linux-ext4 - Re: [PATCH] ext3: wait on all pending commits in ext3_sync

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Date:	Wed, 14 Jan 2009 11:26:49 -0600
From:	Eric Sandeen <sandeen@...hat.com>
To:	Theodore Tso <tytso@....edu>, Eric Sandeen <sandeen@...hat.com>,
	Jan Kara <jack@...e.cz>, Arthur Jones <ajones@...erbed.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
	"sct@...hat.com" <sct@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ext3: wait on all pending commits in ext3_sync_fs

Theodore Tso wrote:
> On Tue, Jan 13, 2009 at 04:14:11PM -0600, Eric Sandeen wrote:
>> This looks sane to me, and it does fix the below testcase.
>>
>> Care to formally propose it?
> 
> Can we confirm what is being proposed?  From following this thread, I
> think what folks are suggesting is:
> 
> 1)  Revert the current "ext3/4: wait on all pending ocmmits in ext3/4_sync_fs"
> 
> 2)  Apply Jan's patch "jbd[2]: Fix return value of journal_start_commit()"

The above seems like the right plan to me.  It should address the
kernel.org bug about IO on idle partitions.

> 3)  Also apply Jan's patch "jbd2: Skip commit of a transaction without
> any buffers" since it appears to be a good optimization (although it's
> not clear it would happen once we revert (1), above.

Maybe not yet, it could probably use more testing/review/soak.

-Eric

>     	     	   	       	  	      - Ted
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