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Message-Id: <52D3F535020000780011311B@nat28.tlf.novell.com> Date: Mon, 13 Jan 2014 13:16:21 +0000 From: "Jan Beulich" <JBeulich@...e.com> To: "Ian Campbell" <Ian.Campbell@...rix.com> Cc: "Olaf Hering" <olaf@...fle.de>, <david.vrabel@...rix.com>, <xen-devel@...ts.xen.org>, <boris.ostrovsky@...cle.com>, <linux-kernel@...r.kernel.org> Subject: Re: [Xen-devel] [PATCH v2] xen-blkfront: remove type check from blkfront_setup_discard >>> On 13.01.14 at 14:00, Ian Campbell <Ian.Campbell@...rix.com> wrote: > On Mon, 2014-01-13 at 12:34 +0000, Jan Beulich wrote: >> >>> On 13.01.14 at 13:01, Olaf Hering <olaf@...fle.de> wrote: >> > On Mon, Jan 13, Jan Beulich wrote: >> > >> >> You can't do this in one go - the first two and the last one may be >> >> set independently (and are independent in their meaning), and >> >> hence need to be queried independently (xenbus_gather() fails >> >> on the first absent value). >> > >> > Yes, thats the purpose. Since the properties are required its an all or >> > nothing thing. If they are truly optional then blkif.h should be updated >> > to say that. >> >> They _are_ optional. > > But is it true that either they are all present or they are all absent? No, it's not. discard-secure is independent of the other two (but those other two are tied together). Jan -- 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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