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Date: Thu, 11 Dec 2014 22:03:44 -0500 From: "Martin K. Petersen" <martin.petersen@...cle.com> To: Long Li <longli@...rosoft.com> Cc: "Martin K. Petersen" <martin.petersen@...cle.com>, KY Srinivasan <kys@...rosoft.com>, Haiyang Zhang <haiyangz@...rosoft.com>, "JBottomley\@parallels.com" <JBottomley@...allels.com>, "linux-scsi\@vger.kernel.org" <linux-scsi@...r.kernel.org>, "devel\@linuxdriverproject.org" <devel@...uxdriverproject.org>, "linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] scsi:storvsc enable reading from VPD pages on SPC-2 >>>>> "Long" == Long Li <longli@...rosoft.com> writes: >> Handle the issues or handle WRITE SAME(10/16)? Long> With this patch, the SCSI layer will be able to correctly send Long> WRITE_SAME_16 to the Hyper-V host. It will not send WRITE_SAME_10: Long> it has been disabled in the driver template. Do you want me to Long> send another patch with these details? no_write_same prevents us from attempting to use WRITE SAME(10/16) to zero block ranges. This is completely orthogonal to using the WRITE SAME(10/16) commands with the UNMAP bit set to discard block ranges. The latter is controlled by the logical block provisioning heuristics and is not affected by no_write_same at all. -- Martin K. Petersen Oracle Linux Engineering -- 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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