On Tue, Dec 19, 2023 at 12:41:37PM +0000, John Garry wrote: > How about something based on fcntl, like below? We will prob also require > some per-FS flag for enabling atomic writes without HW support. That flag > might be also useful for XFS for differentiating forcealign for atomic > writes with just forcealign. I would have just exposed it through a user visible flag instead of adding yet another ioctl/fcntl opcode and yet another method. And yes, for anything that doesn't always support atomic writes it would need to be persisted.
