From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Phillips <phillips@istop.com>
Subject: Re: [PATCH] [Request for inclusion] Filesystem in Userspace
Date: Fri, 3 Dec 2004 17:07:45 -0500
Message-ID: <200412031707.46114.phillips@istop.com>
References: <OF28252066.81A6726A-ON88256F50.005D917A-88256F50.005EA7D9@us.ibm.com> <E1CZFJP-0004uZ-00@dorka.pomaz.szeredi.hu> <41ACE816.50104@argo.co.il>
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Cc: Miklos Szeredi <miklos@szeredi.hu>, alan@lxorguk.ukuu.org.uk,
	torvalds@osdl.org, hbryan@us.ibm.com, akpm@osdl.org,
	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	pavel@ucw.cz
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To: Avi Kivity <avi@argo.co.il>
In-Reply-To: <41ACE816.50104@argo.co.il>
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Hi Avi,

On Tuesday 30 November 2004 16:37, Avi Kivity wrote:
> The situation with userspace filesystems is:
>
>   some process allocates memory, blocking on kswapd as memory is full
>   kswapd calls userspace filesystem to free memory
>   userspace filesystem calls kernel, which allocates memory and blocks
> on kswapd
>   eventually all processes in the system block on kswapd
>
> I have observed (and fixed) this on a real system.

What was your fix?

Regards,

Daniel