Date: Sun, 22 Feb 1998 16:34:40 -0800 From: Mike Smith <mike@smith.net.au> To: "Justin T. Gibbs" <gibbs@plutotech.com> Cc: Mike Smith <mike@smith.net.au>, Greg Lehey <grog@lemis.com>, hackers@FreeBSD.ORG Subject: Re: New SoftUpdates test kit Message-ID: <199802230034.QAA08989@dingo.cdrom.com> In-Reply-To: Your message of "Sun, 22 Feb 1998 17:19:08 MST." <199802230022.RAA20633@pluto.plutotech.com>
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> >Ugh. How else is a driver supposed to attach extra information to a > >buf or group of bufs? The b_driver field was the only clean way I > >could implement request fragmentation in the wfd driver. > > >From taking a 2 second look at the code, it seems that the problem is > that you are attempting to store information in struct buf that should > really be encapsulated in the atapi equivalent of "scsi_xfer" or as it > is in CAM, the CCB. This structure would have a buf pointer in it. This means creating a new structure holding a buf reference and an single integer counter, and then managing memory allocation for this new structure type, and passing it around instead of the buf. You're right, it almost certainly is the "correct" solution, but not necessarily the simplest. *sigh* -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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