Re: [linux-pm] Is it supposed to be ok to call del_gendisk while userspace is frozen?

[Matt Reimer]

 On Thu, May 13, 2010 at 2:54 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
> On Thu, 13 May 2010, Matt Reimer wrote:
>
>> So how does the attached patch look?
>>
>> Matt
>>
>>
>> From 20d8340471eb05aa54af1349f4ddccecd9c230c6 Mon Sep 17 00:00:00 2001
>> From: Matt Reimer <mreimer@xxxxxxxxxxxxxx>
>> Date: Thu, 13 May 2010 14:36:54 -0700
>> Subject: [PATCH] fs: prevent hang on suspend/resume when MMC/SD card present
>>
>> Devices can come and go from the MMC/SD bus during suspend or resume,
>> when the writeback thread is frozen, resulting in a hang. So thaw the
>> writeback thread in del_gendisk() to prevent the hang.
>
> I don't see anything wrong with the patch itself, but I dislike the
> description.  Devices can come and go from any hotpluggable bus, not
> just MMC/SD.  That just happens to be the first place the problem was
> observed.

Good point. How about this?

Matt