linux-kernel - Re: [PATCH 07/39] vfs: export vfs

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Message-ID: <CAJfpegt7QYa1SD=uJ84RE9qLbJLMCW+viV=FN_TJJjCK4BERLQ@mail.gmail.com>
Date:   Tue, 19 Jun 2018 16:34:33 +0200
From:   Miklos Szeredi <miklos@...redi.hu>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Al Viro <viro@...iv.linux.org.uk>,
        Miklos Szeredi <mszeredi@...hat.com>,
        overlayfs <linux-unionfs@...r.kernel.org>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 07/39] vfs: export vfs_ioctl() to modules

On Tue, Jun 19, 2018 at 4:24 PM, Christoph Hellwig <hch@...radead.org> wrote:
> On Tue, Jun 19, 2018 at 04:04:41PM +0200, Miklos Szeredi wrote:
>> FS_IOC*
>>
>> Haven't looked deeply.  For now overlayfs just implements
>> FS_IOC_{GET|SET}FLAGS because some of these flags are quite generic
>> and implementing them on the overlay is easy.
>>
>> Yes, turning into a method makes sense.
>
> Do you want to do this or should I send a patch?

Do it.  You are much more familiar with regular fs that implement
these ioctls.  Untangling overlap between FS_IOC_...FLAGS and
FS_IOC_...XATTR looks "interesting".

Thanks,
Miklos