On Sun, Mar 06, 2022 at 10:11:46AM -0700, Jens Axboe wrote:

Yes, I think we should kill it. If we retain the inode hint, the f2fs
doesn't need a any changes. And it should be safe to make the per-file
fcntl hints return EINVAL, which they would on older kernels anyway.
Untested, but something like the below.

I've sent this off to the testing farm this morning, but EINVAL might
be even better:

http://git.infradead.org/users/hch/block.git/shortlog/refs/heads/more-hint-removal