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target/iblock: Add checks for backend DIF emulation

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Make sure that IBLOCK only attempts to use backend DIF emulation
when it's actually enabled at device level.

Cc: Martin Petersen <martin.petersen@oracle.com>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Nicholas Bellinger 2015-03-27 23:14:16 -07:00
parent ee920469d6
commit 6f16ec43e0
1 changed files with 1 additions and 1 deletions
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2
drivers/target/target_core_iblock.c
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@ -774,7 +774,7 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
sg_num--;
}
if (cmd->prot_type) {
if (cmd->prot_type && dev->dev_attrib.pi_prot_type) {
int rc = iblock_alloc_bip(cmd, bio_start);
if (rc)
goto fail_put_bios;