Re: [PATCH v3] introduce sys_syncfs to sync a single file system

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On Monday 14 March 2011 22:11:19 Ted Ts'o wrote:
> It wouldn't hurt to have a "flags" field which we could expand later
> --- but that can lead to portability headaches for userspace programs
> that don't know whether a particular kernel is going to support a
> particular flag or not.  So it's certainly not a panacea.

I think adding an unused flags argument can't hurt.

We could be fancy and ignore half the bits but bail out on the other
half with -EINVAL. That would make it possible to add both compatible
(default being full sync on old kernels) and incompatible (getting
rejected on old kernels) flags.

	Arnd
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