linux-kernel - Re: linux-next: manual merge of the akpm-current tree with the pidfd tree

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Message-ID: <20210225094136.05a1aabe@canb.auug.org.au>
Date:   Thu, 25 Feb 2021 09:41:36 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Christian Brauner <christian.brauner@...ntu.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Miaohe Lin <linmiaohe@...wei.com>
Subject: Re: linux-next: manual merge of the akpm-current tree with the
 pidfd tree

Hi all,

On Mon, 15 Feb 2021 08:54:41 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> 
> On Wed, 27 Jan 2021 22:43:51 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> > 
> > Today's linux-next merge of the akpm-current tree got a conflict in:
> > 
> >   fs/hugetlbfs/inode.c
> > 
> > between commit:
> > 
> >   2f221d6f7b88 ("attr: handle idmapped mounts")
> > 
> > from the pidfd tree and commit:
> > 
> >   57d3629b7a9a ("hugetlbfs: remove useless BUG_ON(!inode) in hugetlbfs_setattr()")
> > 
> > from the akpm-current tree.
> > 
> > I fixed it up (see below) and can carry the fix as necessary. This
> > is now fixed as far as linux-next is concerned, but any non trivial
> > conflicts should be mentioned to your upstream maintainer when your tree
> > is submitted for merging.  You may also want to consider cooperating
> > with the maintainer of the conflicting tree to minimise any particularly
> > complex conflicts.
> > 
> > diff --cc fs/hugetlbfs/inode.c
> > index c5c32eb59498,ca9e25427f2d..000000000000
> > --- a/fs/hugetlbfs/inode.c
> > +++ b/fs/hugetlbfs/inode.c
> > @@@ -760,9 -766,7 +767,7 @@@ static int hugetlbfs_setattr(struct use
> >   	unsigned int ia_valid = attr->ia_valid;
> >   	struct hugetlbfs_inode_info *info = HUGETLBFS_I(inode);
> >   
> > - 	BUG_ON(!inode);
> > - 
> >  -	error = setattr_prepare(dentry, attr);
> >  +	error = setattr_prepare(&init_user_ns, dentry, attr);
> >   	if (error)
> >   		return error;
> >     
> 
> With the merge window about to open, this is a reminder that this
> conflict still exists.
> 
> The akpm-current commit is now
> 
>   b557c21f61f8 ("hugetlbfs: remove useless BUG_ON(!inode) in hugetlbfs_setattr()")

This is now a conflict between the akpm-current tree and Linus' tree.

-- 
Cheers,
Stephen Rothwell

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