Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull fourth vfs update from Al Viro:
 "d_inode() annotations from David Howells (sat in for-next since before
  the beginning of merge window) + four assorted fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  RCU pathwalk breakage when running into a symlink overmounting something
  fix I_DIO_WAKEUP definition
  direct-io: only inc/dec inode->i_dio_count for file systems
  fs/9p: fix readdir()
  VFS: assorted d_backing_inode() annotations
  VFS: fs/inode.c helpers: d_inode() annotations
  VFS: fs/cachefiles: d_backing_inode() annotations
  VFS: fs library helpers: d_inode() annotations
  VFS: assorted weird filesystems: d_inode() annotations
  VFS: normal filesystems (and lustre): d_inode() annotations
  VFS: security/: d_inode() annotations
  VFS: security/: d_backing_inode() annotations
  VFS: net/: d_inode() annotations
  VFS: net/unix: d_backing_inode() annotations
  VFS: kernel/: d_inode() annotations
  VFS: audit: d_backing_inode() annotations
  VFS: Fix up some ->d_inode accesses in the chelsio driver
  VFS: Cachefiles should perform fs modifications on the top layer only
  VFS: AF_UNIX sockets should call mknod on the top layer only

3 files changed, 45 insertions, 45 deletions

diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
index acb3d63bc9dc..c81ce7f200a6 100644
--- a/fs/configfs/dir.c
+++ b/fs/configfs/dir.c
@@ -289,7 +289,7 @@ static int configfs_create_dir(struct config_item *item, struct dentry *dentry)
 	configfs_set_dir_dirent_depth(p->d_fsdata, dentry->d_fsdata);
 	error = configfs_create(dentry, mode, init_dir);
 	if (!error) {
-		inc_nlink(p->d_inode);
+		inc_nlink(d_inode(p));
 		item->ci_dentry = dentry;
 	} else {
 		struct configfs_dirent *sd = dentry->d_fsdata;
@@ -375,8 +375,8 @@ static void remove_dir(struct dentry * d)
 	list_del_init(&sd->s_sibling);
 	spin_unlock(&configfs_dirent_lock);
 	configfs_put(sd);
-	if (d->d_inode)
-		simple_rmdir(parent->d_inode,d);
+	if (d_really_is_positive(d))
+		simple_rmdir(d_inode(parent),d);
 
 	pr_debug(" o %pd removing done (%d)\n", d, d_count(d));
 
@@ -513,7 +513,7 @@ static int configfs_detach_prep(struct dentry *dentry, struct mutex **wait_mutex
 			/* Abort if racing with mkdir() */
 			if (sd->s_type & CONFIGFS_USET_IN_MKDIR) {
 				if (wait_mutex)
-					*wait_mutex = &sd->s_dentry->d_inode->i_mutex;
+					*wait_mutex = &d_inode(sd->s_dentry)->i_mutex;
 				return -EAGAIN;
 			}
 
@@ -624,13 +624,13 @@ static void detach_groups(struct config_group *group)
 
 		child = sd->s_dentry;
 
-		mutex_lock(&child->d_inode->i_mutex);
+		mutex_lock(&d_inode(child)->i_mutex);
 
 		configfs_detach_group(sd->s_element);
-		child->d_inode->i_flags |= S_DEAD;
+		d_inode(child)->i_flags |= S_DEAD;
 		dont_mount(child);
 
-		mutex_unlock(&child->d_inode->i_mutex);
+		mutex_unlock(&d_inode(child)->i_mutex);
 
 		d_delete(child);
 		dput(child);
@@ -672,7 +672,7 @@ static int create_default_group(struct config_group *parent_group,
 			sd = child->d_fsdata;
 			sd->s_type |= CONFIGFS_USET_DEFAULT;
 		} else {
-			BUG_ON(child->d_inode);
+			BUG_ON(d_inode(child));
 			d_drop(child);
 			dput(child);
 		}
@@ -818,11 +818,11 @@ static int configfs_attach_item(struct config_item *parent_item,
 			 * the VFS may already have hit and used them. Thus,
 			 * we must lock them as rmdir() would.
 			 */
-			mutex_lock(&dentry->d_inode->i_mutex);
+			mutex_lock(&d_inode(dentry)->i_mutex);
 			configfs_remove_dir(item);
-			dentry->d_inode->i_flags |= S_DEAD;
+			d_inode(dentry)->i_flags |= S_DEAD;
 			dont_mount(dentry);
-			mutex_unlock(&dentry->d_inode->i_mutex);
+			mutex_unlock(&d_inode(dentry)->i_mutex);
 			d_delete(dentry);
 		}
 	}
@@ -858,16 +858,16 @@ static int configfs_attach_group(struct config_item *parent_item,
 		 * We must also lock the inode to remove it safely in case of
 		 * error, as rmdir() would.
 		 */
-		mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD);
+		mutex_lock_nested(&d_inode(dentry)->i_mutex, I_MUTEX_CHILD);
 		configfs_adjust_dir_dirent_depth_before_populate(sd);
 		ret = populate_groups(to_config_group(item));
 		if (ret) {
 			configfs_detach_item(item);
-			dentry->d_inode->i_flags |= S_DEAD;
+			d_inode(dentry)->i_flags |= S_DEAD;
 			dont_mount(dentry);
 		}
 		configfs_adjust_dir_dirent_depth_after_populate(sd);
-		mutex_unlock(&dentry->d_inode->i_mutex);
+		mutex_unlock(&d_inode(dentry)->i_mutex);
 		if (ret)
 			d_delete(dentry);
 	}
@@ -1075,7 +1075,7 @@ int configfs_depend_item(struct configfs_subsystem *subsys,
 	 * subsystem is really registered, and so we need to lock out
 	 * configfs_[un]register_subsystem().
 	 */
-	mutex_lock(&root->d_inode->i_mutex);
+	mutex_lock(&d_inode(root)->i_mutex);
 
 	root_sd = root->d_fsdata;
 
@@ -1111,7 +1111,7 @@ int configfs_depend_item(struct configfs_subsystem *subsys,
 out_unlock_dirent_lock:
 	spin_unlock(&configfs_dirent_lock);
 out_unlock_fs:
-	mutex_unlock(&root->d_inode->i_mutex);
+	mutex_unlock(&d_inode(root)->i_mutex);
 
 	/*
 	 * If we succeeded, the fs is pinned via other methods.  If not,
@@ -1453,11 +1453,11 @@ int configfs_rename_dir(struct config_item * item, const char *new_name)
 	down_write(&configfs_rename_sem);
 	parent = item->parent->dentry;
 
-	mutex_lock(&parent->d_inode->i_mutex);
+	mutex_lock(&d_inode(parent)->i_mutex);
 
 	new_dentry = lookup_one_len(new_name, parent, strlen(new_name));
 	if (!IS_ERR(new_dentry)) {
-		if (!new_dentry->d_inode) {
+		if (d_really_is_negative(new_dentry)) {
 			error = config_item_set_name(item, "%s", new_name);
 			if (!error) {
 				d_add(new_dentry, NULL);
@@ -1469,7 +1469,7 @@ int configfs_rename_dir(struct config_item * item, const char *new_name)
 			error = -EEXIST;
 		dput(new_dentry);
 	}
-	mutex_unlock(&parent->d_inode->i_mutex);
+	mutex_unlock(&d_inode(parent)->i_mutex);
 	up_write(&configfs_rename_sem);
 
 	return error;
@@ -1482,7 +1482,7 @@ static int configfs_dir_open(struct inode *inode, struct file *file)
 	struct configfs_dirent * parent_sd = dentry->d_fsdata;
 	int err;
 
-	mutex_lock(&dentry->d_inode->i_mutex);
+	mutex_lock(&d_inode(dentry)->i_mutex);
 	/*
 	 * Fake invisibility if dir belongs to a group/default groups hierarchy
 	 * being attached
@@ -1495,7 +1495,7 @@ static int configfs_dir_open(struct inode *inode, struct file *file)
 		else
 			err = 0;
 	}
-	mutex_unlock(&dentry->d_inode->i_mutex);
+	mutex_unlock(&d_inode(dentry)->i_mutex);
 
 	return err;
 }
@@ -1505,11 +1505,11 @@ static int configfs_dir_close(struct inode *inode, struct file *file)
 	struct dentry * dentry = file->f_path.dentry;
 	struct configfs_dirent * cursor = file->private_data;
 
-	mutex_lock(&dentry->d_inode->i_mutex);
+	mutex_lock(&d_inode(dentry)->i_mutex);
 	spin_lock(&configfs_dirent_lock);
 	list_del_init(&cursor->s_sibling);
 	spin_unlock(&configfs_dirent_lock);
-	mutex_unlock(&dentry->d_inode->i_mutex);
+	mutex_unlock(&d_inode(dentry)->i_mutex);
 
 	release_configfs_dirent(cursor);
 
@@ -1567,7 +1567,7 @@ static int configfs_readdir(struct file *file, struct dir_context *ctx)
 		spin_lock(&configfs_dirent_lock);
 		dentry = next->s_dentry;
 		if (dentry)
-			inode = dentry->d_inode;
+			inode = d_inode(dentry);
 		if (inode)
 			ino = inode->i_ino;
 		spin_unlock(&configfs_dirent_lock);
@@ -1590,7 +1590,7 @@ static loff_t configfs_dir_lseek(struct file *file, loff_t offset, int whence)
 {
 	struct dentry * dentry = file->f_path.dentry;
 
-	mutex_lock(&dentry->d_inode->i_mutex);
+	mutex_lock(&d_inode(dentry)->i_mutex);
 	switch (whence) {
 		case 1:
 			offset += file->f_pos;
@@ -1598,7 +1598,7 @@ static loff_t configfs_dir_lseek(struct file *file, loff_t offset, int whence)
 			if (offset >= 0)
 				break;
 		default:
-			mutex_unlock(&dentry->d_inode->i_mutex);
+			mutex_unlock(&d_inode(dentry)->i_mutex);
 			return -EINVAL;
 	}
 	if (offset != file->f_pos) {
@@ -1624,7 +1624,7 @@ static loff_t configfs_dir_lseek(struct file *file, loff_t offset, int whence)
 			spin_unlock(&configfs_dirent_lock);
 		}
 	}
-	mutex_unlock(&dentry->d_inode->i_mutex);
+	mutex_unlock(&d_inode(dentry)->i_mutex);
 	return offset;
 }
 
@@ -1654,7 +1654,7 @@ int configfs_register_subsystem(struct configfs_subsystem *subsys)
 	sd = root->d_fsdata;
 	link_group(to_config_group(sd->s_element), group);
 
-	mutex_lock_nested(&root->d_inode->i_mutex, I_MUTEX_PARENT);
+	mutex_lock_nested(&d_inode(root)->i_mutex, I_MUTEX_PARENT);
 
 	err = -ENOMEM;
 	dentry = d_alloc_name(root, group->cg_item.ci_name);
@@ -1664,7 +1664,7 @@ int configfs_register_subsystem(struct configfs_subsystem *subsys)
 		err = configfs_attach_group(sd->s_element, &group->cg_item,
 					    dentry);
 		if (err) {
-			BUG_ON(dentry->d_inode);
+			BUG_ON(d_inode(dentry));
 			d_drop(dentry);
 			dput(dentry);
 		} else {
@@ -1674,7 +1674,7 @@ int configfs_register_subsystem(struct configfs_subsystem *subsys)
 		}
 	}
 
-	mutex_unlock(&root->d_inode->i_mutex);
+	mutex_unlock(&d_inode(root)->i_mutex);
 
 	if (err) {
 		unlink_group(group);
@@ -1695,9 +1695,9 @@ void configfs_unregister_subsystem(struct configfs_subsystem *subsys)
 		return;
 	}
 
-	mutex_lock_nested(&root->d_inode->i_mutex,
+	mutex_lock_nested(&d_inode(root)->i_mutex,
 			  I_MUTEX_PARENT);
-	mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD);
+	mutex_lock_nested(&d_inode(dentry)->i_mutex, I_MUTEX_CHILD);
 	mutex_lock(&configfs_symlink_mutex);
 	spin_lock(&configfs_dirent_lock);
 	if (configfs_detach_prep(dentry, NULL)) {
@@ -1706,13 +1706,13 @@ void configfs_unregister_subsystem(struct configfs_subsystem *subsys)
 	spin_unlock(&configfs_dirent_lock);
 	mutex_unlock(&configfs_symlink_mutex);
 	configfs_detach_group(&group->cg_item);
-	dentry->d_inode->i_flags |= S_DEAD;
+	d_inode(dentry)->i_flags |= S_DEAD;
 	dont_mount(dentry);
-	mutex_unlock(&dentry->d_inode->i_mutex);
+	mutex_unlock(&d_inode(dentry)->i_mutex);
 
 	d_delete(dentry);
 
-	mutex_unlock(&root->d_inode->i_mutex);
+	mutex_unlock(&d_inode(root)->i_mutex);
 
 	dput(dentry);
 
diff --git a/fs/configfs/file.c b/fs/configfs/file.c
index 56d2cdc9ae0a..403269ffcdf3 100644
--- a/fs/configfs/file.c
+++ b/fs/configfs/file.c
@@ -326,10 +326,10 @@ int configfs_create_file(struct config_item * item, const struct configfs_attrib
 	umode_t mode = (attr->ca_mode & S_IALLUGO) | S_IFREG;
 	int error = 0;
 
-	mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_NORMAL);
+	mutex_lock_nested(&d_inode(dir)->i_mutex, I_MUTEX_NORMAL);
 	error = configfs_make_dirent(parent_sd, NULL, (void *) attr, mode,
 				     CONFIGFS_ITEM_ATTR);
-	mutex_unlock(&dir->d_inode->i_mutex);
+	mutex_unlock(&d_inode(dir)->i_mutex);
 
 	return error;
 }
diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c
index 5423a6a6ecc8..8d89f5fd0331 100644
--- a/fs/configfs/inode.c
+++ b/fs/configfs/inode.c
@@ -56,7 +56,7 @@ static const struct inode_operations configfs_inode_operations ={
 
 int configfs_setattr(struct dentry * dentry, struct iattr * iattr)
 {
-	struct inode * inode = dentry->d_inode;
+	struct inode * inode = d_inode(dentry);
 	struct configfs_dirent * sd = dentry->d_fsdata;
 	struct iattr * sd_iattr;
 	unsigned int ia_valid = iattr->ia_valid;
@@ -186,7 +186,7 @@ int configfs_create(struct dentry * dentry, umode_t mode, void (*init)(struct in
 	if (!dentry)
 		return -ENOENT;
 
-	if (dentry->d_inode)
+	if (d_really_is_positive(dentry))
 		return -EEXIST;
 
 	sd = dentry->d_fsdata;
@@ -194,7 +194,7 @@ int configfs_create(struct dentry * dentry, umode_t mode, void (*init)(struct in
 	if (!inode)
 		return -ENOMEM;
 
-	p_inode = dentry->d_parent->d_inode;
+	p_inode = d_inode(dentry->d_parent);
 	p_inode->i_mtime = p_inode->i_ctime = CURRENT_TIME;
 	configfs_set_inode_lock_class(sd, inode);
 
@@ -236,11 +236,11 @@ void configfs_drop_dentry(struct configfs_dirent * sd, struct dentry * parent)
 
 	if (dentry) {
 		spin_lock(&dentry->d_lock);
-		if (!d_unhashed(dentry) && dentry->d_inode) {
+		if (!d_unhashed(dentry) && d_really_is_positive(dentry)) {
 			dget_dlock(dentry);
 			__d_drop(dentry);
 			spin_unlock(&dentry->d_lock);
-			simple_unlink(parent->d_inode, dentry);
+			simple_unlink(d_inode(parent), dentry);
 		} else
 			spin_unlock(&dentry->d_lock);
 	}
@@ -251,11 +251,11 @@ void configfs_hash_and_remove(struct dentry * dir, const char * name)
 	struct configfs_dirent * sd;
 	struct configfs_dirent * parent_sd = dir->d_fsdata;
 
-	if (dir->d_inode == NULL)
+	if (d_really_is_negative(dir))
 		/* no inode means this hasn't been made visible yet */
 		return;
 
-	mutex_lock(&dir->d_inode->i_mutex);
+	mutex_lock(&d_inode(dir)->i_mutex);
 	list_for_each_entry(sd, &parent_sd->s_children, s_sibling) {
 		if (!sd->s_element)
 			continue;
@@ -268,5 +268,5 @@ void configfs_hash_and_remove(struct dentry * dir, const char * name)
 			break;
 		}
 	}
-	mutex_unlock(&dir->d_inode->i_mutex);
+	mutex_unlock(&d_inode(dir)->i_mutex);
 }