1 files changed, 12 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 479eeaf44024..1a036cd972fb 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1898,6 +1898,18 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                         will be sent.
                         The default is to send the implementation identification
                         information.
+        
+        nfs.recover_lost_locks =
+                        [NFSv4] Attempt to recover locks that were lost due
+                        to a lease timeout on the server. Please note that
+                        doing this risks data corruption, since there are
+                        no guarantees that the file will remain unchanged
+                        after the locks are lost.
+                        If you want to enable the kernel legacy behaviour of
+                        attempting to recover these locks, then set this
+                        parameter to '1'.
+                        The default parameter value of '0' causes the kernel
+                        not to attempt recovery of lost locks.
 
         nfsd.nfs4_disable_idmapping=
                         [NFSv4] When set to the default of '1', the NFSv4