On 2020-10-19 12:13:53 [+0200], Peter Zijlstra wrote: > > Mikhail reported a lockdep spat detailing how __zram_bvec_read() and > __zram_bvec_write() use zstrm->lock and zspage->lock in opposite order. > > Reported-by: Mikhail Gavrilov <mikhail.v.gavrilov@xxxxxxxxx> > Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> > Tested-by: Mikhail Gavrilov <mikhail.v.gavrilov@xxxxxxxxx> We have the same patch in RT. I didn't submit it with the other local-lock patches because this splat pops up once pin_tag() is made a sleeping lock. I missed the part where migrate_read_lock() can be a lock. So: Acked-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> Sebastian
