From: Andrew Morton <akpm@zip.com.au>
To: "Martin J. Bligh" <Martin.Bligh@us.ibm.com>
Cc: Steven Cole <elenstev@mesatop.com>,
lkml <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: MM patches against 2.5.31
Date: Sun, 25 Aug 2002 19:32:35 -0700 [thread overview]
Message-ID: <3D699343.D5343AD4@zip.com.au> (raw)
In-Reply-To: 17830228.1030302537@[10.10.2.3]
"Martin J. Bligh" wrote:
>
> >> > kjournald: page allocation failure. order:0, mode:0x0
> >>
> >> I've seen this before, but am curious how we ever passed
> >> a gfpmask (aka mode) of 0 to __alloc_pages? Can't see anywhere
> >> that does this?
> >
> > Could be anywhere, really. A network interrupt doing GFP_ATOMIC
> > while kjournald is executing. A radix-tree node allocation
> > on the add-to-swap path perhaps. (The swapout failure messages
> > aren't supposed to come out, but mempool_alloc() stomps on the
> > caller's setting of PF_NOWARN.)
> >
> > Or:
> >
> > mnm:/usr/src/25> grep -r GFP_ATOMIC drivers/scsi/*.c | wc -l
> > 89
>
> No, GFP_ATOMIC is not 0:
>
It's mempool_alloc(GFP_NOIO) or such. mempool_alloc() strips
__GFP_WAIT|__GFP_IO on the first attempt.
It also disables the printk, so maybe I just dunno ;) show_stack()
would tell.
WARNING: multiple messages have this Message-ID (diff)
From: Andrew Morton <akpm@zip.com.au>
To: "Martin J. Bligh" <Martin.Bligh@us.ibm.com>
Cc: Steven Cole <elenstev@mesatop.com>,
lkml <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: MM patches against 2.5.31
Date: Sun, 25 Aug 2002 19:32:35 -0700 [thread overview]
Message-ID: <3D699343.D5343AD4@zip.com.au> (raw)
In-Reply-To: 17830228.1030302537@[10.10.2.3]
"Martin J. Bligh" wrote:
>
> >> > kjournald: page allocation failure. order:0, mode:0x0
> >>
> >> I've seen this before, but am curious how we ever passed
> >> a gfpmask (aka mode) of 0 to __alloc_pages? Can't see anywhere
> >> that does this?
> >
> > Could be anywhere, really. A network interrupt doing GFP_ATOMIC
> > while kjournald is executing. A radix-tree node allocation
> > on the add-to-swap path perhaps. (The swapout failure messages
> > aren't supposed to come out, but mempool_alloc() stomps on the
> > caller's setting of PF_NOWARN.)
> >
> > Or:
> >
> > mnm:/usr/src/25> grep -r GFP_ATOMIC drivers/scsi/*.c | wc -l
> > 89
>
> No, GFP_ATOMIC is not 0:
>
It's mempool_alloc(GFP_NOIO) or such. mempool_alloc() strips
__GFP_WAIT|__GFP_IO on the first attempt.
It also disables the printk, so maybe I just dunno ;) show_stack()
would tell.
--
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next prev parent reply other threads:[~2002-08-26 2:17 UTC|newest]
Thread overview: 105+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-22 2:29 MM patches against 2.5.31 Andrew Morton
2002-08-22 2:29 ` Andrew Morton
2002-08-22 11:28 ` Christian Ehrhardt
2002-08-22 11:28 ` Christian Ehrhardt
2002-08-26 1:52 ` Andrew Morton
2002-08-26 1:52 ` Andrew Morton
2002-08-26 9:10 ` Christian Ehrhardt
2002-08-26 9:10 ` Christian Ehrhardt
2002-08-26 14:22 ` Daniel Phillips
2002-08-26 14:22 ` Daniel Phillips
2002-08-26 15:29 ` Christian Ehrhardt
2002-08-26 15:29 ` Christian Ehrhardt
2002-08-26 17:56 ` Daniel Phillips
2002-08-26 17:56 ` Daniel Phillips
2002-08-26 19:24 ` Andrew Morton
2002-08-26 19:24 ` Andrew Morton
2002-08-26 19:34 ` Daniel Phillips
2002-08-26 19:34 ` Daniel Phillips
2002-08-26 19:48 ` Christian Ehrhardt
2002-08-26 19:48 ` Christian Ehrhardt
2002-08-27 9:22 ` Christian Ehrhardt
2002-08-27 9:22 ` Christian Ehrhardt
2002-08-27 19:19 ` Andrew Morton
2002-08-27 19:19 ` Andrew Morton
2002-08-26 20:00 ` Christian Ehrhardt
2002-08-26 20:00 ` Christian Ehrhardt
2002-08-26 20:09 ` Daniel Phillips
2002-08-26 20:09 ` Daniel Phillips
2002-08-26 20:58 ` Christian Ehrhardt
2002-08-26 20:58 ` Christian Ehrhardt
2002-08-27 16:48 ` Daniel Phillips
2002-08-27 16:48 ` Daniel Phillips
2002-08-28 13:14 ` Christian Ehrhardt
2002-08-28 13:14 ` Christian Ehrhardt
2002-08-28 17:18 ` Daniel Phillips
2002-08-28 17:18 ` Daniel Phillips
2002-08-28 17:42 ` Andrew Morton
2002-08-28 17:42 ` Andrew Morton
2002-08-28 20:41 ` Daniel Phillips
2002-08-28 20:41 ` Daniel Phillips
2002-08-28 21:03 ` Andrew Morton
2002-08-28 21:03 ` Andrew Morton
2002-08-28 22:04 ` Daniel Phillips
2002-08-28 22:04 ` Daniel Phillips
2002-08-28 22:39 ` Andrew Morton
2002-08-28 22:39 ` Andrew Morton
2002-08-28 22:57 ` Daniel Phillips
2002-08-28 22:57 ` Daniel Phillips
2002-08-26 21:31 ` Andrew Morton
2002-08-26 21:31 ` Andrew Morton
2002-08-27 3:42 ` Benjamin LaHaise
2002-08-27 3:42 ` Benjamin LaHaise
2002-08-27 4:37 ` Andrew Morton
2002-08-27 4:37 ` Andrew Morton
2002-08-26 17:58 ` Linus Torvalds
2002-08-26 19:28 ` Rik van Riel
2002-08-30 23:03 ` [RFC] [PATCH] Include LRU in page count Daniel Phillips
2002-08-31 16:14 ` Christian Ehrhardt
2002-08-31 17:54 ` Andrew Morton
2002-08-31 19:47 ` Daniel Phillips
2002-08-31 20:26 ` Andrew Morton
2002-08-31 21:05 ` Daniel Phillips
2002-08-31 22:30 ` William Lee Irwin III
2002-09-01 3:36 ` Daniel Phillips
2002-09-01 21:32 ` Daniel Phillips
2002-09-01 22:09 ` Andrew Morton
2002-09-01 22:08 ` Daniel Phillips
2002-09-01 22:20 ` Daniel Phillips
2002-09-01 23:08 ` Andrew Morton
2002-09-01 23:19 ` Daniel Phillips
2002-09-01 23:28 ` William Lee Irwin III
2002-09-01 23:33 ` Daniel Phillips
2002-09-02 0:17 ` Andrew Morton
2002-09-02 0:30 ` Daniel Phillips
2002-09-02 1:50 ` Andrew Morton
2002-09-02 1:08 ` Rik van Riel
2002-09-02 17:23 ` Christian Ehrhardt
2002-09-02 18:01 ` Daniel Phillips
2002-09-05 4:42 ` [RFC] Alternative raceless page free Daniel Phillips
2002-09-05 12:34 ` Christian Ehrhardt
2002-09-05 15:21 ` Daniel Phillips
2002-09-05 16:04 ` Christian Ehrhardt
2002-09-05 16:10 ` Daniel Phillips
2002-09-05 16:31 ` Daniel Phillips
2002-09-05 18:06 ` [RFC] Alternative raceless page free, updated Daniel Phillips
2002-08-22 15:59 ` MM patches against 2.5.31 Steven Cole
2002-08-22 15:59 ` Steven Cole
2002-08-22 16:06 ` Martin J. Bligh
2002-08-22 16:06 ` Martin J. Bligh
2002-08-22 19:45 ` Steven Cole
2002-08-22 19:45 ` Steven Cole
2002-08-26 2:15 ` Andrew Morton
2002-08-26 2:15 ` Andrew Morton
2002-08-26 2:08 ` Martin J. Bligh
2002-08-26 2:08 ` Martin J. Bligh
2002-08-26 2:32 ` Andrew Morton [this message]
2002-08-26 2:32 ` Andrew Morton
2002-08-26 3:06 ` Steven Cole
2002-08-26 3:06 ` Steven Cole
-- strict thread matches above, loose matches on Subject: below --
2002-08-26 22:09 Ed Tomlinson
2002-08-26 22:09 ` Ed Tomlinson
2002-08-26 23:58 ` Andrew Morton
2002-08-26 23:58 ` Andrew Morton
2002-08-27 0:13 ` Rik van Riel
2002-08-27 0:13 ` Rik van Riel
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