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DISK_MAP_SECTOR_RCU(9) Block Devices DISK_MAP_SECTOR_RCU(9)

NAME

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

COPYRIGHT

April 2019 Kernel Hackers Manual 4.9.