On Mon, 2013-10-14 at 15:49 -0700, Roland Dreier wrote:
> From: Roland Dreier <rol...@purestorage.com>
>
> Per SBC-3, since we report ANC_SUP==0 in VPD page B2h, we need to return
> an error (ILLEGAL REQUEST/INVALID FIELD IN CDB) for all WRITE SAME
> requests with ANCHOR==1.
>
> Signed-off-by: Roland Dreier <rol...@purestorage.com>
Applied to target-pending/master.
Thanks Roland!
--nab
> ---
> drivers/target/target_core_sbc.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/target/target_core_sbc.c
> b/drivers/target/target_core_sbc.c
> index 4714c6f8da4b..d9b92b2c524d 100644
> --- a/drivers/target/target_core_sbc.c
> +++ b/drivers/target/target_core_sbc.c
> @@ -263,6 +263,11 @@ sbc_setup_write_same(struct se_cmd *cmd, unsigned char
> *flags, struct sbc_ops *o
> sectors, cmd->se_dev->dev_attrib.max_write_same_len);
> return TCM_INVALID_CDB_FIELD;
> }
> + /* We always have ANC_SUP == 0 so setting ANCHOR is always an error */
> + if (flags[0] & 0x10) {
> + pr_warn("WRITE SAME with ANCHOR not supported\n");
> + return TCM_INVALID_CDB_FIELD;
> + }
> /*
> * Special case for WRITE_SAME w/ UNMAP=1 that ends up getting
> * translated into block discard requests within backend code.
--
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