diff options
| author | Paulo Alcantara <pc@cjr.nz> | 2022-12-13 07:23:16 +0300 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2022-12-19 17:03:12 +0300 |
| commit | 6916881f443f67f6893b504fa2171468c8aed915 (patch) | |
| tree | 706aefb2bdbc045f97d071823853fc2b3240d916 /fs/cifs/dfs.c | |
| parent | cb3f6d8764529c33269c3478c17641cb097a615b (diff) | |
| download | linux-6916881f443f67f6893b504fa2171468c8aed915.tar.xz | |
cifs: fix refresh of cached referrals
We can't rely on cifs_tcon::ses to refresh cached referral as the
server target might not respond to referrals, e.g. share is not hosted
in a DFS root server. Consider the following
mount //dom/dfs/link -> /root1/dfs/link -> /fs0/share
where fs0 can't get a referral for "/root1/dfs/link".
To simplify and fix the access of dfs root sessions, store the dfs
root session pointer directly to new sessions so making it easier to
select the appropriate ipc connection and use it for failover or cache
refresh.
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/dfs.c')
| -rw-r--r-- | fs/cifs/dfs.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/cifs/dfs.c b/fs/cifs/dfs.c index 88a0cab335b4..fbc8e880a1fe 100644 --- a/fs/cifs/dfs.c +++ b/fs/cifs/dfs.c @@ -95,7 +95,13 @@ static int get_session(struct cifs_mount_ctx *mnt_ctx, const char *full_path) ctx->leaf_fullpath = (char *)full_path; rc = cifs_mount_get_session(mnt_ctx); ctx->leaf_fullpath = NULL; + if (!rc) { + struct cifs_ses *ses = mnt_ctx->ses; + mutex_lock(&ses->session_mutex); + ses->dfs_root_ses = mnt_ctx->root_ses; + mutex_unlock(&ses->session_mutex); + } return rc; } |