From: Jan Kara <jack@suse.cz>
To: Clement Gallin-Douathe <c-gallin-douathe@ti.com>
Cc: Jan Kara <jack@suse.cz>,
tytso@mit.edu, adilger.kernel@dilger.ca,
linux-ext4@vger.kernel.org
Subject: Re: kernel oops in jbd2_journal_get_descriptor_buffer
Date: Thu, 11 Oct 2012 17:28:28 +0200 [thread overview]
Message-ID: <20121011152828.GA8001@quack.suse.cz> (raw)
In-Reply-To: <5076E449.5000004@ti.com>
On Thu 11-10-12 17:22:49, Clement Gallin-Douathe wrote:
> Jan,
>
> Thanks for your answer.
> I have checked and I have no tricks with mapping flags (mount ext4
> options : rw,nosuid,nodev,noatime,errors=continue,data=ordered)
> I have added high mem verification on grow_dev_page function just
> after the page creation with find_or_create_page function.
> PageHighMem() is not null.
> So you think, it's a good idea to look into mm/page_alloc.c and
> verify gfp flags?
Yep. Check what gfp flags are passed to find_or_create_page() and if
there if no __GFP_HIGH set, drill down into find_or_create_page() and
further to mm/page_alloc.c to find out where we get the page from.
Honza
> On 10/11/2012 11:59 AM, Jan Kara wrote:
> >!__GFP_HIGH in particular. So does the device ext4 is mounted on play
> >some tricks with mapping fl
>
>
--
Jan Kara <jack@suse.cz>
SUSE Labs, CR
prev parent reply other threads:[~2012-10-11 15:28 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-11 8:46 kernel oops in jbd2_journal_get_descriptor_buffer Clement Gallin-Douathe
2012-10-11 9:59 ` Jan Kara
2012-10-11 15:22 ` Clement Gallin-Douathe
2012-10-11 15:28 ` Jan Kara [this message]
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