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Date:      Tue, 29 Feb 2000 18:37:07 +1030
From:      Greg Lehey <grog@lemis.com>
To:        Alfred Perlstein <bright@wintelcom.net>
Cc:        cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/dev/vinum vinumrequest.c
Message-ID:  <20000229183706.D16629@freebie.lemis.com>
In-Reply-To: <20000229002459.B21720@fw.wintelcom.net>
References:  <200002290614.WAA16809@freefall.freebsd.org> <20000229002459.B21720@fw.wintelcom.net>

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On Tuesday, 29 February 2000 at  0:25:00 -0800, Alfred Perlstein wrote:
> * Greg Lehey <grog@FreeBSD.org> [000228 22:45] wrote:
>> grog        2000/02/28 22:14:45 PST
>>
>>   Modified files:
>>     sys/dev/vinum        vinumrequest.c
>>   Log:
>>   launch_requests: If too many requests are active, include PCATCH in
>>   the tsleep call flags.
>>
>>   Submitted-by:  Bernd Walter <ticso@cicely.de>
>
> grrr!
>
>                 while ((drive->active >= DRIVE_MAXACTIVE)   /* it has too much to do already, */
>>> (vinum_conf.active >= VINUM_MAXACTIVE))   /* or too many requests globally */
> -                   tsleep(&launch_requests, PRIBIO, "vinbuf", 0); /* wait for it to subside */
> +                   tsleep(&launch_requests, PRIBIO | PCATCH, "vinbuf", 0); /* wait for it to subside */
>                 drive->active++;
>
> please back this out, i've already fixed this twice, if you actually
> get a signal you'll spin in the kernel.
>
> the correct solution must check the return from tsleep and actually
> do something with an error return, for now we've agreed to ignore
> signals until a safe return can be implemented.  PCATCH must be
> removed.

OK, make a suggestion.

The trouble is, you and Bernd keep asking for opposite things, and I
was getting out of phase on the whole matter.  In any case, another
change I made (MAXREQUESTS = 30000) means that we'll never call tsleep
here.

Greg
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