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Message-ID: <CAEivzxepeiBa+uwRKuddCZaxvzqLEj9ZDp4byr0jZkUA94CxSw@mail.gmail.com>
Date:   Fri, 2 Jun 2023 11:55:33 +0200
From:   Aleksandr Mikhalitsyn <aleksandr.mikhalitsyn@...onical.com>
To:     Xiubo Li <xiubli@...hat.com>
Cc:     brauner@...nel.org, stgraber@...ntu.com,
        linux-fsdevel@...r.kernel.org, Ilya Dryomov <idryomov@...il.com>,
        Jeff Layton <jlayton@...nel.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Seth Forshee <sforshee@...nel.org>, ceph-devel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 01/13] fs: export mnt_idmap_get/mnt_idmap_put

On Fri, Jun 2, 2023 at 3:17 AM Xiubo Li <xiubli@...hat.com> wrote:
>
>
> On 5/24/23 23:33, Alexander Mikhalitsyn wrote:
> > These helpers are required to support idmapped mounts in the Cephfs.
> >
> > Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@...onical.com>
> > ---
> >   fs/mnt_idmapping.c            | 2 ++
> >   include/linux/mnt_idmapping.h | 3 +++
> >   2 files changed, 5 insertions(+)
> >
> > diff --git a/fs/mnt_idmapping.c b/fs/mnt_idmapping.c
> > index 4905665c47d0..5a579e809bcf 100644
> > --- a/fs/mnt_idmapping.c
> > +++ b/fs/mnt_idmapping.c
> > @@ -256,6 +256,7 @@ struct mnt_idmap *mnt_idmap_get(struct mnt_idmap *idmap)
> >
> >       return idmap;
> >   }
> > +EXPORT_SYMBOL(mnt_idmap_get);
> >
> >   /**
> >    * mnt_idmap_put - put a reference to an idmapping
> > @@ -271,3 +272,4 @@ void mnt_idmap_put(struct mnt_idmap *idmap)
> >               kfree(idmap);
> >       }
> >   }
> > +EXPORT_SYMBOL(mnt_idmap_put);
> > diff --git a/include/linux/mnt_idmapping.h b/include/linux/mnt_idmapping.h
> > index 057c89867aa2..b8da2db4ecd2 100644
> > --- a/include/linux/mnt_idmapping.h
> > +++ b/include/linux/mnt_idmapping.h
> > @@ -115,6 +115,9 @@ static inline bool vfsgid_eq_kgid(vfsgid_t vfsgid, kgid_t kgid)
> >
> >   int vfsgid_in_group_p(vfsgid_t vfsgid);
> >
> > +struct mnt_idmap *mnt_idmap_get(struct mnt_idmap *idmap);
> > +void mnt_idmap_put(struct mnt_idmap *idmap);
> > +
> >   vfsuid_t make_vfsuid(struct mnt_idmap *idmap,
> >                    struct user_namespace *fs_userns, kuid_t kuid);
> >
>
> Hi Alexander,

Hi, Xiubo!

>
> This needs the "fs/mnt_idmapping.c" maintainer's ack.

Sure, I hope that Christian will take a look.

Thanks,
Alex

>
> Thanks
>
> - Xiubo
>

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