Patch "Set unicode flag on cifs echo request to avoid Mac error" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

Set unicode flag on cifs echo request to avoid Mac error

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
set-unicode-flag-on-cifs-echo-request-to-avoid-mac-error.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Steve French <[email protected]>
Date: Tue, 2 May 2017 13:35:20 -0500
Subject: Set unicode flag on cifs echo request to avoid Mac error

From: Steve French <[email protected]>

commit 26c9cb668c7fbf9830516b75d8bee70b699ed449 upstream.

Mac requires the unicode flag to be set for cifs, even for the smb echo request (which doesn't have strings).

Without this Mac rejects the periodic echo requests (when mounting with cifs) that we use to check if server is down

---
 fs/cifs/cifssmb.c |    3 +++
 1 file changed, 3 insertions(+)

@@ -717,6 +717,9 @@ CIFSSMBEcho(struct TCP_Server_Info *serv
 	if (rc)
 		return rc;
 
+	if (server->capabilities & CAP_UNICODE)
+		smb->hdr.Flags2 |= SMBFLG2_UNICODE;
+
 	/* set up echo request */
 	smb->hdr.Tid = 0xffff;
 	smb->hdr.WordCount = 1;

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/cifs-fix-mapping-of-sfm_space-and-sfm_period.patch queue-4.4/cifs-add-misssing-sfm-mapping-for-doublequote.patch queue-4.4/cifs-fix-cifs_ioc_get_mnt_info-oops.patch queue-4.4/smb3-work-around-mount-failure-when-using-smb3-dialect-to-macs.patch queue-4.4/set-unicode-flag-on-cifs-echo-request-to-avoid-mac-error.patch