On Fri, Jun 30, 2017 at 01:42:55PM -0700, bcache@lists.ewheeler.net wrote:

From: Liang Chen <redacted>

mutex_destroy does nothing most of time, but it's better to call
it to make the code future proof and it also has some meaning
for like mutex debug.

It shouldn't really - we should get the destroy behavior for free
when doing a slab free of the area.

What issue are you trying to solve?