tree 83fd5dc45dc925c5b4eb0264c3add96cfaa4cae6
parent 18d8217bc441630c3c5ec7416c5a65c69e8a0979
author Nikanth Karthikesan <knikanth@suse.de> 1252653534 +0200
committer Jens Axboe <jens.axboe@oracle.com> 1252909492 +0200

Seperate read and write statistics of in_flight requests

Currently, there is a single in_flight counter measuring the number of
requests in the request_queue. But some monitoring tools would like to
know how many read requests and write requests are in progress. Split the
current in_flight counter into two seperate counters for read and write.

This information is exported as a sysfs attribute, as changing the
currently available stat files would break the existing tools.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>