Date:   Mon, 15 Nov 2021 19:39:35 +0800
From:   Chengguang Xu <cgxu519@mykernel.net>
Reply-To: cgxu519@mykernel.net
To:     "Amir Goldstein" <amir73il@gmail.com>
Cc:     "Miklos Szeredi" <miklos@szeredi.hu>, "Jan Kara" <jack@suse.cz>,
        "linux-fsdevel" <linux-fsdevel@vger.kernel.org>,
        "overlayfs" <linux-unionfs@vger.kernel.org>,
        "linux-kernel" <linux-kernel@vger.kernel.org>
Message-ID: <17d2365388e.10ca295a42584.1997095568982277851@mykernel.net>
In-Reply-To: <CAOQ4uxj4no4zHaOKSXyefUpP+JuMsjeuMPzpZ8BAm1xrs2h+Aw@mail.gmail.com>
References: <20210923130814.140814-1-cgxu519@mykernel.net> <20210923130814.140814-10-cgxu519@mykernel.net> <CAOQ4uxj4no4zHaOKSXyefUpP+JuMsjeuMPzpZ8BAm1xrs2h+Aw@mail.gmail.com>
Subject: Re: [RFC PATCH v5 09/10] fs: introduce new helper
 sync_fs_and_blockdev()
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 ---- =E5=9C=A8 =E6=98=9F=E6=9C=9F=E4=BA=8C, 2021-10-19 15:15:28 Amir Golds=
tein <amir73il@gmail.com> =E6=92=B0=E5=86=99 ----
 > On Thu, Sep 23, 2021 at 4:08 PM Chengguang Xu <cgxu519@mykernel.net> wro=
te:
 > >
 > > Overlayfs needs to call upper layer's ->sync_fs
 > > and __sync_blockdev() to sync metadata during syncfs(2).
 > >
 > > Currently, __sync_blockdev() does not export to module
 > > so introduce new helper sync_fs_and_blockdev() to wrap
 > > those operations.
 >=20
 > Heads up: looks like __sync_blockdev() will be gone soon,
 > but you will have other exported symbols that overlayfs can use
 >=20
 > https://lore.kernel.org/linux-fsdevel/20211019062530.2174626-1-hch@lst.d=
e/T/
 >=20

Hi Amir,

Thanks for the information.

Chengguang,