On Mon, Jan 13, 2025 at 09:32:37AM -0500, Brian Foster wrote: > In turn, this means that extending write zero range would have either > physically zeroed delalloc extents or skipped unwritten blocks, > depending on the situation. Personally, I don't think it really matters > which as there is no real guarantee that "all blocks not previously > written to are unwritten," for example, but rather just that "all blocks > not written to return zeroes on read." Yes. > For that reason, I'm _hoping_ > that we can keep this simple and just deal with some potential spurious > zeroing on folios that are already dirty, but I'm open to arguments > against that. I can't see one. But we really should fine a way to write all this including the arguments for an again down.