linux-kernel - Re: [RFC PATCH 1/4] fs/ntfs3: Use new api for mounting

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Message-ID: <20210816032351.yo7lkfrwsio3qvjw@kari-VirtualBox>
Date:   Mon, 16 Aug 2021 06:23:51 +0300
From:   Kari Argillander <kari.argillander@...il.com>
To:     Konstantin Komarov <almaz.alexandrovich@...agon-software.com>,
        Christoph Hellwig <hch@....de>
Cc:     ntfs3@...ts.linux.dev, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org,
        Pali Rohár <pali@...nel.org>,
        Matthew Wilcox <willy@...radead.org>
Subject: Re: [RFC PATCH 1/4] fs/ntfs3: Use new api for mounting

On Mon, Aug 16, 2021 at 05:47:00AM +0300, Kari Argillander wrote:
> We have now new mount api as described in Documentation/filesystems. We
> should use it as it gives us some benefits which are desribed here
> https://lore.kernel.org/linux-fsdevel/159646178122.1784947.11705396571718464082.stgit@warthog.procyon.org.uk/
> 
> Nls loading is changed a little bit because new api not have default
> optioni for mount parameters. So we need to load nls table before and
> change that if user specifie someting else.
> 
> Also try to use fsparam_flag_no as much as possible. This is just nice
> little touch and is not mandatory but it should not make any harm. It
> is just convenient that we can use example acl/noacl mount options.
 
I would like that if someone can comment can we do reconfigure so that
we change mount options? Can we example change iocharset and be ok after
that? I have look some other fs drivers and in my eyes it seems to be
quite random if driver should let reconfigure all parameters. Right now
code is that we can reconfigure every mount parameter but I do not know
if this is right call.