Patch "SMB3: Don't ignore O_SYNC/O_DSYNC and O_DIRECT flags" has been added to the 4.9-stable tree

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

SMB3: Don't ignore O_SYNC/O_DSYNC and O_DIRECT flags

to the 4.9-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:
smb3-don-t-ignore-o_sync-o_dsync-and-o_direct-flags.patch
and it can be found in the queue-4.9 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: Fri, 22 Sep 2017 01:40:27 -0500
Subject: SMB3: Don't ignore O_SYNC/O_DSYNC and O_DIRECT flags

From: Steve French <[email protected]>

commit 1013e760d10e614dc10b5624ce9fc41563ba2e65 upstream.

---
 fs/cifs/file.c |    7 +++++++
 1 file changed, 7 insertions(+)

@@ -224,6 +224,13 @@ cifs_nt_open(char *full_path, struct ino
 	if (backup_cred(cifs_sb))
 		create_options |= CREATE_OPEN_BACKUP_INTENT;
 
+	/* O_SYNC also has bit for O_DSYNC so following check picks up either */
+	if (f_flags & O_SYNC)
+		create_options |= CREATE_WRITE_THROUGH;
+
+	if (f_flags & O_DIRECT)
+		create_options |= CREATE_NO_BUFFER;
+
 	oparms.tcon = tcon;
 	oparms.cifs_sb = cifs_sb;
 	oparms.desired_access = desired_access;

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

queue-4.9/cifs-release-cifs-root_cred-after-exit_cifs.patch queue-4.9/smb3-warn-user-if-trying-to-sign-connection-that-authenticated-as-guest.patch queue-4.9/smb3-don-t-ignore-o_sync-o_dsync-and-o_direct-flags.patch queue-4.9/fix-smb3.1.1-guest-authentication-to-samba.patch queue-4.9/cifs-release-auth_key.response-for-reconnect.patch queue-4.9/smb-validate-negotiate-to-protect-against-downgrade-even-if-signing-off.patch