cifs: define inode-level cache object and register them

Define inode-level data storage objects (managed by cifsInodeInfo structs).
Each inode-level object is created in a super-block level object and is itself
a data storage object in to which pages from the inode are stored.

The inode object is keyed by UniqueId. The coherency data being used is
LastWriteTime, LastChangeTime and end of file reported by the server.

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 a3e403e7e163..9b7cf9aa3a00 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -390,6 +390,9 @@ struct cifsInodeInfo {
         bool invalid_mapping:1;         /* pagecache is invalid */
         u64  server_eof;                /* current file size on server */
         u64  uniqueid;                  /* server inode number */
+#ifdef CONFIG_CIFS_FSCACHE
+        struct fscache_cookie *fscache;
+#endif
         struct inode vfs_inode;
 };