diff options
Diffstat (limited to 'include/linux/genhd.h')
| -rw-r--r-- | include/linux/genhd.h | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 62781b452fe9..9de2f51ae935 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -62,17 +62,19 @@ struct hd_struct { sector_t start_sect; sector_t nr_sects; devfs_handle_t de; /* primary (master) devfs entry */ - struct device hd_driverfs_dev; /* support driverfs hiearchy */ + struct device *hd_driverfs_dev; /* support driverfs hiearchy */ }; #define GENHD_FL_REMOVABLE 1 #define GENHD_FL_DRIVERFS 2 #define GENHD_FL_DEVFS 4 #define GENHD_FL_CD 8 +#define GENHD_FL_UP 16 struct gendisk { int major; /* major number of driver */ int first_minor; + int minors; int minor_shift; /* number of times minor is shifted to get real minor */ char disk_name[16]; /* name of major driver */ @@ -88,6 +90,10 @@ struct gendisk { devfs_handle_t disk_de; /* piled higher and deeper */ struct device *driverfs_dev; struct device disk_dev; + + unsigned sync_io; /* RAID */ + unsigned reads, writes; + unsigned rio, wio; }; /* drivers/block/genhd.c */ @@ -260,21 +266,16 @@ struct unixware_disklabel { char *disk_name (struct gendisk *hd, int part, char *buf); extern int rescan_partitions(struct gendisk *disk, struct block_device *bdev); -extern void update_partition(struct gendisk *disk, int part); +extern void add_partition(struct gendisk *, int, sector_t, sector_t); +extern void delete_partition(struct gendisk *, int); -extern struct gendisk *alloc_disk(void); +extern struct gendisk *alloc_disk(int minors); +extern struct gendisk *get_disk(struct gendisk *disk); extern void put_disk(struct gendisk *disk); /* will go away */ extern void blk_set_probe(int major, struct gendisk *(p)(int)); -static inline unsigned int disk_index (kdev_t dev) -{ - int part; - struct gendisk *g = get_gendisk(kdev_t_to_nr(dev), &part); - return g ? (minor(dev) >> g->minor_shift) : 0; -} - #endif #endif |