diff options
| author | Paulo Alcantara <pc@cjr.nz> | 2022-12-13 01:23:16 -0300 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2022-12-19 08:03:12 -0600 |
| commit | 6916881f443f67f6893b504fa2171468c8aed915 (patch) | |
| tree | 706aefb2bdbc045f97d071823853fc2b3240d916 /fs/cifs/cifsglob.h | |
| parent | cb3f6d8764529c33269c3478c17641cb097a615b (diff) | |
| download | linux-6916881f443f67f6893b504fa2171468c8aed915.tar.gz | |
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/cifsglob.h')
| -rw-r--r-- | fs/cifs/cifsglob.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 2e2976f1874f..cfdd5bf701a1 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -107,6 +107,8 @@ #define CIFS_MAX_WORKSTATION_LEN (__NEW_UTS_LEN + 1) /* reasonable max for client */ +#define CIFS_DFS_ROOT_SES(ses) ((ses)->dfs_root_ses ?: (ses)) + /* * CIFS vfs client Status information (based on what we know.) */ @@ -1099,6 +1101,7 @@ struct cifs_ses { */ unsigned long chans_need_reconnect; /* ========= end: protected by chan_lock ======== */ + struct cifs_ses *dfs_root_ses; }; static inline bool |