On Wed 16-11-11 07:45:50, Christoph Hellwig wrote:
> On Wed, Nov 16, 2011 at 11:54:13AM +0100, Jan Kara wrote:
> > Yeah, only that nobody calls that fsync() automatically if the fd is
> > O_SYNC if I'm right. But maybe calling fdatasync() on the range which was
> > fallocated from sys_fallocate() if the fd is O_SYNC would do the trick for
> > most filesystems? That would match how we treat O_SYNC for other operations
> > as well. I'm just not sure whether XFS wouldn't take unnecessarily big hit
> > with this.
>
> This would work fine with XFS and be equivalent to what it does for
> O_DSYNC now. But I'd rather see every filesystem do the right thing
> and make sure the update actually is on disk when doing O_(D)SYNC
> operations.
OK, I don't really have a strong opinion here. Are you afraid that just
calling fsync() need not be enough to push all updates fallocate did to
disk?
Honza
--
Jan Kara <j...@suse.cz>
SUSE Labs, CR
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
