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Date: Thu, 12 Jun 2003 11:08:39 +0200
From: Steven Scholz <steven.scholz@imc-berlin.de>
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Subject: Re: Stopping the GC thread?
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David Woodhouse schrieb:
> On Wed, 2003-06-11 at 17:03, Steven Scholz wrote:
> 
>>Is it safe to just do a
>>
>>~ # kill -s SIGSTOP `pidof jffs2_gcd_mtd0`
>>
>>even if my root fs is on this JFFS2 partition?
> 
> 
> Yes.
> 
> 
>>(I just tried it now and it seems to work. But IIRC a while ago my 
>>system hung when I did something like that...)
> 
> 
> It shouldn't. The GC thread remains strictly an optimisation (and
> doesn't exist in the eCos port, etc.)
> 

David,

two more questions please.

1.) What happens if I send multiple SIGSTOPs or SIGCONTs to the 
thread? Does she handle (i.e. ignore) that properly?

2.) What happnens when I send a SIGSTOP in the middle of a running GC?
Will it stop immediately? Or will it take a while?
I suppose that a few more sectors will be examened and written... 
(10ms, 100ms, 1000ms ...???)
Will it then just continue after a SIGCONT? Or will start all over again?

Thanks!

Steven