linux-ext4 - Re: kernel oops in jbd2_journal_get_descriptor

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Message-ID: <5076E449.5000004@ti.com>
Date:	Thu, 11 Oct 2012 17:22:49 +0200
From:	Clement Gallin-Douathe <c-gallin-douathe@...com>
To:	Jan Kara <jack@...e.cz>
CC:	<tytso@....edu>, <adilger.kernel@...ger.ca>,
	<linux-ext4@...r.kernel.org>
Subject: Re: kernel oops in jbd2_journal_get_descriptor_buffer

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?

regards,

Clement

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

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