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Message-ID: <20100324023837.GH4359@suse.de>
Date: Tue, 23 Mar 2010 19:38:37 -0700
From: Greg KH <gregkh@...e.de>
To: Mel Gorman <mel@....ul.ie>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Christian Ehrhardt <ehrhardt@...ux.vnet.ibm.com>,
linux-mm@...ck.org, Nick Piggin <npiggin@...e.de>,
Chris Mason <chris.mason@...cle.com>,
Jens Axboe <jens.axboe@...cle.com>,
linux-kernel@...r.kernel.org, Corrado Zoccolo <czoccolo@...il.com>,
Rik van Riel <riel@...hat.com>,
Johannes Weiner <hannes@...xchg.org>
Subject: Re: [RFC PATCH 0/3] Avoid the use of congestion_wait under zone
pressure
On Mon, Mar 22, 2010 at 11:50:54PM +0000, Mel Gorman wrote:
> 2. TTY using high order allocations more frequently
> fix title: ttyfix
> fixed in mainline? yes, in 2.6.34-rc2
> affects: 2.6.31 to 2.6.34-rc1
>
> 2.6.31 made pty's use the same buffering logic as tty. Unfortunately,
> it was also allowed to make high-order GFP_ATOMIC allocations. This
> triggers some high-order reclaim and introduces some stalls. It's
> fixed in 2.6.34-rc2 but needs back-porting.
It will go to the other stable kernels for their next round of releases
now that it is in Linus's tree.
> Next Steps
> ==========
>
> Jens, any problems with me backporting the async/sync fixes from 2.6.31 to
> 2.6.30.x (assuming that is still maintained, Greg?)?
No, .30 is no longer being maintained.
thanks,
greg k-h
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