Patch to add support for advertising FULLSYNC to Mac OSX Clients

[Christoph Hellwig]

On Sun, Feb 19, 2017 at 08:44:47PM +0200, Alexander Bokovoy wrote:
> On su, 19 helmi 2017, Christoph Hellwig wrote:
> > Coming in late here, but I would suggest that the Samba team
> > reconsiders implementing the flush commands properly, as in not
> > being a no-op.  Except for the Apple world with it's odd FULLSYNC
> > fcntl fsync/fdatasync is _the_ primitive to guarantee data integrity,
> > and a major file sever that simply ignores it is a major disaster for
> > the full storage stack.
> Samba already has vfs_commit module which implements fsync/fdatasync
> use. It can be stacked with other modules to achieve what you just
> described.

I'm worried about doing the right thing out of the box and by default.