On Fri 28-08-20 17:27:45, SeongJae Park wrote: > c3dbe541ef77 ("blktrace: Avoid sparse warnings when assigning q->blk_trace") > # commit date: 2020-06-17, author: Jan Kara <jack@xxxxxxx> > # mentions 'blktrace: Protect q->blk_trace with RCU' Backporting this is not needed. As the changelog states, it fixes only sparse warnings, not real bugs... Honza -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR