Re: [PATCH] FAT: use blkdev_issue_flush() instead of congestion_wait()

From: Christoph Hellwig
Date: Wed Nov 17 2021 - 05:52:27 EST

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>