Name

probe::ioblock_trace.end — Fires whenever a block I/O transfer is complete.

Synopsis

ioblock_trace.end 

Values

idx

offset into the bio vector array phys_segments - number of segments in this bio after physical address coalescing is performed.

name

name of the probe point

vcnt

bio vector count which represents number of array element (page, offset, length) which makes up this I/O request

bdev_contains

points to the device object which contains the partition (when bio structure represents a partition)

p_start_sect

points to the start sector of the partition structure of the device

ino

i-node number of the mapped file

q

request queue on which this bio was queued.

bdev

target block device

rw

binary trace for read/write request

bytes_done

number of bytes transferred

flags

see below BIO_UPTODATE 0 ok after I/O completion BIO_RW_BLOCK 1 RW_AHEAD set, and read/write would block BIO_EOF 2 out-out-bounds error BIO_SEG_VALID 3 nr_hw_seg valid BIO_CLONED 4 doesn't own data BIO_BOUNCED 5 bio is a bounce bio BIO_USER_MAPPED 6 contains user pages BIO_EOPNOTSUPP 7 not supported

opf

operations and flags

size

total size in bytes

sector

beginning sector for the entire bio

devname

block device name

Context

The process signals the transfer is done.