CIFS: Add SMB2 support for cifs_iovec_read

Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index fcf81c05635f..93dd582bb8d1 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -857,12 +857,37 @@ struct cifsFileInfo {
 
 struct cifs_io_parms {
         __u16 netfid;
+#ifdef CONFIG_CIFS_SMB2
+        __u64 persistent_fid;   /* persist file id for smb2 */
+        __u64 volatile_fid;     /* volatile file id for smb2 */
+#endif
         __u32 pid;
         __u64 offset;
         unsigned int length;
         struct cifs_tcon *tcon;
 };
 
+struct cifs_readdata;
+
+/* asynchronous read support */
+struct cifs_readdata {
+        struct kref                     refcount;
+        struct list_head                list;
+        struct completion               done;
+        struct cifsFileInfo             *cfile;
+        struct address_space            *mapping;
+        __u64                           offset;
+        unsigned int                    bytes;
+        pid_t                           pid;
+        int                             result;
+        struct list_head                pages;
+        struct work_struct              work;
+        int (*marshal_iov) (struct cifs_readdata *rdata,
+                            unsigned int remaining);
+        unsigned int                    nr_iov;
+        struct kvec                     iov[1];
+};
+
 /*
  * Take a reference on the file private data. Must be called with
  * cifs_file_list_lock held.