On 2/3/2025 7:10 PM, Johannes Thumshirn wrote: > But NODATASUM isn't something that is actively recommended unless you > know what you're doing. I thought of your patches as an offload of the > checksum tree to the T10-PI extended sector format You thought right, patches do "offload to T10-PI format" part. That part is generic for any upper-layer user. One only needs to send flag REQ_INTEGRITY_OFFLOAD for that. And for the other part "suppress data-csums at Btrfs level", I thought of using NODATASUM.