smb3: request handle caching when caching directories

This client was only requesting READ caching, not READ and HANDLE caching
in the LeaseState on the open requests we send for directories.  To
delay closing a handle (e.g. for caching directory contents) we should
be requesting HANDLE as well as READ (as we already do for deferred
close of files).   See MS-SMB2 3.3.1.4 e.g.

Cc: [email protected]
Signed-off-by: Steve French <[email protected]>

Author: smfrench

fs/smb/client/smb2ops.c

@@ -4080,7 +4080,7 @@ map_oplock_to_lease(u8 oplock)
 	if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
 		return SMB2_LEASE_WRITE_CACHING_LE | SMB2_LEASE_READ_CACHING_LE;
 	else if (oplock == SMB2_OPLOCK_LEVEL_II)
-		return SMB2_LEASE_READ_CACHING_LE;
+		return SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE;
 	else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
 		return SMB2_LEASE_HANDLE_CACHING_LE | SMB2_LEASE_READ_CACHING_LE |
 		       SMB2_LEASE_WRITE_CACHING_LE;