From: eric@eukrea.com (Eric Bénard)
To: linux-arm-kernel@lists.infradead.org
Subject: Hung kernel on SD writeback while suspending to RAM
Date: Thu, 17 Jun 2010 18:25:24 +0200 [thread overview]
Message-ID: <4C1A4C74.1040008@eukrea.com> (raw)
In-Reply-To: <AANLkTikHHcnJygPWKAlDk4NWGBE_fxexeLt3WO0xea0M@mail.gmail.com>
Hi,
Le 15/06/2010 09:58, Alex Gonzalez a ?crit :
> I am looking into suspend to RAM on a Freescale MX51 running a 2.6.31
> kernel. The
> system suspends and resumes OK except when an SD card is mounted.
>
> What happens then is that it finds a page which is being written to disk
> (writeback flag is set), so it waits forever in uninterruptible state
> for the write to finish, which never happens.
>
> I was expecting the filesystem sync previous to the tasks freezing to
> have written all page caches to disk.
>
> Any suggestion as to how to debug this forward?
>
I think you need to enable
[ ] Assume MMC/SD cards are non-removable (DANGEROUS)
in order to be able to suspend / resume a mounted SDCard.
Eric
next prev parent reply other threads:[~2010-06-17 16:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-15 7:58 Hung kernel on SD writeback while suspending to RAM Alex Gonzalez
2010-06-17 16:25 ` Eric Bénard [this message]
2010-06-17 16:54 ` Matt Reimer
2010-06-18 15:28 ` Alex Gonzalez
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