linux-ext4 - Re: [10/24] vfs: Add no_nrwrite_index

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Message-ID: <4BFC024A.9090600@jaysonking.com>
Date:	Tue, 25 May 2010 12:00:58 -0500
From:	"Jayson R. King" <dev@...sonking.com>
To:	Greg KH <gregkh@...e.de>
CC:	Christoph Hellwig <hch@...radead.org>,
	linux-kernel@...r.kernel.org, stable@...nel.org,
	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	linux-fsdevel@...r.kernel.org,
	Ext4 Developers List <linux-ext4@...r.kernel.org>,
	Theodore Tso <tytso@....edu>,
	"Jayson R. King" <dev@...sonking.com>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Subject: Re: [10/24] vfs: Add no_nrwrite_index_update writeback control flag

On 05/25/2010 11:52 AM, Greg KH wrote:
> On Tue, May 25, 2010 at 07:12:08AM -0400, Christoph Hellwig wrote:
>> On Mon, May 24, 2010 at 03:28:06PM -0700, Greg KH wrote:
>>> 2.6.27-stable review patch.  If anyone has any objections, please let us know.
>>
>> NACK.  This has been shown to cause severe writeback regression for
>> other filesystems and is beeing reverted in mianline.
> 
> Ok, if I drop this one, I think I need to drop an ext4 patch as well,
> I'll go figure that out and respin a -rc2 with this change in it.

You'd have to drop the next two ext4 -stable patches to get a buildable
kernel if you drop this one. The last of those ext4 patches is the one
which fixes the deadlock from kernel bugzilla #12579.

Jayson
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