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


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