disk_map_sector_rcu (9) Linux Manual Page
disk_map_sector_rcu – map sector to partition
Synopsis
struct hd_struct *disk_map_sector_rcu(struct gendisk *disk, sector_t sector);Arguments
disk
-
- gendisk of interest
sector
- sector to map
Description
Find out which partition sector maps to on disk. This is primarily used for stats accounting.
Context
RCU read locked. The returned partition pointer is valid only while preemption is disabled.
Return
Found partition on success, part0 is returned if no partition matches