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Date: Thu, 9 Nov 2006 15:13:19 -0500 From: "Monty Montgomery" <monty@...h.org> To: "Jeff Garzik" <jgarzik@...ox.com> Cc: "Tejun Heo" <htejun@...il.com>, "Brice Goglin" <Brice.Goglin@...-lyon.org>, "Jens Axboe" <jens.axboe@...cle.com>, "Gregor Jasny" <gjasny@...glemail.com>, "Linux Kernel" <linux-kernel@...r.kernel.org>, linux-ide@...r.kernel.org, "Douglas Gilbert" <dougg@...que.net> Subject: Re: 2.6.19-rc3 system freezes when ripping with cdparanoia at ioctl(SG_IO) On 11/9/06, Jeff Garzik <jgarzik@...ox.com> wrote: > Mapping 'bidirectional' is a bit difficult. SGIO_TO_FROM_DEVICE is *not* bdirectional! >From the header that defines it: #define SG_DXFER_TO_FROM_DEV -4 /* treated like SG_DXFER_FROM_DEV with the additional property than during indirect IO the user buffer is copied into the kernel buffers before the transfer */ That's pretty darned clear. TO_FROM_DEVICE is a straight-up read. Why the continuing confusion of what this mode is for? > Given that there are stupid apps/libs out there in the field with this > behavior, even if the apps are fixed I think we are stuck with the > stupidities. *ahem* Monty - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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