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

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Date:   Mon, 20 Mar 2017 09:22:38 -0400
From:   Jaegeuk Kim <jaegeuk@...nel.org>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Andrew Morton <akpm@...ux-foundation.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 03/20, Michal Hocko wrote:
> 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!

Thank you for checking this out.

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