scsi: block: remove req->special

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Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 3ba37b9..502cbf9 100644 (file)
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -331,7 +331,6 @@ static struct request *blk_mq_rq_ctx_init(struct blk_mq_alloc_data *data,
 #if defined(CONFIG_BLK_DEV_INTEGRITY)
        rq->nr_integrity_segments = 0;
 #endif
-       rq->special = NULL;
        /* tag was already set */
        rq->extra_len = 0;
        WRITE_ONCE(rq->deadline, 0);

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 3db9b1f..c124459 100644 (file)
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1171,8 +1171,6 @@ static blk_status_t sd_setup_read_write_cmnd(struct scsi_cmnd *cmd)
        if (ret != BLK_STS_OK)
                return ret;
 
-       WARN_ON_ONCE(cmd != rq->special);
-
        if (!scsi_device_online(sdp) || sdp->changed) {
                scmd_printk(KERN_ERR, cmd, "device offline or changed\n");
                return BLK_STS_IOERR;

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 338604d..fd1450d 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -216,8 +216,6 @@ struct request {
        unsigned short write_hint;
        unsigned short ioprio;
 
-       void *special;          /* opaque pointer available for LLD use */
-
        unsigned int extra_len; /* length of alignment and padding */
 
        enum mq_rq_state state;