On 4/4/2015 3:24 PM, Akinobu Mita wrote:
Factor out code duplication in rd_execute_rw() into a helper function
rd_do_prot_rw(). This change is required to minimize the forthcoming
fix in rd_do_prot_rw().
Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Cc: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Cc: Asias He <asias@xxxxxxxxxx>
Cc: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: "James E.J. Bottomley" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
Cc: target-devel@xxxxxxxxxxxxxxx
Cc: linux-scsi@xxxxxxxxxxxxxxx
---
drivers/target/target_core_rd.c | 66 ++++++++++++++++++++---------------------
1 file changed, 32 insertions(+), 34 deletions(-)
diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c
index 98e83ac..4d614c9 100644
--- a/drivers/target/target_core_rd.c
+++ b/drivers/target/target_core_rd.c
@@ -382,6 +382,36 @@ static struct rd_dev_sg_table *rd_get_prot_table(struct rd_dev *rd_dev, u32 page
return NULL;
}
+static sense_reason_t rd_do_prot_rw(struct se_cmd *cmd, bool is_write)
+{
+ struct se_device *se_dev = cmd->se_dev;
+ struct rd_dev *dev = RD_DEV(se_dev);
+ struct rd_dev_sg_table *prot_table;
+ struct scatterlist *prot_sg;
+ u32 sectors = cmd->data_length / se_dev->dev_attrib.block_size;
+ u32 prot_offset, prot_page;
+ u64 tmp;
+ sense_reason_t rc;
+ sense_reason_t (*dif_verify)(struct se_cmd *, sector_t, unsigned int,
+ unsigned int, struct scatterlist *, int) =
+ is_write ? sbc_dif_verify_write : sbc_dif_verify_read;
Hi Akinobu,
I think it would make more sense to pass the dif_verify() function
pointer instead of is_write (only used for that anyway).
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