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It doesn't make sense to keep the very aged lock even with the LRUR policy. This patch decreased the default ns_max_age from 10 hours to 65 minutes and changed LRUR policy to cancel very aged locks. Signed-off-by: Niu Yawei <yawei.niu@intel.com> Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6529 Reviewed-on: http://review.whamcloud.com/14856 Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com> Reviewed-by: Andreas Dilger <andreas.dilger@intel.com> Reviewed-by: Oleg Drokin <oleg.drokin@intel.com> Signed-off-by: James Simmons <jsimmons@infradead.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>