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From: "Stephen C. Tweedie" <sct@redhat.com>
To: Pete Zaitcev <zaitcev@redhat.com>
Cc: Arjan van de Ven <arjanv@redhat.com>, Alan Cox <alan@redhat.com>,
	Greg KH <greg@kroah.com>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Rik van Riel <riel@redhat.com>, Stephen Tweedie <sct@redhat.com>
Subject: Re: PF_MEMALLOC in 2.6
Date: 19 Aug 2004 09:46:18 +0100	[thread overview]
Message-ID: <1092905178.2038.0.camel@sisko.scot.redhat.com> (raw)
In-Reply-To: <20040818235523.383737cd@lembas.zaitcev.lan>

Hi,

On Thu, 2004-08-19 at 07:55, Pete Zaitcev wrote:
> The PF_MEMALLOC is required on usb-storage threads in 2.4, because ext3
> will deadlock and otherwise misbehave when it's trying to write out
> dirty pages under memory pressure.

> I received a bug report today from an FC3T1 user with same symptoms
> as 2.4. But I'm entirely clueless in the way VM operates. Comments?


> @@ -285,7 +285,7 @@ static int usb_stor_control_thread(void 
> -	current->flags |= PF_NOFREEZE;
> +	current->flags |= PF_NOFREEZE|PF_MEMALLOC;

Looks entirely reasonable to me.

--Stephen


  parent reply	other threads:[~2004-08-19  8:48 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-08-19  6:55 Pete Zaitcev
2004-08-19  6:59 ` William Lee Irwin III
2004-08-19  8:46 ` Stephen C. Tweedie [this message]
2004-08-19  8:59 ` Oliver Neukum
2004-08-19 12:41 ` Hugh Dickins
2004-08-19 18:25   ` Oliver Neukum
2004-08-20  2:37     ` Nick Piggin
2004-08-20  7:56       ` Oliver Neukum
2004-08-20  8:06         ` Nick Piggin
2004-08-20  8:40           ` Pete Zaitcev
2004-08-20 14:50             ` Oliver Neukum
2004-08-20 15:02               ` Alan Cox
2004-08-20 16:04                 ` Rik van Riel
2004-08-20 16:06                   ` Arjan van de Ven
2004-08-20 16:10                     ` Alan Cox
2004-08-20 16:14                       ` Rik van Riel
2004-08-21  2:03                 ` Nick Piggin
2004-08-20  8:52           ` Oliver Neukum
2004-08-20  9:06             ` Nick Piggin
2004-08-26 21:16             ` Zephaniah E. Hull
2004-08-26 22:04               ` Oliver Neukum
     [not found]                 ` <20040827032554.GB30820@babylon.d2dc.net>
2004-08-27  9:15                   ` Oliver Neukum
2004-08-26 23:41               ` Mikulas Patocka
2004-08-20 10:31   ` Stephen C. Tweedie
2004-08-20 15:34     ` Oliver Neukum

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