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mtip32xx: don't use req->special 

Instead create add to the icmd into struct mtip_cmd which can be unioned
with the scatterlist used for the normal I/O path.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2018-11-09 14:49:01 +01:00 committed by Jens Axboe
parent 55c7bc37e0
commit d85cb20453
2 changed files with 8 additions and 4 deletions
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5
drivers/block/mtip32xx/mtip32xx.c
View File

@ -997,8 +997,6 @@ static int mtip_exec_internal_command(struct mtip_port *port,
return -EFAULT;
}
rq->special = &icmd;
set_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags);
if (fis->command == ATA_CMD_SEC_ERASE_PREP)
@ -1019,6 +1017,7 @@ static int mtip_exec_internal_command(struct mtip_port *port,
/* Copy the command to the command table */
int_cmd = blk_mq_rq_to_pdu(rq);
int_cmd->icmd = &icmd;
memcpy(int_cmd->command, fis, fis_len*4);
rq->timeout = timeout;
@ -3548,8 +3547,8 @@ static blk_status_t mtip_issue_reserved_cmd(struct blk_mq_hw_ctx *hctx,
struct request *rq)
{
struct driver_data *dd = hctx->queue->queuedata;
struct mtip_int_cmd *icmd = rq->special;
struct mtip_cmd *cmd = blk_mq_rq_to_pdu(rq);
struct mtip_int_cmd *icmd = cmd->icmd;
struct mtip_cmd_hdr *hdr =
dd->port->command_list + sizeof(struct mtip_cmd_hdr) * rq->tag;
struct mtip_cmd_sg *command_sg;

7
drivers/block/mtip32xx/mtip32xx.h
View File

@ -321,6 +321,8 @@ struct mtip_cmd_sg {
};
struct mtip_port;
struct mtip_int_cmd;
/* Structure used to describe a command. */
struct mtip_cmd {
void *command; /* ptr to command table entry */
@ -331,7 +333,10 @@ struct mtip_cmd {
int unaligned; /* command is unaligned on 4k boundary */
struct scatterlist sg[MTIP_MAX_SG]; /* Scatter list entries */
union {
struct scatterlist sg[MTIP_MAX_SG]; /* Scatter list entries */
struct mtip_int_cmd *icmd;
};
int retries; /* The number of retries left for this command. */