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SubjectRe: [PATCH 08/10] mpt3sas: set EEDP-escape-flags for SAS35 devices.
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On 20.10.2016 14:20, Suganath Prabu S wrote:
> An UNMAP command on a PI formatted device will leave the Logical Block
> Application Tag and Logical Block Reference Tag as all F's (for those LBAs
> that are unmapped). To avoid IO errors if those LBAs are subsequently read
> before they are written with valid tag fields, the MPI SCSI IO requests
> need to set the EEDPFlags element EEDP Escape Mode field, Bits [7:6]
> appropriately. A value of 2 should be set to disable all PI checks if the
> Logical Block Application Tag is 0xFFFF for PI types 1 and 2. A value
> of 3 should be set to disable all PI checks if the Logical Block
> Application Tag is 0xFFFF and the Logical Block Reference Tag is
> 0xFFFFFFFF for PI type 3.
>
> Signed-off-by: Chaitra P B <chaitra.basappa@broadcom.com>
> Signed-off-by: Sathya Prakash <sathya.prakash@broadcom.com>
> Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>

Reviewed-by: Tomas Henzl <thenzl@redhat.com>

Tomas

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