dm cache: add io_tracker

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A little class that keeps track of the volume of io that is in flight,
and the length of time that a device has been idle for.

FIXME: rather than jiffes, may be best to use ktime_t (to support faster
devices).

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

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Joe Thornber 2015-05-15 13:45:30 +01:00 • committed by Mike Snitzer

parent fb4100ae7f

commit 77289d3207

1 changed files with 73 additions and 0 deletions

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drivers/md/dm-cache-target.c

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