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, 32 insertions, 32 deletions

diff --git a/fs/kernfs/symlink.c b/fs/kernfs/symlink.c
index adf28755b0ee..29dcf5e8debd 100644
--- a/fs/kernfs/symlink.c
+++ b/fs/kernfs/symlink.c
@@ -22,50 +22,50 @@
  *
  * Returns the created node on success, ERR_PTR() value on error.
  */
-struct sysfs_dirent *kernfs_create_link(struct sysfs_dirent *parent,
-					const char *name,
-					struct sysfs_dirent *target)
+struct kernfs_node *kernfs_create_link(struct kernfs_node *parent,
+				       const char *name,
+				       struct kernfs_node *target)
 {
-	struct sysfs_dirent *sd;
+	struct kernfs_node *kn;
 	struct sysfs_addrm_cxt acxt;
 	int error;
 
-	sd = sysfs_new_dirent(kernfs_root(parent), name, S_IFLNK|S_IRWXUGO,
+	kn = sysfs_new_dirent(kernfs_root(parent), name, S_IFLNK|S_IRWXUGO,
 			      SYSFS_KOBJ_LINK);
-	if (!sd)
+	if (!kn)
 		return ERR_PTR(-ENOMEM);
 
 	if (kernfs_ns_enabled(parent))
-		sd->s_ns = target->s_ns;
-	sd->s_symlink.target_sd = target;
+		kn->s_ns = target->s_ns;
+	kn->s_symlink.target_kn = target;
 	kernfs_get(target);	/* ref owned by symlink */
 
 	sysfs_addrm_start(&acxt);
-	error = sysfs_add_one(&acxt, sd, parent);
+	error = sysfs_add_one(&acxt, kn, parent);
 	sysfs_addrm_finish(&acxt);
 
 	if (!error)
-		return sd;
+		return kn;
 
-	kernfs_put(sd);
+	kernfs_put(kn);
 	return ERR_PTR(error);
 }
 
-static int sysfs_get_target_path(struct sysfs_dirent *parent_sd,
-				 struct sysfs_dirent *target_sd, char *path)
+static int sysfs_get_target_path(struct kernfs_node *parent,
+				 struct kernfs_node *target, char *path)
 {
-	struct sysfs_dirent *base, *sd;
+	struct kernfs_node *base, *kn;
 	char *s = path;
 	int len = 0;
 
 	/* go up to the root, stop at the base */
-	base = parent_sd;
+	base = parent;
 	while (base->s_parent) {
-		sd = target_sd->s_parent;
-		while (sd->s_parent && base != sd)
-			sd = sd->s_parent;
+		kn = target->s_parent;
+		while (kn->s_parent && base != kn)
+			kn = kn->s_parent;
 
-		if (base == sd)
+		if (base == kn)
 			break;
 
 		strcpy(s, "../");
@@ -74,10 +74,10 @@ static int sysfs_get_target_path(struct sysfs_dirent *parent_sd,
 	}
 
 	/* determine end of target string for reverse fillup */
-	sd = target_sd;
-	while (sd->s_parent && sd != base) {
-		len += strlen(sd->s_name) + 1;
-		sd = sd->s_parent;
+	kn = target;
+	while (kn->s_parent && kn != base) {
+		len += strlen(kn->s_name) + 1;
+		kn = kn->s_parent;
 	}
 
 	/* check limits */
@@ -88,16 +88,16 @@ static int sysfs_get_target_path(struct sysfs_dirent *parent_sd,
 		return -ENAMETOOLONG;
 
 	/* reverse fillup of target string from target to base */
-	sd = target_sd;
-	while (sd->s_parent && sd != base) {
-		int slen = strlen(sd->s_name);
+	kn = target;
+	while (kn->s_parent && kn != base) {
+		int slen = strlen(kn->s_name);
 
 		len -= slen;
-		strncpy(s + len, sd->s_name, slen);
+		strncpy(s + len, kn->s_name, slen);
 		if (len)
 			s[--len] = '/';
 
-		sd = sd->s_parent;
+		kn = kn->s_parent;
 	}
 
 	return 0;
@@ -105,13 +105,13 @@ static int sysfs_get_target_path(struct sysfs_dirent *parent_sd,
 
 static int sysfs_getlink(struct dentry *dentry, char *path)
 {
-	struct sysfs_dirent *sd = dentry->d_fsdata;
-	struct sysfs_dirent *parent_sd = sd->s_parent;
-	struct sysfs_dirent *target_sd = sd->s_symlink.target_sd;
+	struct kernfs_node *kn = dentry->d_fsdata;
+	struct kernfs_node *parent = kn->s_parent;
+	struct kernfs_node *target = kn->s_symlink.target_kn;
 	int error;
 
 	mutex_lock(&sysfs_mutex);
-	error = sysfs_get_target_path(parent_sd, target_sd, path);
+	error = sysfs_get_target_path(parent, target, path);
 	mutex_unlock(&sysfs_mutex);
 
 	return error;