[GFS2] Split gfs2_writepage into three cases

[pandora-kernel.git] / fs / inotify.c

diff --git a/fs/inotify.c b/fs/inotify.c
index 7457501..2c5b921 100644 (file)
--- a/fs/inotify.c
+++ b/fs/inotify.c
@@ -666,6 +666,49 @@ out:
 }
 EXPORT_SYMBOL_GPL(inotify_add_watch);
 
+/**
+ * inotify_clone_watch - put the watch next to existing one
+ * @old: already installed watch
+ * @new: new watch
+ *
+ * Caller must hold the inotify_mutex of inode we are dealing with;
+ * it is expected to remove the old watch before unlocking the inode.
+ */
+s32 inotify_clone_watch(struct inotify_watch *old, struct inotify_watch *new)
+{
+       struct inotify_handle *ih = old->ih;
+       int ret = 0;
+
+       new->mask = old->mask;
+       new->ih = ih;
+
+       mutex_lock(&ih->mutex);
+
+       /* Initialize a new watch */
+       ret = inotify_handle_get_wd(ih, new);
+       if (unlikely(ret))
+               goto out;
+       ret = new->wd;
+
+       get_inotify_handle(ih);
+
+       new->inode = igrab(old->inode);
+
+       list_add(&new->h_list, &ih->watches);
+       list_add(&new->i_list, &old->inode->inotify_watches);
+out:
+       mutex_unlock(&ih->mutex);
+       return ret;
+}
+
+void inotify_evict_watch(struct inotify_watch *watch)
+{
+       get_inotify_watch(watch);
+       mutex_lock(&watch->ih->mutex);
+       inotify_remove_watch_locked(watch->ih, watch);
+       mutex_unlock(&watch->ih->mutex);
+}
+
 /**
  * inotify_rm_wd - remove a watch from an inotify instance
  * @ih: inotify handle