Re: [RFC] relaxed barrier semantics

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On Thu, Jul 29, 2010 at 09:54:50AM -0700, Joel Becker wrote:
> handled-for-us behaviors of sync have changed.  If the VFS is already
> doing some work for us, maybe we don't need to do it.  But we have to be
> sure that these calls are always going through those paths.  We sync our
> files to disk when we drop cluster locks, regardless of whether there is
> a userspace fsync().

ocfs2_sync_file only gets called through the fsync inode operation, so
that doesn't happen here.  And if it did the filemap_fdatawrite would
not help at all, given that is only starts writeout, but never waits for
it to finish.

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