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Subject[PATCH 5.10 002/243] cifs: handle reconnect of tcon when there is no cached dfs referral
Date
From: Paulo Alcantara <pc@cjr.nz>

commit 507345b5ae6a57b7ecd7550ff39282ed20de7b8d upstream.

When there is no cached DFS referral of tcon->dfs_path, then reconnect
to same share.

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/cifs/connect.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -5352,7 +5352,8 @@ int cifs_tree_connect(const unsigned int
if (!tree)
return -ENOMEM;

- if (!tcon->dfs_path) {
+ /* If it is not dfs or there was no cached dfs referral, then reconnect to same share */
+ if (!tcon->dfs_path || dfs_cache_noreq_find(tcon->dfs_path + 1, &ref, &tl)) {
if (tcon->ipc) {
scnprintf(tree, MAX_TREE_SIZE, "\\\\%s\\IPC$", server->hostname);
rc = ops->tree_connect(xid, tcon->ses, tree, tcon, nlsc);
@@ -5362,9 +5363,6 @@ int cifs_tree_connect(const unsigned int
goto out;
}

- rc = dfs_cache_noreq_find(tcon->dfs_path + 1, &ref, &tl);
- if (rc)
- goto out;
isroot = ref.server_type == DFS_TYPE_ROOT;
free_dfs_info_param(&ref);


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