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Date:	Wed, 22 Oct 2014 21:50:22 -0400
From:	"Martin K. Petersen" <>
To:	Sitsofe Wheeler <>
Cc:	"Martin K. Petersen" <>,
	"K. Y. Srinivasan" <>,
	Haiyang Zhang <>,
	Christoph Hellwig <>, Hannes Reinecke <>,,,,
	"James E.J. Bottomley" <>
Subject: Re: [PATCH 0/3] scsi: Add Hyper-V logical block provisioning quirks

>>>>> "Sitsofe" == Sitsofe Wheeler <> writes:

Sitsofe> 2. On top of the above, when a disk is "small" (has less than
Sitsofe>    2^32 sectors which is typically < 2 TBytes in size) READ
Sitsofe>    CAPACITY(16) won't be triggered.

static int sd_try_rc16_first(struct scsi_device *sdp)
        if (sdp->host->max_cmd_len < 16)
                return 0;
        if (sdp->try_rc_10_first)
                return 0;
        if (sdp->scsi_level > SCSI_SPC_2)
                return 1;
        if (scsi_device_protection(sdp))
                return 1;
        return 0;

Martin K. Petersen	Oracle Linux Engineering
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