Starting with kernel 4.17 XFS will support the lazytime mount option.
That will be beneficial for Scylla as updating times synchronously is
one of our current sources of stalls.
Fortunately, older kernels are able to parse the option and just ignore
it. We verified that to be the case in a 4.15 kernel on ubuntu.
Therefore, just add the option unconditionally.
Signed-off-by: Glauber Costa <glauber@scylladb.com>
Message-Id: <20180920170017.13215-1-glauber@scylladb.com>
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