1 files changed, 7 insertions, 1 deletions

diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h
index f5facd1d333f..1e454ad7a832 100644
--- a/include/linux/fscache-cache.h
+++ b/include/linux/fscache-cache.h
@@ -254,6 +254,9 @@ struct fscache_cache_ops {
         /* store the updated auxiliary data on an object */
         void (*update_object)(struct fscache_object *object);
 
+        /* Invalidate an object */
+        void (*invalidate_object)(struct fscache_operation *op);
+
         /* discard the resources pinned by an object and effect retirement if
          * necessary */
         void (*drop_object)(struct fscache_object *object);
@@ -329,6 +332,7 @@ struct fscache_cookie {
 #define FSCACHE_COOKIE_FILLING          4       /* T if filling object incrementally */
 #define FSCACHE_COOKIE_UNAVAILABLE      5       /* T if cookie is unavailable (error, etc) */
 #define FSCACHE_COOKIE_WAITING_ON_READS 6       /* T if cookie is waiting on reads */
+#define FSCACHE_COOKIE_INVALIDATING     7       /* T if cookie is being invalidated */
 };
 
 extern struct fscache_cookie fscache_fsdef_index;
@@ -345,6 +349,7 @@ struct fscache_object {
                 /* active states */
                 FSCACHE_OBJECT_AVAILABLE,       /* cleaning up object after creation */
                 FSCACHE_OBJECT_ACTIVE,          /* object is usable */
+                FSCACHE_OBJECT_INVALIDATING,    /* object is invalidating */
                 FSCACHE_OBJECT_UPDATING,        /* object is updating */
 
                 /* terminal states */
@@ -378,7 +383,8 @@ struct fscache_object {
 #define FSCACHE_OBJECT_EV_RELEASE       4       /* T if netfs requested object release */
 #define FSCACHE_OBJECT_EV_RETIRE        5       /* T if netfs requested object retirement */
 #define FSCACHE_OBJECT_EV_WITHDRAW      6       /* T if cache requested object withdrawal */
-#define FSCACHE_OBJECT_EVENTS_MASK      0x7f    /* mask of all events*/
+#define FSCACHE_OBJECT_EV_INVALIDATE    7       /* T if cache requested object invalidation */
+#define FSCACHE_OBJECT_EVENTS_MASK      0xff    /* mask of all events*/
 
         unsigned long           flags;
 #define FSCACHE_OBJECT_LOCK             0       /* T if object is busy being processed */