On Wed, Nov 17, 2021 at 03:31:34PM +1100, NeilBrown wrote: > > congestion_wait() in this context is just a sleep - block devices do not > in general support congestion signalling any more. > > The goal here is to wait for any recently written data to get to > storage. This can be achieved using blkdev_issue_flush(). This goes back to commit ae78bf9c4f5fde3c67e2829505f195d7347ce3e4 and looking at that this seems to be correct. It might be worth to reference that commit, though. Otherwise looks good: Reviewed-by: Christoph Hellwig <hch@xxxxxx>
