On (11/26/16 23:41), Minchan Kim wrote: [..] > > > mutex_lock(&bdev->bd_mutex); > > > > why not set it just once, when we allocate queue/disk and configure both > > of them: in zram_add() > > I should have mentioned the reason. > The revalidate_disk reset the BDI_CAP_STABLE_WRITES.
aha. either sets or clears it in blk_integrity_revalidate(),
now I see it.
-ss
