cifs: define server-level cache index objects and register them

Define server-level cache index objects (as managed by TCP_ServerInfo structs)
and register then with FS-Cache. Each server object is created in the CIFS
top-level index object and is itself an index into which superblock-level
objects are inserted.

The server objects are now keyed by {IPaddress,family,port} tuple.

Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 6113427651c4..06b48998db94 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -192,6 +192,9 @@ struct TCP_Server_Info {
         bool    sec_mskerberos;         /* supports legacy MS Kerberos */
         bool    sec_kerberosu2u;        /* supports U2U Kerberos */
         bool    sec_ntlmssp;            /* supports NTLMSSP */
+#ifdef CONFIG_CIFS_FSCACHE
+        struct fscache_cookie   *fscache; /* client index cache cookie */
+#endif
 };
 
 /*