diff options
Diffstat (limited to 'include/linux/genhd.h')
| -rw-r--r-- | include/linux/genhd.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h index be4f5e5bfe06..c64e659c9843 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -116,7 +116,7 @@ struct gendisk { int minors; /* maximum number of minors, =1 for * disks that can't be partitioned. */ char disk_name[32]; /* name of major driver */ - struct hd_struct **part; /* [indexed by minor] */ + struct hd_struct **part; /* [indexed by minor - 1] */ struct block_device_operations *fops; struct request_queue *queue; void *private_data; @@ -145,14 +145,21 @@ struct gendisk { #endif }; +static inline struct gendisk *part_to_disk(struct hd_struct *part) +{ + if (likely(part)) + return dev_to_disk((part)->dev.parent); + return NULL; +} + /* * Macros to operate on percpu disk statistics: * * The __ variants should only be called in critical sections. The full * variants disable/enable preemption. */ -static inline struct hd_struct *get_part(struct gendisk *gendiskp, - sector_t sector) +static inline struct hd_struct *disk_map_sector(struct gendisk *gendiskp, + sector_t sector) { struct hd_struct *part; int i; |