On Sat, Mar 05, 2022 at 09:12:55AM +1100, Dave Chinner wrote: > AFAICT, all the filesystem/IO path passthrough plumbing for hints is > now gone, and no hardware will ever receive hints. Doesn't this > mean that file_write_hint(), file->f_write_hint and iocb->ki_hint > are now completely unused, too? No, for the reason tha you state below. f2fs still uses it. > AFAICT, this patch leaves just the f2fs allocator usage of > inode->i_rw_hint to select a segment to allocate from as the > remaining consumer of this entire plumbing and user API. Is that > used by applications anywhere, or can that be removed and so the > rest of the infrastructure get removed and the fcntl()s no-op'd or > -EOPNOTSUPP? I was told it is used quite heavily in android.
