Subject: linux-next: build failure after merge of the akpm-current tree

From: Stephen Rothwell <[email-masked]>
Date: Fri, 17 Dec 2021 23:26:41 +1100

Hi all,

After merging the akpm-current tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

mm/vmalloc.c: In function '__vmalloc_area_node':
mm/vmalloc.c:2983:11: error: implicit declaration of function 'memalloc_nofs_save' [-Werror=implicit-function-declaration]
 2983 |   flags = memalloc_nofs_save();
      |           ^~~~~~~~~~~~~~~~~~
mm/vmalloc.c:2985:11: error: implicit declaration of function 'memalloc_noio_save' [-Werror=implicit-function-declaration]
 2985 |   flags = memalloc_noio_save();
      |           ^~~~~~~~~~~~~~~~~~
mm/vmalloc.c:2995:3: error: implicit declaration of function 'memalloc_nofs_restore' [-Werror=implicit-function-declaration]
 2995 |   memalloc_nofs_restore(flags);
      |   ^~~~~~~~~~~~~~~~~~~~~
mm/vmalloc.c:2997:3: error: implicit declaration of function 'memalloc_noio_restore' [-Werror=implicit-function-declaration]
 2997 |   memalloc_noio_restore(flags);
      |   ^~~~~~~~~~~~~~~~~~~~~

Caused by commit

  0256fe4b2ffb ("mm/vmalloc: alloc GFP_NO{FS,IO} for vmalloc")

I have applied the following fix patch.

From: Stephen Rothwell <[email-masked]>
Date: Fri, 17 Dec 2021 23:15:05 +1100
Subject: [PATCH] mm/vmalloc: alloc GFP_NO{FS,IO} for vmalloc fix

Signed-off-by: Stephen Rothwell <[email-masked]>
---
 mm/vmalloc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 01eabaf5417b..eb6e527a6b77 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -38,6 +38,7 @@
 #include <linux/pgtable.h>
 #include <linux/uaccess.h>
 #include <linux/hugetlb.h>
+#include <linux/sched/mm.h>
 #include <asm/tlbflush.h>
 #include <asm/shmparam.h>
 
-- 
2.33.0

-- 
Cheers,
Stephen Rothwell