tree 1a574f91ebaa9a2c2a61a85a12a01a655ddbbe25
parent acf7ead2975987d8fa8749f06595123d2f789560
author Jens Axboe <axboe@fb.com> 1414076013 -0600
committer Mohamad Ayyash <mkayyash@google.com> 1425693445 -0800

Fix exit being slowed by disk util stat time

Add a cv/lock to handle exit of the disk util thread. This is a
lot cleaner than the adhoc method that was used before, and it
means that we can signal the exit immediately instead of waiting
for DISKUTIL_MSEC to pass.

Signed-off-by: Jens Axboe <axboe@fb.com>