On 6/3/25 12:47 PM, Caleb Sander Mateos wrote: > blk_rq_integrity_map_user() creates the ubuf iter with ITER_DEST for > write-direction operations and ITER_SOURCE for read-direction ones. > This is backwards; writes use the user buffer as a source for metadata > and reads use it as a destination. Switch to the rq_data_dir() helper, > which maps writes to ITER_SOURCE (WRITE) and reads to ITER_DEST(READ). Was going to ask "how did this ever work without splats", but looks like a fairly recent change AND it's for integrity which isn't widely used. But it does show a gap in testing for sure. -- Jens Axboe
