5 files changed, 157 insertions, 161 deletions

diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c
index 800ebf5..51fff9d 100644
--- a/fs/kernfs/dir.c
+++ b/fs/kernfs/dir.c
@@ -19,7 +19,7 @@
 
 DEFINE_MUTEX(sysfs_mutex);
 
-#define rb_to_kn(X) rb_entry((X), struct kernfs_node, s_rb)
+#define rb_to_kn(X) rb_entry((X), struct kernfs_node, rb)
 
 /**
  *	sysfs_name_hash
@@ -47,18 +47,17 @@ static unsigned int sysfs_name_hash(const char *name, const void *ns)
 static int sysfs_name_compare(unsigned int hash, const char *name,
 			      const void *ns, const struct kernfs_node *kn)
 {
-	if (hash != kn->s_hash)
-		return hash - kn->s_hash;
-	if (ns != kn->s_ns)
-		return ns - kn->s_ns;
-	return strcmp(name, kn->s_name);
+	if (hash != kn->hash)
+		return hash - kn->hash;
+	if (ns != kn->ns)
+		return ns - kn->ns;
+	return strcmp(name, kn->name);
 }
 
 static int sysfs_sd_compare(const struct kernfs_node *left,
 			    const struct kernfs_node *right)
 {
-	return sysfs_name_compare(left->s_hash, left->s_name, left->s_ns,
-				  right);
+	return sysfs_name_compare(left->hash, left->name, left->ns, right);
 }
 
 /**
@@ -66,7 +65,7 @@ static int sysfs_sd_compare(const struct kernfs_node *left,
  *	@kn: kernfs_node of interest
  *
  *	Link @kn into its sibling rbtree which starts from
- *	@kn->s_parent->s_dir.children.
+ *	@kn->parent->dir.children.
  *
  *	Locking:
  *	mutex_lock(sysfs_mutex)
@@ -76,11 +75,11 @@ static int sysfs_sd_compare(const struct kernfs_node *left,
  */
 static int sysfs_link_sibling(struct kernfs_node *kn)
 {
-	struct rb_node **node = &kn->s_parent->s_dir.children.rb_node;
+	struct rb_node **node = &kn->parent->dir.children.rb_node;
 	struct rb_node *parent = NULL;
 
 	if (sysfs_type(kn) == SYSFS_DIR)
-		kn->s_parent->s_dir.subdirs++;
+		kn->parent->dir.subdirs++;
 
 	while (*node) {
 		struct kernfs_node *pos;
@@ -90,15 +89,15 @@ static int sysfs_link_sibling(struct kernfs_node *kn)
 		parent = *node;
 		result = sysfs_sd_compare(kn, pos);
 		if (result < 0)
-			node = &pos->s_rb.rb_left;
+			node = &pos->rb.rb_left;
 		else if (result > 0)
-			node = &pos->s_rb.rb_right;
+			node = &pos->rb.rb_right;
 		else
 			return -EEXIST;
 	}
 	/* add new node and rebalance the tree */
-	rb_link_node(&kn->s_rb, parent, node);
-	rb_insert_color(&kn->s_rb, &kn->s_parent->s_dir.children);
+	rb_link_node(&kn->rb, parent, node);
+	rb_insert_color(&kn->rb, &kn->parent->dir.children);
 	return 0;
 }
 
@@ -107,7 +106,7 @@ static int sysfs_link_sibling(struct kernfs_node *kn)
  *	@kn: kernfs_node of interest
  *
  *	Unlink @kn from its sibling rbtree which starts from
- *	kn->s_parent->s_dir.children.
+ *	kn->parent->dir.children.
  *
  *	Locking:
  *	mutex_lock(sysfs_mutex)
@@ -115,9 +114,9 @@ static int sysfs_link_sibling(struct kernfs_node *kn)
 static void sysfs_unlink_sibling(struct kernfs_node *kn)
 {
 	if (sysfs_type(kn) == SYSFS_DIR)
-		kn->s_parent->s_dir.subdirs--;
+		kn->parent->dir.subdirs--;
 
-	rb_erase(&kn->s_rb, &kn->s_parent->s_dir.children);
+	rb_erase(&kn->rb, &kn->parent->dir.children);
 }
 
 /**
@@ -135,10 +134,10 @@ struct kernfs_node *sysfs_get_active(struct kernfs_node *kn)
 	if (unlikely(!kn))
 		return NULL;
 
-	if (!atomic_inc_unless_negative(&kn->s_active))
+	if (!atomic_inc_unless_negative(&kn->active))
 		return NULL;
 
-	if (kn->s_flags & SYSFS_FLAG_LOCKDEP)
+	if (kn->flags & SYSFS_FLAG_LOCKDEP)
 		rwsem_acquire_read(&kn->dep_map, 0, 1, _RET_IP_);
 	return kn;
 }
@@ -157,9 +156,9 @@ void sysfs_put_active(struct kernfs_node *kn)
 	if (unlikely(!kn))
 		return;
 
-	if (kn->s_flags & SYSFS_FLAG_LOCKDEP)
+	if (kn->flags & SYSFS_FLAG_LOCKDEP)
 		rwsem_release(&kn->dep_map, 1, _RET_IP_);
-	v = atomic_dec_return(&kn->s_active);
+	v = atomic_dec_return(&kn->active);
 	if (likely(v != SD_DEACTIVATED_BIAS))
 		return;
 
@@ -181,7 +180,7 @@ static void sysfs_deactivate(struct kernfs_node *kn)
 	DECLARE_COMPLETION_ONSTACK(wait);
 	int v;
 
-	BUG_ON(!(kn->s_flags & SYSFS_FLAG_REMOVED));
+	BUG_ON(!(kn->flags & SYSFS_FLAG_REMOVED));
 
 	if (!(sysfs_type(kn) & SYSFS_ACTIVE_REF))
 		return;
@@ -192,7 +191,7 @@ static void sysfs_deactivate(struct kernfs_node *kn)
 	/* atomic_add_return() is a mb(), put_active() will always see
 	 * the updated kn->u.completion.
 	 */
-	v = atomic_add_return(SD_DEACTIVATED_BIAS, &kn->s_active);
+	v = atomic_add_return(SD_DEACTIVATED_BIAS, &kn->active);
 
 	if (v != SD_DEACTIVATED_BIAS) {
 		lock_contended(&kn->dep_map, _RET_IP_);
@@ -210,8 +209,8 @@ static void sysfs_deactivate(struct kernfs_node *kn)
 void kernfs_get(struct kernfs_node *kn)
 {
 	if (kn) {
-		WARN_ON(!atomic_read(&kn->s_count));
-		atomic_inc(&kn->s_count);
+		WARN_ON(!atomic_read(&kn->count));
+		atomic_inc(&kn->count);
 	}
 }
 EXPORT_SYMBOL_GPL(kernfs_get);
@@ -227,36 +226,36 @@ void kernfs_put(struct kernfs_node *kn)
 	struct kernfs_node *parent;
 	struct kernfs_root *root;
 
-	if (!kn || !atomic_dec_and_test(&kn->s_count))
+	if (!kn || !atomic_dec_and_test(&kn->count))
 		return;
 	root = kernfs_root(kn);
  repeat:
 	/* Moving/renaming is always done while holding reference.
-	 * kn->s_parent won't change beneath us.
+	 * kn->parent won't change beneath us.
 	 */
-	parent = kn->s_parent;
+	parent = kn->parent;
 
-	WARN(!(kn->s_flags & SYSFS_FLAG_REMOVED),
+	WARN(!(kn->flags & SYSFS_FLAG_REMOVED),
 		"sysfs: free using entry: %s/%s\n",
-		parent ? parent->s_name : "", kn->s_name);
+		parent ? parent->name : "", kn->name);
 
 	if (sysfs_type(kn) == SYSFS_KOBJ_LINK)
-		kernfs_put(kn->s_symlink.target_kn);
+		kernfs_put(kn->symlink.target_kn);
 	if (sysfs_type(kn) & SYSFS_COPY_NAME)
-		kfree(kn->s_name);
-	if (kn->s_iattr) {
-		if (kn->s_iattr->ia_secdata)
-			security_release_secctx(kn->s_iattr->ia_secdata,
-						kn->s_iattr->ia_secdata_len);
-		simple_xattrs_free(&kn->s_iattr->xattrs);
+		kfree(kn->name);
+	if (kn->iattr) {
+		if (kn->iattr->ia_secdata)
+			security_release_secctx(kn->iattr->ia_secdata,
+						kn->iattr->ia_secdata_len);
+		simple_xattrs_free(&kn->iattr->xattrs);
 	}
-	kfree(kn->s_iattr);
-	ida_simple_remove(&root->ino_ida, kn->s_ino);
+	kfree(kn->iattr);
+	ida_simple_remove(&root->ino_ida, kn->ino);
 	kmem_cache_free(sysfs_dir_cachep, kn);
 
 	kn = parent;
 	if (kn) {
-		if (atomic_dec_and_test(&kn->s_count))
+		if (atomic_dec_and_test(&kn->count))
 			goto repeat;
 	} else {
 		/* just released the root kn, free @root too */
@@ -269,7 +268,7 @@ EXPORT_SYMBOL_GPL(kernfs_put);
 static int sysfs_dentry_delete(const struct dentry *dentry)
 {
 	struct kernfs_node *kn = dentry->d_fsdata;
-	return !(kn && !(kn->s_flags & SYSFS_FLAG_REMOVED));
+	return !(kn && !(kn->flags & SYSFS_FLAG_REMOVED));
 }
 
 static int sysfs_dentry_revalidate(struct dentry *dentry, unsigned int flags)
@@ -283,20 +282,20 @@ static int sysfs_dentry_revalidate(struct dentry *dentry, unsigned int flags)
 	mutex_lock(&sysfs_mutex);
 
 	/* The sysfs dirent has been deleted */
-	if (kn->s_flags & SYSFS_FLAG_REMOVED)
+	if (kn->flags & SYSFS_FLAG_REMOVED)
 		goto out_bad;
 
 	/* The sysfs dirent has been moved? */
-	if (dentry->d_parent->d_fsdata != kn->s_parent)
+	if (dentry->d_parent->d_fsdata != kn->parent)
 		goto out_bad;
 
 	/* The sysfs dirent has been renamed */
-	if (strcmp(dentry->d_name.name, kn->s_name) != 0)
+	if (strcmp(dentry->d_name.name, kn->name) != 0)
 		goto out_bad;
 
 	/* The sysfs dirent has been moved to a different namespace */
-	if (kn->s_parent && kernfs_ns_enabled(kn->s_parent) &&
-	    sysfs_info(dentry->d_sb)->ns != kn->s_ns)
+	if (kn->parent && kernfs_ns_enabled(kn->parent) &&
+	    sysfs_info(dentry->d_sb)->ns != kn->ns)
 		goto out_bad;
 
 	mutex_unlock(&sysfs_mutex);
@@ -356,14 +355,14 @@ struct kernfs_node *sysfs_new_dirent(struct kernfs_root *root,
 	ret = ida_simple_get(&root->ino_ida, 1, 0, GFP_KERNEL);
 	if (ret < 0)
 		goto err_out2;
-	kn->s_ino = ret;
+	kn->ino = ret;
 
-	atomic_set(&kn->s_count, 1);
-	atomic_set(&kn->s_active, 0);
+	atomic_set(&kn->count, 1);
+	atomic_set(&kn->active, 0);
 
-	kn->s_name = name;
-	kn->s_mode = mode;
-	kn->s_flags = type | SYSFS_FLAG_REMOVED;
+	kn->name = name;
+	kn->mode = mode;
+	kn->flags = type | SYSFS_FLAG_REMOVED;
 
 	return kn;
 
@@ -400,9 +399,9 @@ void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt)
  *	@kn: kernfs_node to be added
  *	@parent: the parent kernfs_node to add @kn to
  *
- *	Get @parent and set @kn->s_parent to it and increment nlink of
- *	the parent inode if @kn is a directory and link into the children
- *	list of the parent.
+ *	Get @parent and set @kn->parent to it and increment nlink of the
+ *	parent inode if @kn is a directory and link into the children list
+ *	of the parent.
  *
  *	This function should be called between calls to
  *	sysfs_addrm_start() and sysfs_addrm_finish() and should be
@@ -422,18 +421,17 @@ int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct kernfs_node *kn,
 	struct sysfs_inode_attrs *ps_iattr;
 	int ret;
 
-	if (has_ns != (bool)kn->s_ns) {
+	if (has_ns != (bool)kn->ns) {
 		WARN(1, KERN_WARNING "sysfs: ns %s in '%s' for '%s'\n",
-		     has_ns ? "required" : "invalid",
-		     parent->s_name, kn->s_name);
+		     has_ns ? "required" : "invalid", parent->name, kn->name);
 		return -EINVAL;
 	}
 
 	if (sysfs_type(parent) != SYSFS_DIR)
 		return -EINVAL;
 
-	kn->s_hash = sysfs_name_hash(kn->s_name, kn->s_ns);
-	kn->s_parent = parent;
+	kn->hash = sysfs_name_hash(kn->name, kn->ns);
+	kn->parent = parent;
 	kernfs_get(parent);
 
 	ret = sysfs_link_sibling(kn);
@@ -441,14 +439,14 @@ int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct kernfs_node *kn,
 		return ret;
 
 	/* Update timestamps on the parent */
-	ps_iattr = parent->s_iattr;
+	ps_iattr = parent->iattr;
 	if (ps_iattr) {
 		struct iattr *ps_iattrs = &ps_iattr->ia_iattr;
 		ps_iattrs->ia_ctime = ps_iattrs->ia_mtime = CURRENT_TIME;
 	}
 
 	/* Mark the entry added into directory tree */
-	kn->s_flags &= ~SYSFS_FLAG_REMOVED;
+	kn->flags &= ~SYSFS_FLAG_REMOVED;
 
 	return 0;
 }
@@ -477,21 +475,21 @@ static void sysfs_remove_one(struct sysfs_addrm_cxt *acxt,
 	 * Removal can be called multiple times on the same node.  Only the
 	 * first invocation is effective and puts the base ref.
 	 */
-	if (kn->s_flags & SYSFS_FLAG_REMOVED)
+	if (kn->flags & SYSFS_FLAG_REMOVED)
 		return;
 
-	if (kn->s_parent) {
+	if (kn->parent) {
 		sysfs_unlink_sibling(kn);
 
 		/* Update timestamps on the parent */
-		ps_iattr = kn->s_parent->s_iattr;
+		ps_iattr = kn->parent->iattr;
 		if (ps_iattr) {
 			ps_iattr->ia_iattr.ia_ctime = CURRENT_TIME;
 			ps_iattr->ia_iattr.ia_mtime = CURRENT_TIME;
 		}
 	}
 
-	kn->s_flags |= SYSFS_FLAG_REMOVED;
+	kn->flags |= SYSFS_FLAG_REMOVED;
 	kn->u.removed_list = acxt->removed;
 	acxt->removed = kn;
 }
@@ -538,7 +536,7 @@ static struct kernfs_node *kernfs_find_ns(struct kernfs_node *parent,
 					  const unsigned char *name,
 					  const void *ns)
 {
-	struct rb_node *node = parent->s_dir.children.rb_node;
+	struct rb_node *node = parent->dir.children.rb_node;
 	bool has_ns = kernfs_ns_enabled(parent);
 	unsigned int hash;
 
@@ -546,8 +544,7 @@ static struct kernfs_node *kernfs_find_ns(struct kernfs_node *parent,
 
 	if (has_ns != (bool)ns) {
 		WARN(1, KERN_WARNING "sysfs: ns %s in '%s' for '%s'\n",
-		     has_ns ? "required" : "invalid",
-		     parent->s_name, name);
+		     has_ns ? "required" : "invalid", parent->name, name);
 		return NULL;
 	}
 
@@ -617,9 +614,9 @@ struct kernfs_root *kernfs_create_root(void *priv)
 		return ERR_PTR(-ENOMEM);
 	}
 
-	kn->s_flags &= ~SYSFS_FLAG_REMOVED;
+	kn->flags &= ~SYSFS_FLAG_REMOVED;
 	kn->priv = priv;
-	kn->s_dir.root = root;
+	kn->dir.root = root;
 
 	root->kn = kn;
 
@@ -661,8 +658,8 @@ struct kernfs_node *kernfs_create_dir_ns(struct kernfs_node *parent,
 	if (!kn)
 		return ERR_PTR(-ENOMEM);
 
-	kn->s_dir.root = parent->s_dir.root;
-	kn->s_ns = ns;
+	kn->dir.root = parent->dir.root;
+	kn->ns = ns;
 	kn->priv = priv;
 
 	/* link in */
@@ -738,7 +735,7 @@ static struct kernfs_node *sysfs_leftmost_descendant(struct kernfs_node *pos)
 		if (sysfs_type(pos) != SYSFS_DIR)
 			break;
 
-		rbn = rb_first(&pos->s_dir.children);
+		rbn = rb_first(&pos->dir.children);
 		if (!rbn)
 			break;
 
@@ -773,12 +770,12 @@ static struct kernfs_node *sysfs_next_descendant_post(struct kernfs_node *pos,
 		return NULL;
 
 	/* if there's an unvisited sibling, visit its leftmost descendant */
-	rbn = rb_next(&pos->s_rb);
+	rbn = rb_next(&pos->rb);
 	if (rbn)
 		return sysfs_leftmost_descendant(rb_to_kn(rbn));
 
 	/* no sibling left, visit parent */
-	return pos->s_parent;
+	return pos->parent;
 }
 
 static void __kernfs_remove(struct sysfs_addrm_cxt *acxt,
@@ -789,7 +786,7 @@ static void __kernfs_remove(struct sysfs_addrm_cxt *acxt,
 	if (!kn)
 		return;
 
-	pr_debug("sysfs %s: removing\n", kn->s_name);
+	pr_debug("sysfs %s: removing\n", kn->name);
 
 	next = NULL;
 	do {
@@ -865,8 +862,8 @@ int kernfs_rename_ns(struct kernfs_node *kn, struct kernfs_node *new_parent,
 	mutex_lock(&sysfs_mutex);
 
 	error = 0;
-	if ((kn->s_parent == new_parent) && (kn->s_ns == new_ns) &&
-	    (strcmp(kn->s_name, new_name) == 0))
+	if ((kn->parent == new_parent) && (kn->ns == new_ns) &&
+	    (strcmp(kn->name, new_name) == 0))
 		goto out;	/* nothing to rename */
 
 	error = -EEXIST;
@@ -874,14 +871,14 @@ int kernfs_rename_ns(struct kernfs_node *kn, struct kernfs_node *new_parent,
 		goto out;
 
 	/* rename kernfs_node */
-	if (strcmp(kn->s_name, new_name) != 0) {
+	if (strcmp(kn->name, new_name) != 0) {
 		error = -ENOMEM;
 		new_name = kstrdup(new_name, GFP_KERNEL);
 		if (!new_name)
 			goto out;
 
-		kfree(kn->s_name);
-		kn->s_name = new_name;
+		kfree(kn->name);
+		kn->name = new_name;
 	}
 
 	/*
@@ -889,10 +886,10 @@ int kernfs_rename_ns(struct kernfs_node *kn, struct kernfs_node *new_parent,
 	 */
 	sysfs_unlink_sibling(kn);
 	kernfs_get(new_parent);
-	kernfs_put(kn->s_parent);
-	kn->s_ns = new_ns;
-	kn->s_hash = sysfs_name_hash(kn->s_name, kn->s_ns);
-	kn->s_parent = new_parent;
+	kernfs_put(kn->parent);
+	kn->ns = new_ns;
+	kn->hash = sysfs_name_hash(kn->name, kn->ns);
+	kn->parent = new_parent;
 	sysfs_link_sibling(kn);
 
 	error = 0;
@@ -904,7 +901,7 @@ int kernfs_rename_ns(struct kernfs_node *kn, struct kernfs_node *new_parent,
 /* Relationship between s_mode and the DT_xxx types */
 static inline unsigned char dt_type(struct kernfs_node *kn)
 {
-	return (kn->s_mode >> 12) & 15;
+	return (kn->mode >> 12) & 15;
 }
 
 static int sysfs_dir_release(struct inode *inode, struct file *filp)
@@ -917,29 +914,28 @@ static struct kernfs_node *sysfs_dir_pos(const void *ns,
 	struct kernfs_node *parent, loff_t hash, struct kernfs_node *pos)
 {
 	if (pos) {
-		int valid = !(pos->s_flags & SYSFS_FLAG_REMOVED) &&
-			pos->s_parent == parent &&
-			hash == pos->s_hash;
+		int valid = !(pos->flags & SYSFS_FLAG_REMOVED) &&
+			pos->parent == parent && hash == pos->hash;
 		kernfs_put(pos);
 		if (!valid)
 			pos = NULL;
 	}
 	if (!pos && (hash > 1) && (hash < INT_MAX)) {
-		struct rb_node *node = parent->s_dir.children.rb_node;
+		struct rb_node *node = parent->dir.children.rb_node;
 		while (node) {
 			pos = rb_to_kn(node);
 
-			if (hash < pos->s_hash)
+			if (hash < pos->hash)
 				node = node->rb_left;
-			else if (hash > pos->s_hash)
+			else if (hash > pos->hash)
 				node = node->rb_right;
 			else
 				break;
 		}
 	}
 	/* Skip over entries in the wrong namespace */
-	while (pos && pos->s_ns != ns) {
-		struct rb_node *node = rb_next(&pos->s_rb);
+	while (pos && pos->ns != ns) {
+		struct rb_node *node = rb_next(&pos->rb);
 		if (!node)
 			pos = NULL;
 		else
@@ -954,12 +950,12 @@ static struct kernfs_node *sysfs_dir_next_pos(const void *ns,
 	pos = sysfs_dir_pos(ns, parent, ino, pos);
 	if (pos)
 		do {
-			struct rb_node *node = rb_next(&pos->s_rb);
+			struct rb_node *node = rb_next(&pos->rb);
 			if (!node)
 				pos = NULL;
 			else
 				pos = rb_to_kn(node);
-		} while (pos && pos->s_ns != ns);
+		} while (pos && pos->ns != ns);
 	return pos;
 }
 
@@ -980,12 +976,12 @@ static int sysfs_readdir(struct file *file, struct dir_context *ctx)
 	for (pos = sysfs_dir_pos(ns, parent, ctx->pos, pos);
 	     pos;
 	     pos = sysfs_dir_next_pos(ns, parent, ctx->pos, pos)) {
-		const char *name = pos->s_name;
+		const char *name = pos->name;
 		unsigned int type = dt_type(pos);
 		int len = strlen(name);
-		ino_t ino = pos->s_ino;
+		ino_t ino = pos->ino;
 
-		ctx->pos = pos->s_hash;
+		ctx->pos = pos->hash;
 		file->private_data = pos;
 		kernfs_get(pos);
 
diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
index 1bf07de..5277021 100644
--- a/fs/kernfs/file.c
+++ b/fs/kernfs/file.c
@@ -21,7 +21,7 @@
  * There's one sysfs_open_file for each open file and one sysfs_open_dirent
  * for each kernfs_node with one or more open files.
  *
- * kernfs_node->s_attr.open points to sysfs_open_dirent.  s_attr.open is
+ * kernfs_node->attr.open points to sysfs_open_dirent.  attr.open is
  * protected by sysfs_open_dirent_lock.
  *
  * filp->private_data points to seq_file whose ->private points to
@@ -49,9 +49,9 @@ static struct sysfs_open_file *sysfs_of(struct file *file)
  */
 static const struct kernfs_ops *kernfs_ops(struct kernfs_node *kn)
 {
-	if (kn->s_flags & SYSFS_FLAG_LOCKDEP)
+	if (kn->flags & SYSFS_FLAG_LOCKDEP)
 		lockdep_assert_held(kn);
-	return kn->s_attr.ops;
+	return kn->attr.ops;
 }
 
 static void *kernfs_seq_start(struct seq_file *sf, loff_t *ppos)
@@ -112,9 +112,9 @@ static int kernfs_seq_show(struct seq_file *sf, void *v)
 {
 	struct sysfs_open_file *of = sf->private;
 
-	of->event = atomic_read(&of->kn->s_attr.open->event);
+	of->event = atomic_read(&of->kn->attr.open->event);
 
-	return of->kn->s_attr.ops->seq_show(sf, v);
+	return of->kn->attr.ops->seq_show(sf, v);
 }
 
 static const struct seq_operations kernfs_seq_ops = {
@@ -189,7 +189,7 @@ static ssize_t kernfs_file_read(struct file *file, char __user *user_buf,
 {
 	struct sysfs_open_file *of = sysfs_of(file);
 
-	if (of->kn->s_flags & SYSFS_FLAG_HAS_SEQ_SHOW)
+	if (of->kn->flags & SYSFS_FLAG_HAS_SEQ_SHOW)
 		return seq_read(file, user_buf, count, ppos);
 	else
 		return kernfs_file_direct_read(of, user_buf, count, ppos);
@@ -428,7 +428,7 @@ static int kernfs_file_mmap(struct file *file, struct vm_area_struct *vma)
 	 * without grabbing @of->mutex by testing HAS_MMAP flag.  See the
 	 * comment in kernfs_file_open() for more details.
 	 */
-	if (!(of->kn->s_flags & SYSFS_FLAG_HAS_MMAP))
+	if (!(of->kn->flags & SYSFS_FLAG_HAS_MMAP))
 		return -ENODEV;
 
 	mutex_lock(&of->mutex);
@@ -477,8 +477,8 @@ out_unlock:
  *	@kn: target kernfs_node
  *	@of: sysfs_open_file for this instance of open
  *
- *	If @kn->s_attr.open exists, increment its reference count;
- *	otherwise, create one.  @of is chained to the files list.
+ *	If @kn->attr.open exists, increment its reference count; otherwise,
+ *	create one.  @of is chained to the files list.
  *
  *	LOCKING:
  *	Kernel thread context (may sleep).
@@ -495,12 +495,12 @@ static int sysfs_get_open_dirent(struct kernfs_node *kn,
 	mutex_lock(&sysfs_open_file_mutex);
 	spin_lock_irq(&sysfs_open_dirent_lock);
 
-	if (!kn->s_attr.open && new_od) {
-		kn->s_attr.open = new_od;
+	if (!kn->attr.open && new_od) {
+		kn->attr.open = new_od;
 		new_od = NULL;
 	}
 
-	od = kn->s_attr.open;
+	od = kn->attr.open;
 	if (od) {
 		atomic_inc(&od->refcnt);
 		list_add_tail(&of->list, &od->files);
@@ -531,7 +531,7 @@ static int sysfs_get_open_dirent(struct kernfs_node *kn,
  *	@kn: target kernfs_nodet
  *	@of: associated sysfs_open_file
  *
- *	Put @kn->s_attr.open and unlink @of from the files list.  If
+ *	Put @kn->attr.open and unlink @of from the files list.  If
  *	reference count reaches zero, disassociate and free it.
  *
  *	LOCKING:
@@ -540,7 +540,7 @@ static int sysfs_get_open_dirent(struct kernfs_node *kn,
 static void sysfs_put_open_dirent(struct kernfs_node *kn,
 				  struct sysfs_open_file *of)
 {
-	struct sysfs_open_dirent *od = kn->s_attr.open;
+	struct sysfs_open_dirent *od = kn->attr.open;
 	unsigned long flags;
 
 	mutex_lock(&sysfs_open_file_mutex);
@@ -550,7 +550,7 @@ static void sysfs_put_open_dirent(struct kernfs_node *kn,
 		list_del(&of->list);
 
 	if (atomic_dec_and_test(&od->refcnt))
-		kn->s_attr.open = NULL;
+		kn->attr.open = NULL;
 	else
 		od = NULL;
 
@@ -668,11 +668,11 @@ void sysfs_unmap_bin_file(struct kernfs_node *kn)
 	struct sysfs_open_dirent *od;
 	struct sysfs_open_file *of;
 
-	if (!(kn->s_flags & SYSFS_FLAG_HAS_MMAP))
+	if (!(kn->flags & SYSFS_FLAG_HAS_MMAP))
 		return;
 
 	spin_lock_irq(&sysfs_open_dirent_lock);
-	od = kn->s_attr.open;
+	od = kn->attr.open;
 	if (od)
 		atomic_inc(&od->refcnt);
 	spin_unlock_irq(&sysfs_open_dirent_lock);
@@ -706,7 +706,7 @@ static unsigned int kernfs_file_poll(struct file *filp, poll_table *wait)
 {
 	struct sysfs_open_file *of = sysfs_of(filp);
 	struct kernfs_node *kn = filp->f_path.dentry->d_fsdata;
-	struct sysfs_open_dirent *od = kn->s_attr.open;
+	struct sysfs_open_dirent *od = kn->attr.open;
 
 	/* need parent for the kobj, grab both */
 	if (!sysfs_get_active(kn))
@@ -739,7 +739,7 @@ void kernfs_notify(struct kernfs_node *kn)
 	spin_lock_irqsave(&sysfs_open_dirent_lock, flags);
 
 	if (!WARN_ON(sysfs_type(kn) != SYSFS_KOBJ_ATTR)) {
-		od = kn->s_attr.open;
+		od = kn->attr.open;
 		if (od) {
 			atomic_inc(&od->event);
 			wake_up_interruptible(&od->poll);
@@ -789,27 +789,27 @@ struct kernfs_node *kernfs_create_file_ns_key(struct kernfs_node *parent,
 	if (!kn)
 		return ERR_PTR(-ENOMEM);
 
-	kn->s_attr.ops = ops;
-	kn->s_attr.size = size;
-	kn->s_ns = ns;
+	kn->attr.ops = ops;
+	kn->attr.size = size;
+	kn->ns = ns;
 	kn->priv = priv;
 
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
 	if (key) {
 		lockdep_init_map(&kn->dep_map, "s_active", key, 0);
-		kn->s_flags |= SYSFS_FLAG_LOCKDEP;
+		kn->flags |= SYSFS_FLAG_LOCKDEP;
 	}
 #endif
 
 	/*
-	 * kn->s_attr.ops is accesible only while holding active ref.  We
+	 * kn->attr.ops is accesible only while holding active ref.  We
 	 * need to know whether some ops are implemented outside active
 	 * ref.  Cache their existence in flags.
 	 */
 	if (ops->seq_show)
-		kn->s_flags |= SYSFS_FLAG_HAS_SEQ_SHOW;
+		kn->flags |= SYSFS_FLAG_HAS_SEQ_SHOW;
 	if (ops->mmap)
-		kn->s_flags |= SYSFS_FLAG_HAS_MMAP;
+		kn->flags |= SYSFS_FLAG_HAS_MMAP;
 
 	sysfs_addrm_start(&acxt);
 	rc = sysfs_add_one(&acxt, kn, parent);
diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c
index 9e74eed..f6c0aae 100644
--- a/fs/kernfs/inode.c
+++ b/fs/kernfs/inode.c
@@ -50,23 +50,23 @@ static struct sysfs_inode_attrs *sysfs_inode_attrs(struct kernfs_node *kn)
 {
 	struct iattr *iattrs;
 
-	if (kn->s_iattr)
-		return kn->s_iattr;
+	if (kn->iattr)
+		return kn->iattr;
 
-	kn->s_iattr = kzalloc(sizeof(struct sysfs_inode_attrs), GFP_KERNEL);
-	if (!kn->s_iattr)
+	kn->iattr = kzalloc(sizeof(struct sysfs_inode_attrs), GFP_KERNEL);
+	if (!kn->iattr)
 		return NULL;
-	iattrs = &kn->s_iattr->ia_iattr;
+	iattrs = &kn->iattr->ia_iattr;
 
 	/* assign default attributes */
-	iattrs->ia_mode = kn->s_mode;
+	iattrs->ia_mode = kn->mode;
 	iattrs->ia_uid = GLOBAL_ROOT_UID;
 	iattrs->ia_gid = GLOBAL_ROOT_GID;
 	iattrs->ia_atime = iattrs->ia_mtime = iattrs->ia_ctime = CURRENT_TIME;
 
-	simple_xattrs_init(&kn->s_iattr->xattrs);
+	simple_xattrs_init(&kn->iattr->xattrs);
 
-	return kn->s_iattr;
+	return kn->iattr;
 }
 
 static int __kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr)
@@ -93,7 +93,7 @@ static int __kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr)
 		iattrs->ia_ctime = iattr->ia_ctime;
 	if (ia_valid & ATTR_MODE) {
 		umode_t mode = iattr->ia_mode;
-		iattrs->ia_mode = kn->s_mode = mode;
+		iattrs->ia_mode = kn->mode = mode;
 	}
 	return 0;
 }
@@ -256,9 +256,9 @@ static inline void set_inode_attr(struct inode *inode, struct iattr *iattr)
 
 static void sysfs_refresh_inode(struct kernfs_node *kn, struct inode *inode)
 {
-	struct sysfs_inode_attrs *attrs = kn->s_iattr;
+	struct sysfs_inode_attrs *attrs = kn->iattr;
 
-	inode->i_mode = kn->s_mode;
+	inode->i_mode = kn->mode;
 	if (attrs) {
 		/*
 		 * kernfs_node has non-default attributes get them from
@@ -270,7 +270,7 @@ static void sysfs_refresh_inode(struct kernfs_node *kn, struct inode *inode)
 	}
 
 	if (sysfs_type(kn) == SYSFS_DIR)
-		set_nlink(inode, kn->s_dir.subdirs + 2);
+		set_nlink(inode, kn->dir.subdirs + 2);
 }
 
 int sysfs_getattr(struct vfsmount *mnt, struct dentry *dentry,
@@ -295,7 +295,7 @@ static void sysfs_init_inode(struct kernfs_node *kn, struct inode *inode)
 	inode->i_mapping->backing_dev_info = &sysfs_backing_dev_info;
 	inode->i_op = &sysfs_inode_operations;
 
-	set_default_inode_attr(inode, kn->s_mode);
+	set_default_inode_attr(inode, kn->mode);
 	sysfs_refresh_inode(kn, inode);
 
 	/* initialize inode according to type */
@@ -305,7 +305,7 @@ static void sysfs_init_inode(struct kernfs_node *kn, struct inode *inode)
 		inode->i_fop = &sysfs_dir_operations;
 		break;
 	case SYSFS_KOBJ_ATTR:
-		inode->i_size = kn->s_attr.size;
+		inode->i_size = kn->attr.size;
 		inode->i_fop = &kernfs_file_operations;
 		break;
 	case SYSFS_KOBJ_LINK:
@@ -337,7 +337,7 @@ struct inode *sysfs_get_inode(struct super_block *sb, struct kernfs_node *kn)
 {
 	struct inode *inode;
 
-	inode = iget_locked(sb, kn->s_ino);
+	inode = iget_locked(sb, kn->ino);
 	if (inode && (inode->i_state & I_NEW))
 		sysfs_init_inode(kn, inode);
 
diff --git a/fs/kernfs/kernfs-internal.h b/fs/kernfs/kernfs-internal.h
index b7ea76c..2dbb1cb 100644
--- a/fs/kernfs/kernfs-internal.h
+++ b/fs/kernfs/kernfs-internal.h
@@ -39,9 +39,9 @@ struct sysfs_inode_attrs {
 static inline struct kernfs_root *kernfs_root(struct kernfs_node *kn)
 {
 	/* if parent exists, it's always a dir; otherwise, @sd is a dir */
-	if (kn->s_parent)
-		kn = kn->s_parent;
-	return kn->s_dir.root;
+	if (kn->parent)
+		kn = kn->parent;
+	return kn->dir.root;
 }
 
 /*
diff --git a/fs/kernfs/symlink.c b/fs/kernfs/symlink.c
index 29dcf5e..5ac1a57 100644
--- a/fs/kernfs/symlink.c
+++ b/fs/kernfs/symlink.c
@@ -36,8 +36,8 @@ struct kernfs_node *kernfs_create_link(struct kernfs_node *parent,
 		return ERR_PTR(-ENOMEM);
 
 	if (kernfs_ns_enabled(parent))
-		kn->s_ns = target->s_ns;
-	kn->s_symlink.target_kn = target;
+		kn->ns = target->ns;
+	kn->symlink.target_kn = target;
 	kernfs_get(target);	/* ref owned by symlink */
 
 	sysfs_addrm_start(&acxt);
@@ -60,24 +60,24 @@ static int sysfs_get_target_path(struct kernfs_node *parent,
 
 	/* go up to the root, stop at the base */
 	base = parent;
-	while (base->s_parent) {
-		kn = target->s_parent;
-		while (kn->s_parent && base != kn)
-			kn = kn->s_parent;
+	while (base->parent) {
+		kn = target->parent;
+		while (kn->parent && base != kn)
+			kn = kn->parent;
 
 		if (base == kn)
 			break;
 
 		strcpy(s, "../");
 		s += 3;
-		base = base->s_parent;
+		base = base->parent;
 	}
 
 	/* determine end of target string for reverse fillup */
 	kn = target;
-	while (kn->s_parent && kn != base) {
-		len += strlen(kn->s_name) + 1;
-		kn = kn->s_parent;
+	while (kn->parent && kn != base) {
+		len += strlen(kn->name) + 1;
+		kn = kn->parent;
 	}
 
 	/* check limits */
@@ -89,15 +89,15 @@ static int sysfs_get_target_path(struct kernfs_node *parent,
 
 	/* reverse fillup of target string from target to base */
 	kn = target;
-	while (kn->s_parent && kn != base) {
-		int slen = strlen(kn->s_name);
+	while (kn->parent && kn != base) {
+		int slen = strlen(kn->name);
 
 		len -= slen;
-		strncpy(s + len, kn->s_name, slen);
+		strncpy(s + len, kn->name, slen);
 		if (len)
 			s[--len] = '/';
 
-		kn = kn->s_parent;
+		kn = kn->parent;
 	}
 
 	return 0;
@@ -106,8 +106,8 @@ static int sysfs_get_target_path(struct kernfs_node *parent,
 static int sysfs_getlink(struct dentry *dentry, char *path)
 {
 	struct kernfs_node *kn = dentry->d_fsdata;
-	struct kernfs_node *parent = kn->s_parent;
-	struct kernfs_node *target = kn->s_symlink.target_kn;
+	struct kernfs_node *parent = kn->parent;
+	struct kernfs_node *target = kn->symlink.target_kn;
 	int error;
 
 	mutex_lock(&sysfs_mutex);