[PATCHv8 4/6] fs: introduce per-io hint support flag

[Christoph Hellwig]

On Thu, Oct 17, 2024 at 09:09:35AM -0700, Keith Busch wrote:
> From: Keith Busch <kbusch at kernel.org>
> 
> A block device may support write hints on a per-io basis. The raw block
> file operations can effectively use these, but real filesystems are not
> ready to make use of this. Provide a file_operations flag to indicate
> support, and set it for the block file operations.

I'm a little worried about the overly generic "hint" think again.  Make
it very explicit about the write streams and this make sense.