kernfs: drop s_ prefix from kernfs_node members

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.

s_ prefix for kernfs members is used inconsistently and a misnomer
now.  It's not like kernfs_node is used widely across the kernel
making the ability to grep for the members particularly useful.  Let's
just drop the prefix.

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

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 @@
 {
 	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 @@
 		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 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 @@
 	}
 
 	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 @@
 	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 @@
 		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 *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);