Re: [PATCH 11/13] dax, iomap: Add support for synchronous faults

On Thu 24-08-17 05:27:20, Christoph Hellwig wrote:

Just curious:  how does IOMAP_F_NEEDDSYNC practically differ
from IOMAP_F_NEW?

In a subtle but important way ;). The main difference is that if the extent
has been already allocated by previous write, but the changing transaction
is not yet committed, we will return IOMAP_F_NEEDDSYNC but not IOMAP_F_NEW.

								Honza
-- 
Jan Kara [off-list ref]
SUSE Labs, CR