kernel_optimize_test/Documentation/block
Michael Callahan bdca3c87fb block: Track DISCARD statistics and output them in stat and diskstat
Add tracking of REQ_OP_DISCARD ios to the partition statistics and
append them to the various stat files in /sys as well as
/proc/diskstats.  These are tracked with the same four stats as reads
and writes:

Number of discard ios completed.
Number of discard ios merged
Number of discard sectors completed
Milliseconds spent on discard requests

This is done via adding a new STAT_DISCARD define to genhd.h and then
using it to index that stat field for discard requests.

tj: Refreshed on top of v4.17 and other previous updates.

Signed-off-by: Michael Callahan <michaelcallahan@fb.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Andy Newell <newella@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-07-18 08:44:22 -06:00
..
00-INDEX
bfq-iosched.txt
biodoc.txt block: remov blk_queue_invalidate_tags 2018-06-15 08:13:35 -06:00
biovecs.txt
capability.txt
cfq-iosched.txt
cmdline-partition.txt
data-integrity.txt
deadline-iosched.txt
ioprio.txt
kyber-iosched.txt
null_blk.txt null_blk: add zone support 2018-07-09 09:07:55 -06:00
pr.txt
queue-sysfs.txt
request.txt
stat.txt block: Track DISCARD statistics and output them in stat and diskstat 2018-07-18 08:44:22 -06:00
switching-sched.txt
writeback_cache_control.txt