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From:   "Yan, Zheng" <ukernel@gmail.com>
Date:   Wed, 8 Apr 2020 11:10:34 +0800
Message-ID: <CAAM7YAmpDKu_WuroNxZ2y+Po8_oT59Bi4_FOY1LD1ttOO0UDgQ@mail.gmail.com>
Subject: Re: [PATCH v2 2/2] ceph: allow rename operation under different quota realms
To:     Jeff Layton <jlayton@kernel.org>
Cc:     Luis Henriques <lhenriques@suse.com>, Sage Weil <sage@redhat.com>,
        Ilya Dryomov <idryomov@gmail.com>,
        Gregory Farnum <gfarnum@redhat.com>,
        Zheng Yan <zyan@redhat.com>, Frank Schilder <frans@dtu.dk>,
        ceph-devel <ceph-devel@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Wed, Apr 8, 2020 at 7:00 AM Jeff Layton <jlayton@kernel.org> wrote:

>
> Somewhat idle curiosity, but what happens with hardlinked files where
> one dentry is in one quota domain and another is in a different one?
> Does it stay in the old quotarealm?
>
> In any case, this is likely fine as non-hardlinked files are the
> pessimal case anyway.

rstat only tracks primary dentry.  inode is in the quota realm where
its primary linkage is in.