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

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Date:   Mon, 26 Jun 2017 16:53:43 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        David Miller <davem@...emloft.net>
Cc:     Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Jag Raman <jag.raman@...cle.com>,
        Michal Hocko <mhocko@...e.com>
Subject: linux-next: build failure after merge of the akpm tree

Hi Andrew,

After merging the akpm tree, today's linux-next build (sparc64 defconfig)
failed like this:

arch/sparc/kernel/mdesc.c: In function 'mdesc_kmalloc':
arch/sparc/kernel/mdesc.c:208:48: error: '__GFP_REPEAT' undeclared (first use in this function)
  base = kmalloc(handle_size + 15, GFP_KERNEL | __GFP_REPEAT);
                                                ^

Caused by commit

  726ad49b664b ("mm, tree wide: replace __GFP_REPEAT by __GFP_RETRY_MAYFAIL with more useful semantic")

interacting with commit

  0ab2fcd69dbf ("sparc64: mdesc: use __GFP_REPEAT action modifier for VM allocation")

from the sparc-next tree.

For now I have applied the following (I expect it to be replaced with
something better):

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Mon, 26 Jun 2017 16:47:46 +1000
Subject: [PATCH] paper over the removal of __GFP_REPEAT for now

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 arch/sparc/kernel/mdesc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sparc/kernel/mdesc.c b/arch/sparc/kernel/mdesc.c
index e4b4e790bf89..c9ecd5abf5bf 100644
--- a/arch/sparc/kernel/mdesc.c
+++ b/arch/sparc/kernel/mdesc.c
@@ -205,7 +205,7 @@ static struct mdesc_handle *mdesc_kmalloc(unsigned int mdesc_size)
 	handle_size = (sizeof(struct mdesc_handle) -
 		       sizeof(struct mdesc_hdr) +
 		       mdesc_size);
-	base = kmalloc(handle_size + 15, GFP_KERNEL | __GFP_REPEAT);
+	base = kmalloc(handle_size + 15, GFP_KERNEL /* | __GFP_REPEAT */);
 	if (!base)
 		return NULL;
 
-- 
2.11.0

-- 
Cheers,
Stephen Rothwell