FS-Cache: Convert the object event ID #defines into an enum

Convert the fscache_object event IDs from #defines into an enum.  Also add an
extra label to the enum to carry the event count and redefine the event mask
in terms of that.

Signed-off-by: David Howells <dhowells@redhat.com>

diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h
index 1e454ad7a832192eef7b96c5ef51ec756a14c3b4..73e68c8d5df473d1b7d98b5e168bf79085bd0e2a 100644 (file)
--- a/include/linux/fscache-cache.h
+++ b/include/linux/fscache-cache.h
@@ -337,6 +337,23 @@ struct fscache_cookie {
 
 extern struct fscache_cookie fscache_fsdef_index;
 
+/*
+ * Event list for fscache_object::{event_mask,events}
+ */
+enum {
+       FSCACHE_OBJECT_EV_REQUEUE,      /* T if object should be requeued */
+       FSCACHE_OBJECT_EV_UPDATE,       /* T if object should be updated */
+       FSCACHE_OBJECT_EV_INVALIDATE,   /* T if cache requested object invalidation */
+       FSCACHE_OBJECT_EV_CLEARED,      /* T if accessors all gone */
+       FSCACHE_OBJECT_EV_ERROR,        /* T if fatal error occurred during processing */
+       FSCACHE_OBJECT_EV_RELEASE,      /* T if netfs requested object release */
+       FSCACHE_OBJECT_EV_RETIRE,       /* T if netfs requested object retirement */
+       FSCACHE_OBJECT_EV_WITHDRAW,     /* T if cache requested object withdrawal */
+       NR_FSCACHE_OBJECT_EVENTS
+};
+
+#define FSCACHE_OBJECT_EVENTS_MASK ((1UL << NR_FSCACHE_OBJECT_EVENTS) - 1)
+
 /*
  * on-disk cache file or index handle
  */
@@ -376,15 +393,6 @@ struct fscache_object {
        unsigned long           event_mask;     /* events this object is interested in */
        unsigned long           events;         /* events to be processed by this object
                                                 * (order is important - using fls) */
-#define FSCACHE_OBJECT_EV_REQUEUE      0       /* T if object should be requeued */
-#define FSCACHE_OBJECT_EV_UPDATE       1       /* T if object should be updated */
-#define FSCACHE_OBJECT_EV_CLEARED      2       /* T if accessors all gone */
-#define FSCACHE_OBJECT_EV_ERROR                3       /* T if fatal error occurred during processing */
-#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_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 */