diff options
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 1e0b17c81..e0f578f9b 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -4,6 +4,7 @@ #include <linux/major.h> #include <linux/sched.h> #include <linux/genhd.h> +#include <linux/tqueue.h> /* * Ok, this is an expanded form so that we can use the same @@ -12,7 +13,14 @@ * for read/write completion. */ struct request { - int dev; /* -1 if no request */ + volatile int rq_status; /* should split this into a few status bits */ +#define RQ_INACTIVE (-1) +#define RQ_ACTIVE 1 +#define RQ_SCSI_BUSY 0xffff +#define RQ_SCSI_DONE 0xfffe +#define RQ_SCSI_DISCONNECTING 0xffe0 + + kdev_t rq_dev; int cmd; /* READ or WRITE */ int errors; unsigned long sector; @@ -28,6 +36,8 @@ struct request { struct blk_dev_struct { void (*request_fn)(void); struct request * current_request; + struct request plug; + struct tq_struct plug_tq; }; struct sec_size { @@ -39,6 +49,10 @@ extern struct sec_size * blk_sec[MAX_BLKDEV]; extern struct blk_dev_struct blk_dev[MAX_BLKDEV]; extern struct wait_queue * wait_for_request; extern void resetup_one_dev(struct gendisk *dev, int drive); +extern void unplug_device(void * data); + +/* md needs this function to remap requests */ +extern int md_map (int minor, kdev_t *rdev, unsigned long *rsector, unsigned long size); extern int * blk_size[MAX_BLKDEV]; |