This is a note to let you know that I've just added the patch titled
cifs: do not reset chan_max if multichannel is not supported at mount
to the 6.6-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:
cifs-do-not-reset-chan_max-if-multichannel-is-not-supported-at-mount.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6e5e64c9477d58e73cb1a0e83eacad1f8df247cf Mon Sep 17 00:00:00 2001
From: Shyam Prasad N <sprasad@xxxxxxxxxxxxx>
Date: Mon, 30 Oct 2023 11:00:10 +0000
Subject: cifs: do not reset chan_max if multichannel is not supported at mount
From: Shyam Prasad N <sprasad@xxxxxxxxxxxxx>
commit 6e5e64c9477d58e73cb1a0e83eacad1f8df247cf upstream.
If the mount command has specified multichannel as a mount option,
but multichannel is found to be unsupported by the server at the time
of mount, we set chan_max to 1. Which means that the user needs to
remount the share if the server starts supporting multichannel.
This change removes this reset. What it means is that if the user
specified multichannel or max_channels during mount, and at this
time, multichannel is not supported, but the server starts supporting
it at a later point, the client will be capable of scaling out the
number of channels.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Shyam Prasad N <sprasad@xxxxxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/smb/client/sess.c | 1 -
1 file changed, 1 deletion(-)
--- a/fs/smb/client/sess.c
+++ b/fs/smb/client/sess.c
@@ -186,7 +186,6 @@ int cifs_try_adding_channels(struct cifs
}
if (!(server->capabilities & SMB2_GLOBAL_CAP_MULTI_CHANNEL)) {
- ses->chan_max = 1;
spin_unlock(&ses->chan_lock);
cifs_server_dbg(VFS, "no multichannel support\n");
return 0;
Patches currently in stable-queue which might be from sprasad@xxxxxxxxxxxxx are
queue-6.6/cifs-reconnect-helper-should-set-reconnect-for-the-right-channel.patch
queue-6.6/cifs-do-not-reset-chan_max-if-multichannel-is-not-supported-at-mount.patch
queue-6.6/smb3-allow-dumping-session-and-tcon-id-to-improve-stats-analysis-and-debugging.patch
queue-6.6/cifs-force-interface-update-before-a-fresh-session-setup.patch
queue-6.6/cifs-do-not-pass-cifs_sb-when-trying-to-add-channels.patch
