kernfs: s/sysfs_dirent/kernfs_node/ and rename its friends accordingly

kernfs has just been separated out from sysfs and we're already in
full conflict mode.  Nothing can make the situation any worse.  Let's
take the chance to name things properly.

This patch performs the following renames.

* s/sysfs_elem_dir/kernfs_elem_dir/
* s/sysfs_elem_symlink/kernfs_elem_symlink/
* s/sysfs_elem_attr/kernfs_elem_file/
* s/sysfs_dirent/kernfs_node/
* s/sd/kn/ in kernfs proper
* s/parent_sd/parent/
* s/target_sd/target/
* s/dir_sd/parent/
* s/to_sysfs_dirent()/rb_to_kn()/
* misc renames of local vars when they conflict with the above

Because md, mic and gpio dig into sysfs details, this patch ends up
modifying them.  All are sysfs_dirent renames and trivial.  While we
can avoid these by introducing a dummy wrapping struct sysfs_dirent
around kernfs_node, given the limited usage outside kernfs and sysfs
proper, I don't think such workaround is called for.

This patch is strictly rename only and doesn't introduce any
functional difference.

- mic / gpio renames were missing.  Spotted by kbuild test robot.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Neil Brown <neilb@suse.de>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Ashutosh Dixit <ashutosh.dixit@intel.com>
Cc: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 61 insertions, 61 deletions

diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index a67d1c6..be1cc39 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -22,15 +22,15 @@
 #include "../kernfs/kernfs-internal.h"
 
 /*
- * Determine ktype->sysfs_ops for the given sysfs_dirent.  This function
+ * Determine ktype->sysfs_ops for the given kernfs_node.  This function
  * must be called while holding an active reference.
  */
-static const struct sysfs_ops *sysfs_file_ops(struct sysfs_dirent *sd)
+static const struct sysfs_ops *sysfs_file_ops(struct kernfs_node *kn)
 {
-	struct kobject *kobj = sd->s_parent->priv;
+	struct kobject *kobj = kn->s_parent->priv;
 
-	if (sd->s_flags & SYSFS_FLAG_LOCKDEP)
-		lockdep_assert_held(sd);
+	if (kn->s_flags & SYSFS_FLAG_LOCKDEP)
+		lockdep_assert_held(kn);
 	return kobj->ktype ? kobj->ktype->sysfs_ops : NULL;
 }
 
@@ -42,8 +42,8 @@ static const struct sysfs_ops *sysfs_file_ops(struct sysfs_dirent *sd)
 static int sysfs_kf_seq_show(struct seq_file *sf, void *v)
 {
 	struct sysfs_open_file *of = sf->private;
-	struct kobject *kobj = of->sd->s_parent->priv;
-	const struct sysfs_ops *ops = sysfs_file_ops(of->sd);
+	struct kobject *kobj = of->kn->s_parent->priv;
+	const struct sysfs_ops *ops = sysfs_file_ops(of->kn);
 	ssize_t count;
 	char *buf;
 
@@ -59,7 +59,7 @@ static int sysfs_kf_seq_show(struct seq_file *sf, void *v)
 	 * if @ops->show() isn't implemented.
 	 */
 	if (ops->show) {
-		count = ops->show(kobj, of->sd->priv, buf);
+		count = ops->show(kobj, of->kn->priv, buf);
 		if (count < 0)
 			return count;
 	}
@@ -81,8 +81,8 @@ static int sysfs_kf_seq_show(struct seq_file *sf, void *v)
 static ssize_t sysfs_kf_bin_read(struct sysfs_open_file *of, char *buf,
 				 size_t count, loff_t pos)
 {
-	struct bin_attribute *battr = of->sd->priv;
-	struct kobject *kobj = of->sd->s_parent->priv;
+	struct bin_attribute *battr = of->kn->priv;
+	struct kobject *kobj = of->kn->s_parent->priv;
 	loff_t size = file_inode(of->file)->i_size;
 
 	if (!count)
@@ -105,21 +105,21 @@ static ssize_t sysfs_kf_bin_read(struct sysfs_open_file *of, char *buf,
 static ssize_t sysfs_kf_write(struct sysfs_open_file *of, char *buf,
 			      size_t count, loff_t pos)
 {
-	const struct sysfs_ops *ops = sysfs_file_ops(of->sd);
-	struct kobject *kobj = of->sd->s_parent->priv;
+	const struct sysfs_ops *ops = sysfs_file_ops(of->kn);
+	struct kobject *kobj = of->kn->s_parent->priv;
 
 	if (!count)
 		return 0;
 
-	return ops->store(kobj, of->sd->priv, buf, count);
+	return ops->store(kobj, of->kn->priv, buf, count);
 }
 
 /* kernfs write callback for bin sysfs files */
 static ssize_t sysfs_kf_bin_write(struct sysfs_open_file *of, char *buf,
 				  size_t count, loff_t pos)
 {
-	struct bin_attribute *battr = of->sd->priv;
-	struct kobject *kobj = of->sd->s_parent->priv;
+	struct bin_attribute *battr = of->kn->priv;
+	struct kobject *kobj = of->kn->s_parent->priv;
 	loff_t size = file_inode(of->file)->i_size;
 
 	if (size) {
@@ -139,30 +139,30 @@ static ssize_t sysfs_kf_bin_write(struct sysfs_open_file *of, char *buf,
 static int sysfs_kf_bin_mmap(struct sysfs_open_file *of,
 			     struct vm_area_struct *vma)
 {
-	struct bin_attribute *battr = of->sd->priv;
-	struct kobject *kobj = of->sd->s_parent->priv;
+	struct bin_attribute *battr = of->kn->priv;
+	struct kobject *kobj = of->kn->s_parent->priv;
 
 	return battr->mmap(of->file, kobj, battr, vma);
 }
 
-void sysfs_notify(struct kobject *k, const char *dir, const char *attr)
+void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr)
 {
-	struct sysfs_dirent *sd = k->sd, *tmp;
+	struct kernfs_node *kn = kobj->sd, *tmp;
 
-	if (sd && dir)
-		sd = kernfs_find_and_get(sd, dir);
+	if (kn && dir)
+		kn = kernfs_find_and_get(kn, dir);
 	else
-		kernfs_get(sd);
+		kernfs_get(kn);
 
-	if (sd && attr) {
-		tmp = kernfs_find_and_get(sd, attr);
-		kernfs_put(sd);
-		sd = tmp;
+	if (kn && attr) {
+		tmp = kernfs_find_and_get(kn, attr);
+		kernfs_put(kn);
+		kn = tmp;
 	}
 
-	if (sd) {
-		kernfs_notify(sd);
-		kernfs_put(sd);
+	if (kn) {
+		kernfs_notify(kn);
+		kernfs_put(kn);
 	}
 }
 EXPORT_SYMBOL_GPL(sysfs_notify);
@@ -202,17 +202,17 @@ static const struct kernfs_ops sysfs_bin_kfops_mmap = {
 	.mmap		= sysfs_kf_bin_mmap,
 };
 
-int sysfs_add_file_mode_ns(struct sysfs_dirent *dir_sd,
+int sysfs_add_file_mode_ns(struct kernfs_node *parent,
 			   const struct attribute *attr, bool is_bin,
 			   umode_t mode, const void *ns)
 {
 	struct lock_class_key *key = NULL;
 	const struct kernfs_ops *ops;
-	struct sysfs_dirent *sd;
+	struct kernfs_node *kn;
 	loff_t size;
 
 	if (!is_bin) {
-		struct kobject *kobj = dir_sd->priv;
+		struct kobject *kobj = parent->priv;
 		const struct sysfs_ops *sysfs_ops = kobj->ktype->sysfs_ops;
 
 		/* every kobject with an attribute needs a ktype assigned */
@@ -252,20 +252,20 @@ int sysfs_add_file_mode_ns(struct sysfs_dirent *dir_sd,
 	if (!attr->ignore_lockdep)
 		key = attr->key ?: (struct lock_class_key *)&attr->skey;
 #endif
-	sd = kernfs_create_file_ns_key(dir_sd, attr->name, mode, size,
+	kn = kernfs_create_file_ns_key(parent, attr->name, mode, size,
 				       ops, (void *)attr, ns, key);
-	if (IS_ERR(sd)) {
-		if (PTR_ERR(sd) == -EEXIST)
-			sysfs_warn_dup(dir_sd, attr->name);
-		return PTR_ERR(sd);
+	if (IS_ERR(kn)) {
+		if (PTR_ERR(kn) == -EEXIST)
+			sysfs_warn_dup(parent, attr->name);
+		return PTR_ERR(kn);
 	}
 	return 0;
 }
 
-int sysfs_add_file(struct sysfs_dirent *dir_sd, const struct attribute *attr,
+int sysfs_add_file(struct kernfs_node *parent, const struct attribute *attr,
 		   bool is_bin)
 {
-	return sysfs_add_file_mode_ns(dir_sd, attr, is_bin, attr->mode, NULL);
+	return sysfs_add_file_mode_ns(parent, attr, is_bin, attr->mode, NULL);
 }
 
 /**
@@ -307,21 +307,21 @@ EXPORT_SYMBOL_GPL(sysfs_create_files);
 int sysfs_add_file_to_group(struct kobject *kobj,
 		const struct attribute *attr, const char *group)
 {
-	struct sysfs_dirent *dir_sd;
+	struct kernfs_node *parent;
 	int error;
 
 	if (group) {
-		dir_sd = kernfs_find_and_get(kobj->sd, group);
+		parent = kernfs_find_and_get(kobj->sd, group);
 	} else {
-		dir_sd = kobj->sd;
-		kernfs_get(dir_sd);
+		parent = kobj->sd;
+		kernfs_get(parent);
 	}
 
-	if (!dir_sd)
+	if (!parent)
 		return -ENOENT;
 
-	error = sysfs_add_file(dir_sd, attr, false);
-	kernfs_put(dir_sd);
+	error = sysfs_add_file(parent, attr, false);
+	kernfs_put(parent);
 
 	return error;
 }
@@ -337,20 +337,20 @@ EXPORT_SYMBOL_GPL(sysfs_add_file_to_group);
 int sysfs_chmod_file(struct kobject *kobj, const struct attribute *attr,
 		     umode_t mode)
 {
-	struct sysfs_dirent *sd;
+	struct kernfs_node *kn;
 	struct iattr newattrs;
 	int rc;
 
-	sd = kernfs_find_and_get(kobj->sd, attr->name);
-	if (!sd)
+	kn = kernfs_find_and_get(kobj->sd, attr->name);
+	if (!kn)
 		return -ENOENT;
 
-	newattrs.ia_mode = (mode & S_IALLUGO) | (sd->s_mode & ~S_IALLUGO);
+	newattrs.ia_mode = (mode & S_IALLUGO) | (kn->s_mode & ~S_IALLUGO);
 	newattrs.ia_valid = ATTR_MODE;
 
-	rc = kernfs_setattr(sd, &newattrs);
+	rc = kernfs_setattr(kn, &newattrs);
 
-	kernfs_put(sd);
+	kernfs_put(kn);
 	return rc;
 }
 EXPORT_SYMBOL_GPL(sysfs_chmod_file);
@@ -366,9 +366,9 @@ EXPORT_SYMBOL_GPL(sysfs_chmod_file);
 void sysfs_remove_file_ns(struct kobject *kobj, const struct attribute *attr,
 			  const void *ns)
 {
-	struct sysfs_dirent *dir_sd = kobj->sd;
+	struct kernfs_node *parent = kobj->sd;
 
-	kernfs_remove_by_name_ns(dir_sd, attr->name, ns);
+	kernfs_remove_by_name_ns(parent, attr->name, ns);
 }
 EXPORT_SYMBOL_GPL(sysfs_remove_file_ns);
 
@@ -389,18 +389,18 @@ EXPORT_SYMBOL_GPL(sysfs_remove_files);
 void sysfs_remove_file_from_group(struct kobject *kobj,
 		const struct attribute *attr, const char *group)
 {
-	struct sysfs_dirent *dir_sd;
+	struct kernfs_node *parent;
 
 	if (group) {
-		dir_sd = kernfs_find_and_get(kobj->sd, group);
+		parent = kernfs_find_and_get(kobj->sd, group);
 	} else {
-		dir_sd = kobj->sd;
-		kernfs_get(dir_sd);
+		parent = kobj->sd;
+		kernfs_get(parent);
 	}
 
-	if (dir_sd) {
-		kernfs_remove_by_name(dir_sd, attr->name);
-		kernfs_put(dir_sd);
+	if (parent) {
+		kernfs_remove_by_name(parent, attr->name);
+		kernfs_put(parent);
 	}
 }
 EXPORT_SYMBOL_GPL(sysfs_remove_file_from_group);