On Mon, Mar 11, 2024 at 09:07:39AM -0700, Darrick J. Wong wrote: > If at some point iomap_write_end actually starts returning partial write > completions (e.g. you wrote 250 bytes, but for some reason the pagecache > only acknowledges 100 bytes were written) then this code no longer > reverts the iter or truncates posteof pagecache correctly... I don't think it makes sense to return a partial write from iomap_write_end. But to make that clear it really should not return a byte count by a boolean. I've been wanting to make that cleanup for a while, but it would reach all the way into buffer.c.
