linux-ext4 - Re: [PATCH 1/5] ext2: remove nobh support

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Date:   Thu, 9 Jun 2022 05:54:19 +0200
From:   Christoph Hellwig <hch@....de>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     Christoph Hellwig <hch@....de>, Jan Kara <jack@...e.com>,
        Dave Kleikamp <shaggy@...nel.org>, linux-ext4@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        jfs-discussion@...ts.sourceforge.net
Subject: Re: [PATCH 1/5] ext2: remove nobh support

On Wed, Jun 08, 2022 at 05:39:59PM +0100, Matthew Wilcox wrote:
> On Wed, Jun 08, 2022 at 05:04:47PM +0200, Christoph Hellwig wrote:
> > @@ -551,7 +548,8 @@ static int parse_options(char *options, struct super_block *sb,
> >  			clear_opt (opts->s_mount_opt, OLDALLOC);
> >  			break;
> >  		case Opt_nobh:
> > -			set_opt (opts->s_mount_opt, NOBH);
> > +			ext2_msg(sb, KERN_INFO,
> > +				"nobh option not supported");
> >  			break;
> 
> This is the only part I wonder about.  Should we just silently accept
> the nobh option instead of emitting a message?

That is how ext2 handles other ignores messages.  Note that it still
accepts the option, it just prints a short line in dmesg.

> Also, is it time to start emitting a message for nfs' intr option?  ;-)

Talk to the nfs folks..