Date: Mon, 11 Mar 2002 09:15:51 -0700 From: "Justin T. Gibbs" <gibbs@scsiguy.com> To: njh@tadpole.co.uk Cc: aic7xxx@FreeBSD.ORG Subject: Re: ahc_platform_abort_scbs() Message-ID: <200203111615.g2BGFpI11861@aslan.scsiguy.com> In-Reply-To: Your message of "Mon, 11 Mar 2002 15:56:56 GMT." <200203111556.g2BFuuw04505@njh-1.tadpole.co.uk>
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>As I said, it isn't the TAILQ_REMOVE that concerns me, it's the
>while(TAILQ_FIRST) when the thing being checked doesn't change in the loop.
I must be reading different code than you. From the 6.2.5 linux driver:
while ((acmd = TAILQ_FIRST(busyq)) != NULL) {
[ other non-relevent stuff]
TAILQ_REMOVE(busyq, acmd, acmd_links.tqe);
[ more non-relevent stuff]
}
We are removing the first element from the TAILQ until all are removed.
The head element will eventually go NULL unless you have created some
kind of list corruption.
>After all how else would you explain the non-terminating loop I see?
Since you've ported this code to Solaris, I wouldn't hazard a guess
unless I had reviewed the code and was at the machine with a debugger.
--
Justin
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