VFS: kernel/: d_inode() annotations

relayfs and tracefs are dealing with inodes of their own;
those two act as filesystem drivers

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

kernel/relay.c

@@ -407,7 +407,7 @@ static inline void relay_set_buf_dentry(struct rchan_buf *buf,
 					struct dentry *dentry)
 {
 	buf->dentry = dentry;
-	buf->dentry->d_inode->i_size = buf->early_bytes;
+	d_inode(buf->dentry)->i_size = buf->early_bytes;
 }
 
 static struct dentry *relay_create_buf_file(struct rchan *chan,
@@ -733,7 +733,7 @@ size_t relay_switch_subbuf(struct rchan_buf *buf, size_t length)
 		buf->padding[old_subbuf] = buf->prev_padding;
 		buf->subbufs_produced++;
 		if (buf->dentry)
-			buf->dentry->d_inode->i_size +=
+			d_inode(buf->dentry)->i_size +=
 				buf->chan->subbuf_size -
 				buf->padding[old_subbuf];
 		else

kernel/trace/trace.c

@@ -5846,7 +5846,7 @@ trace_create_cpu_file(const char *name, umode_t mode, struct dentry *parent,
 	struct dentry *ret = trace_create_file(name, mode, parent, data, fops);
 
 	if (ret) /* See tracing_get_cpu() */
-		ret->d_inode->i_cdev = (void *)(cpu + 1);
+		d_inode(ret)->i_cdev = (void *)(cpu + 1);
 	return ret;
 }
 
@@ -6420,7 +6420,7 @@ static int instance_rmdir(struct inode *inode, struct dentry *dentry)
 		return -ENOENT;
 
 	/* The caller did a dget() on dentry */
-	mutex_unlock(&dentry->d_inode->i_mutex);
+	mutex_unlock(&d_inode(dentry)->i_mutex);
 
 	/*
 	 * The inode mutex is locked, but debugfs_create_dir() will also
@@ -6435,7 +6435,7 @@ static int instance_rmdir(struct inode *inode, struct dentry *dentry)
 	ret = instance_delete(dentry->d_iname);
 
 	mutex_lock_nested(&inode->i_mutex, I_MUTEX_PARENT);
-	mutex_lock(&dentry->d_inode->i_mutex);
+	mutex_lock(&d_inode(dentry)->i_mutex);
 
 	return ret;
 }
@@ -6453,7 +6453,7 @@ static __init void create_trace_instances(struct dentry *d_tracer)
 		return;
 
 	/* Hijack the dir inode operations, to allow mkdir */
-	trace_instance_dir->d_inode->i_op = &instance_dir_inode_operations;
+	d_inode(trace_instance_dir)->i_op = &instance_dir_inode_operations;
 }
 
 static void

kernel/trace/trace_events.c

@@ -494,8 +494,8 @@ static void remove_event_file_dir(struct ftrace_event_file *file)
 	if (dir) {
 		spin_lock(&dir->d_lock);	/* probably unneeded */
 		list_for_each_entry(child, &dir->d_subdirs, d_child) {
-			if (child->d_inode)	/* probably unneeded */
-				child->d_inode->i_private = NULL;
+			if (d_really_is_positive(child))	/* probably unneeded */
+				d_inode(child)->i_private = NULL;
 		}
 		spin_unlock(&dir->d_lock);
 

kernel/trace/trace_uprobe.c

@@ -443,7 +443,7 @@ static int create_trace_uprobe(int argc, char **argv)
 	if (ret)
 		goto fail_address_parse;
 
-	inode = igrab(path.dentry->d_inode);
+	inode = igrab(d_inode(path.dentry));
 	path_put(&path);
 
 	if (!inode || !S_ISREG(inode->i_mode)) {