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

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Date:   Mon, 20 Mar 2017 09:07:54 -0400
From:   Michal Hocko <mhocko@...nel.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Jaegeuk Kim <jaegeuk@...nel.org>, linux-next@...r.kernel.org,
        linux-kernel@...r.kernel.org, Chao Yu <yuchao0@...wei.com>
Subject: Re: linux-next: build failure after merge of the akpm tree

On Mon 20-03-17 16:37:35, Stephen Rothwell wrote:
> Hi Andrew,
> 
> After merging the akpm tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
> 
> fs/f2fs/node.c: In function 'init_free_nid_cache':
> fs/f2fs/node.c:2634:25: error: implicit declaration of function 'f2fs_kvzalloc' [-Werror=implicit-function-declaration]
>   nm_i->free_nid_count = f2fs_kvzalloc(nm_i->nat_blocks *
>                          ^
> fs/f2fs/node.c:2634:23: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
>   nm_i->free_nid_count = f2fs_kvzalloc(nm_i->nat_blocks *
>                        ^
> 
> Caused by commit
> 
>   69e5e80117a3 ("mm: introduce kv[mz]alloc helpers")
> 
> interacting with commit
> 
>   c48b15867a2f ("f2fs: skip scanning free nid bitmap of full NAT blocks")
> 
> from the f2fs tree.
> 
> I applied the following fix patch:

yes this is correct. Thanks!

> 
> From: Stephen Rothwell <sfr@...b.auug.org.au>
> Date: Mon, 20 Mar 2017 16:28:21 +1100
> Subject: [PATCH] mm: introduce kv[mz]alloc helpers - f2fs fix up
> 
> Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
> ---
>  fs/f2fs/node.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
> index cdbb05745895..0ea1dca8a0e2 100644
> --- a/fs/f2fs/node.c
> +++ b/fs/f2fs/node.c
> @@ -2631,7 +2631,7 @@ static int init_free_nid_cache(struct f2fs_sb_info *sbi)
>  	if (!nm_i->nat_block_bitmap)
>  		return -ENOMEM;
>  
> -	nm_i->free_nid_count = f2fs_kvzalloc(nm_i->nat_blocks *
> +	nm_i->free_nid_count = kvzalloc(nm_i->nat_blocks *
>  					sizeof(unsigned short), GFP_KERNEL);
>  	if (!nm_i->free_nid_count)
>  		return -ENOMEM;
> -- 
> 2.11.0
> 
> -- 
> Cheers,
> Stephen Rothwell

-- 
Michal Hocko
SUSE Labs