cifs: revalidate mapping when doing direct writes
Kernel bugzilla: 216301 When doing direct writes we need to also invalidate the mapping in case we have a cached copy of the affected page(s) in memory or else subsequent reads of the data might return the old/stale content before we wrote an update to the server. Cc: stable@vger.kernel.org Reviewed-by: NPaulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: NRonnie Sahlberg <lsahlber@redhat.com> Signed-off-by: NSteve French <stfrench@microsoft.com>
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