Revert "fsnotify: store struct file not struct path"

This reverts commit 3bcf3860a4ff9bbc522820b4b765e65e4deceb3e (and the
accompanying commit c1e5c954020e "vfs/fsnotify: fsnotify_close can delay
the final work in fput" that was a horribly ugly hack to make it work at
all).

The 'struct file' approach not only causes that disgusting hack, it
somehow breaks pulseaudio, probably due to some other subtlety with
f_count handling.

Fix up various conflicts due to later fsnotify work.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/audit_watch.c b/kernel/audit_watch.c
index 6bf2306..f0c9b2e 100644
--- a/kernel/audit_watch.c
+++ b/kernel/audit_watch.c
@@ -526,8 +526,8 @@
 	BUG_ON(group != audit_watch_group);
 
 	switch (event->data_type) {
-	case (FSNOTIFY_EVENT_FILE):
-		inode = event->file->f_path.dentry->d_inode;
+	case (FSNOTIFY_EVENT_PATH):
+		inode = event->path.dentry->d_inode;
 		break;
 	case (FSNOTIFY_EVENT_INODE):
 		inode = event->inode;