This disables tcon re-use for DFS shares.
tcon->dfs_path stores the path that the tcon should connect to when
doing failing over.
If that tcon is used multiple times e.g. 2 mounts using it with
different prefixpath, each will need a different dfs_path but there is
only one tcon. The other solution would be to split the tcon in 2
tcons during failover but that is much harder.
Signed-off-by: Paulo Alcantara (SUSE) <pc@xxxxxx>
Reviewed-by: Aurelien Aptel <aaptel@xxxxxxxx>
---
fs/cifs/connect.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 95b3ab0ca8c0..ac6d286fe79f 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -3373,7 +3373,7 @@ cifs_find_tcon(struct cifs_ses *ses, struct smb_vol *volume_info)
spin_lock(&cifs_tcp_ses_lock);
list_for_each(tmp, &ses->tcon_list) {
tcon = list_entry(tmp, struct cifs_tcon, tcon_list);
- if (!match_tcon(tcon, volume_info))
+ if (!match_tcon(tcon, volume_info) || tcon->dfs_path)
continue;
++tcon->tc_count;
spin_unlock(&cifs_tcp_ses_lock);
--
2.26.0
