Hi Christoph, On 9:46 13/07, Christoph Hellwig wrote: > Hi all, > > this series has two parts: the first one picks up Dave's patch to avoid > invalidation entierly for reads, picked up deep down from the btrfs iomap > thread. The second one falls back to buffered writes if invalidation fails > instead of leaving a stale cache around. Let me know what you think about > this approch. Which kernel version are these changes expected? btrfs dio switch to iomap depends on this. -- Goldwyn