1 files changed, 8 insertions, 0 deletions

diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index c0f3718b77a8..30f6e9251a4a 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -228,6 +228,8 @@ struct smb_version_operations {
         /* verify the message */
         int (*check_message)(char *, unsigned int);
         bool (*is_oplock_break)(char *, struct TCP_Server_Info *);
+        void (*downgrade_oplock)(struct TCP_Server_Info *,
+                                        struct cifsInodeInfo *, bool);
         /* process transaction2 response */
         bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *,
                              char *, int);
@@ -1113,6 +1115,12 @@ struct cifsInodeInfo {
         unsigned int epoch;             /* used to track lease state changes */
         bool delete_pending;            /* DELETE_ON_CLOSE is set */
         bool invalid_mapping;           /* pagecache is invalid */
+        unsigned long flags;
+#define CIFS_INODE_PENDING_OPLOCK_BREAK   (0) /* oplock break in progress */
+#define CIFS_INODE_PENDING_WRITERS        (1) /* Writes in progress */
+#define CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2 (2) /* Downgrade oplock to L2 */
+        spinlock_t writers_lock;
+        unsigned int writers;           /* Number of writers on this inode */
         unsigned long time;             /* jiffies of last update of inode */
         u64  server_eof;                /* current file size on server -- protected by i_lock */
         u64  uniqueid;                  /* server inode number */