linux-ext4 - Re: [PATCH 1/2] ext2: clear uptodate flag on super block I/O error (v2)

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Date:	Fri, 20 Nov 2009 10:23:24 +0100
From:	Jan Kara <jack@...e.cz>
To:	Stephen Hemminger <shemminger@...tta.com>
Cc:	Jan Kara <jack@...e.cz>, linux-ext4@...r.kernel.org
Subject: Re: [PATCH 1/2] ext2: clear uptodate flag on super block I/O error
 (v2)

On Thu 19-11-09 10:13:17, Stephen Hemminger wrote:
> On Thu, 19 Nov 2009 16:19:53 +0100
> Jan Kara <jack@...e.cz> wrote:
> 
> > > +	if (buffer_write_io_error(sbh)) {
> > > +		/*
> > > +		 * This happens if USB or floppy device is yanked out.
> > > +		 * Maybe user put device back in so warn and update again.
> > > +		 */
> > > +		printk(KERN_ERR
> > > +		       "EXT2-fs: previous I/O error to superblock detected\n");
> > > +		clear_buffer_write_io_error(sbh);
> > > +		set_buffer_uptodate(sbh);  
> >   It's not much about puting the device back. It's really just about
> > avoiding the warning in mark_buffer_dirty(). So I'd just silently
> > set_buffer_uptodate and be done with it. For superblock we are darn sure
> > that in memory copy is the one that has the latest data :)
> 
> This code mirrors ext4_commit_super, why should ext2 be any different?
  OK, my remark was mostly about the comment which is different in ext4 ;).
I'll just fixup the comment and merge the patch. Thanks.

									Honza
-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR
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