NAME¶
probe::ioblock.end - Fires whenever a block I/O transfer is complete.
SYNOPSIS¶
ioblock.end
VALUES¶
None
DESCRIPTION¶
name - name of the probe point
devname - block device name
ino - i-node number of the mapped file
bytes_done - number of
bytes transferred
sector - beginning sector for the entire bio
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
error - 0 on success
rw - binary trace for read/write
request
vcnt - bio vector count which represents number of array
element (page, offset, length) which makes up this I/O request
idx -
offset into the bio vector array
phys_segments - number of segments in
this bio after physical address coalescing is performed.
hw_segments -
number of segments after physical and DMA remapping hardware coalescing is
performed
size - total size in bytes
CONTEXT¶
The process signals the transfer is done.