On 3/11/25 2:15 PM, Kent Overstreet wrote: > REQ_FUA|REQ_READ means "do a read that bypasses the controller cache", > the same as writes. > > This is useful for when the filesystem gets a checksum error, it's > possible that a bit was flipped in the controller cache, and when we > retry we want to retry the entire IO, not just from cache. > > The nvme driver already passes through REQ_FUA for reads, not just > writes, so disabling the warning is sufficient to start using it, and > bcachefs is implementing additional retries for checksum errors so can > immediately use it.
This one got effectively nak'ed by various folks here: > Link: > https://lore.kernel.org/linux-block/[email protected]/ yet it's part of this series and in linux-next? Hmm? -- Jens Axboe
