On Thu, Aug 01, 2024 at 08:10:16AM +0100, Al Viro wrote: > Your patch is basically "fill the page with zeroes before reading anything > into it". It makes KMSAM warning STFU, but it does not fix anything > in any of those cases. Incidentally, it does that before it goes ahead and calls filemap_read_folio(), with ->read_folio() as callback. So if it does make it STFU, the case 1 (->read_folio() not called at all) is out of running. Would be interesting to see if that particular ->read_folio() is returning errors and if so - what errors are actually returned.
