Commit 0826b134 authored by Paulo Alcantara's avatar Paulo Alcantara Committed by Steve French
Browse files

smb: client: fix DFS failover in multiuser mounts 



For sessions and tcons created on behalf of new users accessing a
multiuser mount, matching their sessions in tcon_super_cb() with
master tcon will always lead to false as every new user will have its
own session and tcon.

All multiuser sessions, however, will inherit ->dfs_root_ses from
master tcon, so match it instead.

Signed-off-by: default avatarPaulo Alcantara (Red Hat) <pc@manguebit.com>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent 85633c00

fs/smb/client/misc.c

+2 −1
Original line number Diff line number Diff line
@@ -1111,7 +1111,8 @@ static void tcon_super_cb(struct super_block *sb, void *arg) 
	t2 = cifs_sb_master_tcon(cifs_sb);



	spin_lock(&t2->tc_lock);

	if (t1->ses == t2->ses &&

	if ((t1->ses == t2->ses ||

	     t1->ses->dfs_root_ses == t2->ses->dfs_root_ses) &&

	    t1->ses->server == t2->ses->server &&

	    t2->origin_fullpath &&

	    dfs_src_pathname_equal(t2->origin_fullpath, t1->origin_fullpath))