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

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Message-ID: <20230119083301.5shri6z3y4eivcpy@wittgenstein>
Date:   Thu, 19 Jan 2023 09:33:01 +0100
From:   Christian Brauner <brauner@...nel.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Christian Brauner <christian@...uner.io>,
        Seth Forshee <sforshee@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the vfs-idmapping tree

On Thu, Jan 19, 2023 at 10:26:59AM +1100, Stephen Rothwell wrote:
> Hi all,
> 
> After merging the vfs-idmapping tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
> 
> arch/powerpc/platforms/cell/spufs/inode.c: In function 'spufs_setattr':
> arch/powerpc/platforms/cell/spufs/inode.c:103:22: error: passing argument 1 of 'setattr_copy' from incompatible pointer type [-Werror=incompatible-pointer-types]
>   103 |         setattr_copy(&idmap, inode, attr);
>       |                      ^~~~~~
>       |                      |
>       |                      struct mnt_idmap **
> In file included from arch/powerpc/platforms/cell/spufs/inode.c:12:
> include/linux/fs.h:2941:19: note: expected 'struct mnt_idmap *' but argument is of type 'struct mnt_idmap **'
>  2941 | void setattr_copy(struct mnt_idmap *, struct inode *inode,
>       |                   ^~~~~~~~~~~~~~~~~~
> cc1: all warnings being treated as errors

Ah, cross-compilation...
Thanks for catching and reporting this, Steven!
Fixed now and pushed out.

Christian