jul 2021 21:26:40 -0700
Subject: kasan: fix build by including kernel.h

The <linux/kasan.h> header relies on _RET_IP_ being defined, and had been
receiving that definition via inclusion of bug.h which includes kernel.h.
However, since f39650de687e ("kernel.h: split out panic and oops helpers")
that is no longer the case and get the following build error when building
CONFIG_KASAN_HW_TAGS on arm64:

  In file included from arch/arm64/mm/kasan_init.c:10:
  include/linux/kasan.h: In function 'kasan_slab_free':
  include/linux/kasan.h:230:39: error: '_RET_IP_' undeclared (first use in this function)
    230 |   return __kasan_slab_free(s, object, _RET_IP_, init);

Fix it by including kernel.h from kasan.h.

Link: https://lkml.kernel.org/r/20210705072716.2125074-1-elver@google.com
Fixes: f39650de687e ("kernel.h: split out panic and oops helpers")
Signed-off-by: Marco Elver <elver@google.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 include/linux/kasan.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'include')

diff --git a/include/linux/kasan.h b/include/linux/kasan.h
index 5310e217bd74..dd874a1ee862 100644
--- a/include/linux/kasan.h
+++ b/include/linux/kasan.h
@@ -3,6 +3,7 @@
 #define _LINUX_KASAN_H
 
 #include <linux/bug.h>
+#include <linux/kernel.h>
 #include <linux/static_key.h>
 #include <linux/types.h>
 
-- 
cgit v1.2.3


From ab7965de1725cd8514f0edbced5c2fb793846078 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Wed, 14 Jul 2021 21:26:55 -0700
Subject: mm: fix the try_to_unmap prototype for !CONFIG_MMU

Adjust the nommu stub of try_to_unmap to match the changed protype for the
full version.  Turn it into an inline instead of a macro to generally
improve the type checking.

Link: https://lkml.kernel.org/r/20210705053944.885828-1-hch@lst.de
Fixes: 1fb08ac63bee ("mm: rmap: make try_to_unmap() void function")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 include/linux/rmap.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'include')

diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index 83fb86133fe1..c976cc6de257 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -291,7 +291,9 @@ static inline int page_referenced(struct page *page, int is_locked,
 	return 0;
 }
 
-#define try_to_unmap(page, refs) false
+static inline void try_to_unmap(struct page *page, enum ttu_flags flags)
+{
+}
 
 static inline int page_mkclean(struct page *page)
 {
-- 
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