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    SubjectRe: [PATCH 05/10] ovl: make sure fsync is never called on the lower filesystem.
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    On Mon, 06 Sep 2010, NeilBrown wrote:
    > If we open a directory O_RDONLY, ->realfile could be on the lower
    > filesystem.
    > While fsync is not likely to be called on such a file, we should make
    > sure never to pass the fsync down as we are treating the lower
    > filesystem as read-only.

    Why not? fsync() works fine on an r/o filesystem. It doesn't do
    much, probably, but that's not a reason to add additional complexity.

    Thanks,
    Miklos


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