On Mon, Jun 19, 2017 at 02:33:41PM -0600, Jens Axboe wrote: > That doesn't work, in case it's cleared, or for checking whether it has > been set or not. Oh well, I added a NOT_SET variant for this. See below > for an incremental that adds support for file write hints as well. Use > the file write hint, if we have it, otherwise use the inode provided > one. > > Setting hints on a file propagates to the inode, only if the inode doesn't > currently have a hint set. Question: IFF we can get the per-file hints to propagate to the writeback code (which I think is pretty easy for ext4/xfs/bdev, not sure about btrfs) do we even need the per-inode ones at all?
