fsnotify: add a way to stop queueing events on group shutdown

[cascardo/linux.git] / include / linux / fsnotify_backend.h

diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
index 58205f3..40a9e99 100644 (file)
--- a/include/linux/fsnotify_backend.h
+++ b/include/linux/fsnotify_backend.h
@@ -148,6 +148,7 @@ struct fsnotify_group {
        #define FS_PRIO_1       1 /* fanotify content based access control */
        #define FS_PRIO_2       2 /* fanotify pre-content access */
        unsigned int priority;
+       bool shutdown;          /* group is being shut down, don't queue more events */
 
        /* stores all fastpath marks assoc with this group so they can be cleaned on unregister */
        struct mutex mark_mutex;        /* protect marks_list */
@@ -292,6 +293,8 @@ extern struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *op
 extern void fsnotify_get_group(struct fsnotify_group *group);
 /* drop reference on a group from fsnotify_alloc_group */
 extern void fsnotify_put_group(struct fsnotify_group *group);
+/* group destruction begins, stop queuing new events */
+extern void fsnotify_group_stop_queueing(struct fsnotify_group *group);
 /* destroy group */
 extern void fsnotify_destroy_group(struct fsnotify_group *group);
 /* fasync handler function */