On Mon, Jan 06, 2025 at 09:31:33AM -0800, Darrick J. Wong wrote: > I think we should wire it up as a new FALLOC_FL_WRITE_ZEROES mode, > document very vigorously that it exists to facilitate pure overwrites > (specifically that it returns EOPNOTSUPP for always-cow files), and not > add more ioctls. That goes into a similar direction to what I'd prefer. > (That said, doesn't BLKZEROOUT already do this for bdevs?) Yes. But the same is true for the other fallocate modes on block devices.
