1 files changed, 14 insertions, 0 deletions

diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 192f51a12cf1..35ddc3ed119d 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -905,6 +905,17 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
 }
 
 static void
+smb2_downgrade_oplock(struct TCP_Server_Info *server,
+                        struct cifsInodeInfo *cinode, bool set_level2)
+{
+        if (set_level2)
+                server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
+                                                0, NULL);
+        else
+                server->ops->set_oplock_level(cinode, 0, 0, NULL);
+}
+
+static void
 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
                       unsigned int epoch, bool *purge_cache)
 {
@@ -1110,6 +1121,7 @@ struct smb_version_operations smb20_operations = {
         .clear_stats = smb2_clear_stats,
         .print_stats = smb2_print_stats,
         .is_oplock_break = smb2_is_valid_oplock_break,
+        .downgrade_oplock = smb2_downgrade_oplock,
         .need_neg = smb2_need_neg,
         .negotiate = smb2_negotiate,
         .negotiate_wsize = smb2_negotiate_wsize,
@@ -1184,6 +1196,7 @@ struct smb_version_operations smb21_operations = {
         .clear_stats = smb2_clear_stats,
         .print_stats = smb2_print_stats,
         .is_oplock_break = smb2_is_valid_oplock_break,
+        .downgrade_oplock = smb2_downgrade_oplock,
         .need_neg = smb2_need_neg,
         .negotiate = smb2_negotiate,
         .negotiate_wsize = smb2_negotiate_wsize,
@@ -1259,6 +1272,7 @@ struct smb_version_operations smb30_operations = {
         .print_stats = smb2_print_stats,
         .dump_share_caps = smb2_dump_share_caps,
         .is_oplock_break = smb2_is_valid_oplock_break,
+        .downgrade_oplock = smb2_downgrade_oplock,
         .need_neg = smb2_need_neg,
         .negotiate = smb2_negotiate,
         .negotiate_wsize = smb2_negotiate_wsize,