7 files changed, 500 insertions, 260 deletions

diff --git a/arch/s390/hypfs/Makefile b/arch/s390/hypfs/Makefile
index b08d2abf617..06f8d95a16c 100644
--- a/arch/s390/hypfs/Makefile
+++ b/arch/s390/hypfs/Makefile
@@ -4,4 +4,4 @@
 
 obj-$(CONFIG_S390_HYPFS_FS) += s390_hypfs.o
 
-s390_hypfs-objs := inode.o hypfs_diag.o hypfs_vm.o
+s390_hypfs-objs := inode.o hypfs_diag.o hypfs_vm.o hypfs_dbfs.o hypfs_sprp.o
diff --git a/arch/s390/hypfs/hypfs.h b/arch/s390/hypfs/hypfs.h
index fa487d4cc08..b34b5ab90a3 100644
--- a/arch/s390/hypfs/hypfs.h
+++ b/arch/s390/hypfs/hypfs.h
@@ -1,8 +1,7 @@
 /*
- *  arch/s390/hypfs/hypfs.h
  *    Hypervisor filesystem for Linux on s390.
  *
- *    Copyright (C) IBM Corp. 2006
+ *    Copyright IBM Corp. 2006
  *    Author(s): Michael Holzheu <holzheu@de.ibm.com>
  */
 
@@ -12,32 +11,65 @@
 #include <linux/fs.h>
 #include <linux/types.h>
 #include <linux/debugfs.h>
+#include <linux/workqueue.h>
+#include <linux/kref.h>
+#include <asm/hypfs.h>
 
 #define REG_FILE_MODE    0440
 #define UPDATE_FILE_MODE 0220
 #define DIR_MODE         0550
 
-extern struct dentry *hypfs_mkdir(struct super_block *sb, struct dentry *parent,
-				  const char *name);
+extern struct dentry *hypfs_mkdir(struct dentry *parent, const char *name);
 
-extern struct dentry *hypfs_create_u64(struct super_block *sb,
-				       struct dentry *dir, const char *name,
+extern struct dentry *hypfs_create_u64(struct dentry *dir, const char *name,
 				       __u64 value);
 
-extern struct dentry *hypfs_create_str(struct super_block *sb,
-				       struct dentry *dir, const char *name,
+extern struct dentry *hypfs_create_str(struct dentry *dir, const char *name,
 				       char *string);
 
 /* LPAR Hypervisor */
 extern int hypfs_diag_init(void);
 extern void hypfs_diag_exit(void);
-extern int hypfs_diag_create_files(struct super_block *sb, struct dentry *root);
+extern int hypfs_diag_create_files(struct dentry *root);
 
 /* VM Hypervisor */
 extern int hypfs_vm_init(void);
 extern void hypfs_vm_exit(void);
-extern int hypfs_vm_create_files(struct super_block *sb, struct dentry *root);
+extern int hypfs_vm_create_files(struct dentry *root);
+
+/* Set Partition-Resource Parameter */
+int hypfs_sprp_init(void);
+void hypfs_sprp_exit(void);
+
+/* debugfs interface */
+struct hypfs_dbfs_file;
+
+struct hypfs_dbfs_data {
+	void			*buf;
+	void			*buf_free_ptr;
+	size_t			size;
+	struct hypfs_dbfs_file	*dbfs_file;
+	struct kref		kref;
+};
+
+struct hypfs_dbfs_file {
+	const char	*name;
+	int		(*data_create)(void **data, void **data_free_ptr,
+				       size_t *size);
+	void		(*data_free)(const void *buf_free_ptr);
+	long		(*unlocked_ioctl) (struct file *, unsigned int,
+					   unsigned long);
+
+	/* Private data for hypfs_dbfs.c */
+	struct hypfs_dbfs_data	*data;
+	struct delayed_work	data_free_work;
+	struct mutex		lock;
+	struct dentry		*dentry;
+};
+
+extern int hypfs_dbfs_init(void);
+extern void hypfs_dbfs_exit(void);
+extern int hypfs_dbfs_create_file(struct hypfs_dbfs_file *df);
+extern void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df);
 
-/* Directory for debugfs files */
-extern struct dentry *hypfs_dbfs_dir;
 #endif /* _HYPFS_H_ */
diff --git a/arch/s390/hypfs/hypfs_dbfs.c b/arch/s390/hypfs/hypfs_dbfs.c
new file mode 100644
index 00000000000..2badf2bf9cd
--- /dev/null
+++ b/arch/s390/hypfs/hypfs_dbfs.c
@@ -0,0 +1,130 @@
+/*
+ * Hypervisor filesystem for Linux on s390 - debugfs interface
+ *
+ * Copyright IBM Corp. 2010
+ * Author(s): Michael Holzheu <holzheu@linux.vnet.ibm.com>
+ */
+
+#include <linux/slab.h>
+#include "hypfs.h"
+
+static struct dentry *dbfs_dir;
+
+static struct hypfs_dbfs_data *hypfs_dbfs_data_alloc(struct hypfs_dbfs_file *f)
+{
+	struct hypfs_dbfs_data *data;
+
+	data = kmalloc(sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return NULL;
+	kref_init(&data->kref);
+	data->dbfs_file = f;
+	return data;
+}
+
+static void hypfs_dbfs_data_free(struct kref *kref)
+{
+	struct hypfs_dbfs_data *data;
+
+	data = container_of(kref, struct hypfs_dbfs_data, kref);
+	data->dbfs_file->data_free(data->buf_free_ptr);
+	kfree(data);
+}
+
+static void data_free_delayed(struct work_struct *work)
+{
+	struct hypfs_dbfs_data *data;
+	struct hypfs_dbfs_file *df;
+
+	df = container_of(work, struct hypfs_dbfs_file, data_free_work.work);
+	mutex_lock(&df->lock);
+	data = df->data;
+	df->data = NULL;
+	mutex_unlock(&df->lock);
+	kref_put(&data->kref, hypfs_dbfs_data_free);
+}
+
+static ssize_t dbfs_read(struct file *file, char __user *buf,
+			 size_t size, loff_t *ppos)
+{
+	struct hypfs_dbfs_data *data;
+	struct hypfs_dbfs_file *df;
+	ssize_t rc;
+
+	if (*ppos != 0)
+		return 0;
+
+	df = file_inode(file)->i_private;
+	mutex_lock(&df->lock);
+	if (!df->data) {
+		data = hypfs_dbfs_data_alloc(df);
+		if (!data) {
+			mutex_unlock(&df->lock);
+			return -ENOMEM;
+		}
+		rc = df->data_create(&data->buf, &data->buf_free_ptr,
+				     &data->size);
+		if (rc) {
+			mutex_unlock(&df->lock);
+			kfree(data);
+			return rc;
+		}
+		df->data = data;
+		schedule_delayed_work(&df->data_free_work, HZ);
+	}
+	data = df->data;
+	kref_get(&data->kref);
+	mutex_unlock(&df->lock);
+
+	rc = simple_read_from_buffer(buf, size, ppos, data->buf, data->size);
+	kref_put(&data->kref, hypfs_dbfs_data_free);
+	return rc;
+}
+
+static long dbfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct hypfs_dbfs_file *df;
+	long rc;
+
+	df = file->f_path.dentry->d_inode->i_private;
+	mutex_lock(&df->lock);
+	if (df->unlocked_ioctl)
+		rc = df->unlocked_ioctl(file, cmd, arg);
+	else
+		rc = -ENOTTY;
+	mutex_unlock(&df->lock);
+	return rc;
+}
+
+static const struct file_operations dbfs_ops = {
+	.read		= dbfs_read,
+	.llseek		= no_llseek,
+	.unlocked_ioctl = dbfs_ioctl,
+};
+
+int hypfs_dbfs_create_file(struct hypfs_dbfs_file *df)
+{
+	df->dentry = debugfs_create_file(df->name, 0400, dbfs_dir, df,
+					 &dbfs_ops);
+	if (IS_ERR(df->dentry))
+		return PTR_ERR(df->dentry);
+	mutex_init(&df->lock);
+	INIT_DELAYED_WORK(&df->data_free_work, data_free_delayed);
+	return 0;
+}
+
+void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df)
+{
+	debugfs_remove(df->dentry);
+}
+
+int hypfs_dbfs_init(void)
+{
+	dbfs_dir = debugfs_create_dir("s390_hypfs", NULL);
+	return PTR_ERR_OR_ZERO(dbfs_dir);
+}
+
+void hypfs_dbfs_exit(void)
+{
+	debugfs_remove(dbfs_dir);
+}
diff --git a/arch/s390/hypfs/hypfs_diag.c b/arch/s390/hypfs/hypfs_diag.c
index 1211bb1d2f2..5eeffeefae0 100644
--- a/arch/s390/hypfs/hypfs_diag.c
+++ b/arch/s390/hypfs/hypfs_diag.c
@@ -1,5 +1,4 @@
 /*
- *  arch/s390/hypfs/hypfs_diag.c
  *    Hypervisor filesystem for Linux on s390. Diag 204 and 224
  *    implementation.
  *
@@ -555,80 +554,37 @@ struct dbfs_d204 {
 	char			buf[];	/* d204 buffer */
 } __attribute__ ((packed));
 
-struct dbfs_d204_private {
-	struct dbfs_d204	*d204;	/* Aligned d204 data with header */
-	void			*base;	/* Base pointer (needed for vfree) */
-};
-
-static int dbfs_d204_open(struct inode *inode, struct file *file)
+static int dbfs_d204_create(void **data, void **data_free_ptr, size_t *size)
 {
-	struct dbfs_d204_private *data;
 	struct dbfs_d204 *d204;
 	int rc, buf_size;
+	void *base;
 
-	data = kzalloc(sizeof(*data), GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
 	buf_size = PAGE_SIZE * (diag204_buf_pages + 1) + sizeof(d204->hdr);
-	data->base = vmalloc(buf_size);
-	if (!data->base) {
-		rc = -ENOMEM;
-		goto fail_kfree_data;
+	base = vzalloc(buf_size);
+	if (!base)
+		return -ENOMEM;
+	d204 = page_align_ptr(base + sizeof(d204->hdr)) - sizeof(d204->hdr);
+	rc = diag204_do_store(d204->buf, diag204_buf_pages);
+	if (rc) {
+		vfree(base);
+		return rc;
 	}
-	memset(data->base, 0, buf_size);
-	d204 = page_align_ptr(data->base + sizeof(d204->hdr))
-		- sizeof(d204->hdr);
-	rc = diag204_do_store(&d204->buf, diag204_buf_pages);
-	if (rc)
-		goto fail_vfree_base;
 	d204->hdr.version = DBFS_D204_HDR_VERSION;
 	d204->hdr.len = PAGE_SIZE * diag204_buf_pages;
 	d204->hdr.sc = diag204_store_sc;
-	data->d204 = d204;
-	file->private_data = data;
-	return nonseekable_open(inode, file);
-
-fail_vfree_base:
-	vfree(data->base);
-fail_kfree_data:
-	kfree(data);
-	return rc;
-}
-
-static int dbfs_d204_release(struct inode *inode, struct file *file)
-{
-	struct dbfs_d204_private *data = file->private_data;
-
-	vfree(data->base);
-	kfree(data);
+	*data = d204;
+	*data_free_ptr = base;
+	*size = d204->hdr.len + sizeof(struct dbfs_d204_hdr);
 	return 0;
 }
 
-static ssize_t dbfs_d204_read(struct file *file, char __user *buf,
-			      size_t size, loff_t *ppos)
-{
-	struct dbfs_d204_private *data = file->private_data;
-
-	return simple_read_from_buffer(buf, size, ppos, data->d204,
-				       data->d204->hdr.len +
-				       sizeof(data->d204->hdr));
-}
-
-static const struct file_operations dbfs_d204_ops = {
-	.open		= dbfs_d204_open,
-	.read		= dbfs_d204_read,
-	.release	= dbfs_d204_release,
+static struct hypfs_dbfs_file dbfs_file_d204 = {
+	.name		= "diag_204",
+	.data_create	= dbfs_d204_create,
+	.data_free	= vfree,
 };
 
-static int hypfs_dbfs_init(void)
-{
-	dbfs_d204_file = debugfs_create_file("diag_204", 0400, hypfs_dbfs_dir,
-					     NULL, &dbfs_d204_ops);
-	if (IS_ERR(dbfs_d204_file))
-		return PTR_ERR(dbfs_d204_file);
-	return 0;
-}
-
 __init int hypfs_diag_init(void)
 {
 	int rc;
@@ -637,18 +593,21 @@ __init int hypfs_diag_init(void)
 		pr_err("The hardware system does not support hypfs\n");
 		return -ENODATA;
 	}
-	rc = diag224_get_name_table();
-	if (rc) {
-		diag204_free_buffer();
-		pr_err("The hardware system does not provide all "
-		       "functions required by hypfs\n");
-	}
 	if (diag204_info_type == INFO_EXT) {
-		rc = hypfs_dbfs_init();
+		rc = hypfs_dbfs_create_file(&dbfs_file_d204);
 		if (rc)
-			diag204_free_buffer();
+			return rc;
 	}
-	return rc;
+	if (MACHINE_IS_LPAR) {
+		rc = diag224_get_name_table();
+		if (rc) {
+			pr_err("The hardware system does not provide all "
+			       "functions required by hypfs\n");
+			debugfs_remove(dbfs_d204_file);
+			return rc;
+		}
+	}
+	return 0;
 }
 
 void hypfs_diag_exit(void)
@@ -656,6 +615,7 @@ void hypfs_diag_exit(void)
 	debugfs_remove(dbfs_d204_file);
 	diag224_delete_name_table();
 	diag204_free_buffer();
+	hypfs_dbfs_remove_file(&dbfs_file_d204);
 }
 
 /*
@@ -663,8 +623,7 @@ void hypfs_diag_exit(void)
  * *******************************************
  */
 
-static int hypfs_create_cpu_files(struct super_block *sb,
-				  struct dentry *cpus_dir, void *cpu_info)
+static int hypfs_create_cpu_files(struct dentry *cpus_dir, void *cpu_info)
 {
 	struct dentry *cpu_dir;
 	char buffer[TMP_SIZE];
@@ -672,32 +631,29 @@ static int hypfs_create_cpu_files(struct super_block *sb,
 
 	snprintf(buffer, TMP_SIZE, "%d", cpu_info__cpu_addr(diag204_info_type,
 							    cpu_info));
-	cpu_dir = hypfs_mkdir(sb, cpus_dir, buffer);
-	rc = hypfs_create_u64(sb, cpu_dir, "mgmtime",
+	cpu_dir = hypfs_mkdir(cpus_dir, buffer);
+	rc = hypfs_create_u64(cpu_dir, "mgmtime",
 			      cpu_info__acc_time(diag204_info_type, cpu_info) -
 			      cpu_info__lp_time(diag204_info_type, cpu_info));
 	if (IS_ERR(rc))
 		return PTR_ERR(rc);
-	rc = hypfs_create_u64(sb, cpu_dir, "cputime",
+	rc = hypfs_create_u64(cpu_dir, "cputime",
 			      cpu_info__lp_time(diag204_info_type, cpu_info));
 	if (IS_ERR(rc))
 		return PTR_ERR(rc);
 	if (diag204_info_type == INFO_EXT) {
-		rc = hypfs_create_u64(sb, cpu_dir, "onlinetime",
+		rc = hypfs_create_u64(cpu_dir, "onlinetime",
 				      cpu_info__online_time(diag204_info_type,
 							    cpu_info));
 		if (IS_ERR(rc))
 			return PTR_ERR(rc);
 	}
 	diag224_idx2name(cpu_info__ctidx(diag204_info_type, cpu_info), buffer);
-	rc = hypfs_create_str(sb, cpu_dir, "type", buffer);
-	if (IS_ERR(rc))
-		return PTR_ERR(rc);
-	return 0;
+	rc = hypfs_create_str(cpu_dir, "type", buffer);
+	return PTR_RET(rc);
 }
 
-static void *hypfs_create_lpar_files(struct super_block *sb,
-				     struct dentry *systems_dir, void *part_hdr)
+static void *hypfs_create_lpar_files(struct dentry *systems_dir, void *part_hdr)
 {
 	struct dentry *cpus_dir;
 	struct dentry *lpar_dir;
@@ -707,16 +663,16 @@ static void *hypfs_create_lpar_files(struct super_block *sb,
 
 	part_hdr__part_name(diag204_info_type, part_hdr, lpar_name);
 	lpar_name[LPAR_NAME_LEN] = 0;
-	lpar_dir = hypfs_mkdir(sb, systems_dir, lpar_name);
+	lpar_dir = hypfs_mkdir(systems_dir, lpar_name);
 	if (IS_ERR(lpar_dir))
 		return lpar_dir;
-	cpus_dir = hypfs_mkdir(sb, lpar_dir, "cpus");
+	cpus_dir = hypfs_mkdir(lpar_dir, "cpus");
 	if (IS_ERR(cpus_dir))
 		return cpus_dir;
 	cpu_info = part_hdr + part_hdr__size(diag204_info_type);
 	for (i = 0; i < part_hdr__rcpus(diag204_info_type, part_hdr); i++) {
 		int rc;
-		rc = hypfs_create_cpu_files(sb, cpus_dir, cpu_info);
+		rc = hypfs_create_cpu_files(cpus_dir, cpu_info);
 		if (rc)
 			return ERR_PTR(rc);
 		cpu_info += cpu_info__size(diag204_info_type);
@@ -724,8 +680,7 @@ static void *hypfs_create_lpar_files(struct super_block *sb,
 	return cpu_info;
 }
 
-static int hypfs_create_phys_cpu_files(struct super_block *sb,
-				       struct dentry *cpus_dir, void *cpu_info)
+static int hypfs_create_phys_cpu_files(struct dentry *cpus_dir, void *cpu_info)
 {
 	struct dentry *cpu_dir;
 	char buffer[TMP_SIZE];
@@ -733,34 +688,31 @@ static int hypfs_create_phys_cpu_files(struct super_block *sb,
 
 	snprintf(buffer, TMP_SIZE, "%i", phys_cpu__cpu_addr(diag204_info_type,
 							    cpu_info));
-	cpu_dir = hypfs_mkdir(sb, cpus_dir, buffer);
+	cpu_dir = hypfs_mkdir(cpus_dir, buffer);
 	if (IS_ERR(cpu_dir))
 		return PTR_ERR(cpu_dir);
-	rc = hypfs_create_u64(sb, cpu_dir, "mgmtime",
+	rc = hypfs_create_u64(cpu_dir, "mgmtime",
 			      phys_cpu__mgm_time(diag204_info_type, cpu_info));
 	if (IS_ERR(rc))
 		return PTR_ERR(rc);
 	diag224_idx2name(phys_cpu__ctidx(diag204_info_type, cpu_info), buffer);
-	rc = hypfs_create_str(sb, cpu_dir, "type", buffer);
-	if (IS_ERR(rc))
-		return PTR_ERR(rc);
-	return 0;
+	rc = hypfs_create_str(cpu_dir, "type", buffer);
+	return PTR_RET(rc);
 }
 
-static void *hypfs_create_phys_files(struct super_block *sb,
-				     struct dentry *parent_dir, void *phys_hdr)
+static void *hypfs_create_phys_files(struct dentry *parent_dir, void *phys_hdr)
 {
 	int i;
 	void *cpu_info;
 	struct dentry *cpus_dir;
 
-	cpus_dir = hypfs_mkdir(sb, parent_dir, "cpus");
+	cpus_dir = hypfs_mkdir(parent_dir, "cpus");
 	if (IS_ERR(cpus_dir))
 		return cpus_dir;
 	cpu_info = phys_hdr + phys_hdr__size(diag204_info_type);
 	for (i = 0; i < phys_hdr__cpus(diag204_info_type, phys_hdr); i++) {
 		int rc;
-		rc = hypfs_create_phys_cpu_files(sb, cpus_dir, cpu_info);
+		rc = hypfs_create_phys_cpu_files(cpus_dir, cpu_info);
 		if (rc)
 			return ERR_PTR(rc);
 		cpu_info += phys_cpu__size(diag204_info_type);
@@ -768,7 +720,7 @@ static void *hypfs_create_phys_files(struct super_block *sb,
 	return cpu_info;
 }
 
-int hypfs_diag_create_files(struct super_block *sb, struct dentry *root)
+int hypfs_diag_create_files(struct dentry *root)
 {
 	struct dentry *systems_dir, *hyp_dir;
 	void *time_hdr, *part_hdr;
@@ -779,7 +731,7 @@ int hypfs_diag_create_files(struct super_block *sb, struct dentry *root)
 	if (IS_ERR(buffer))
 		return PTR_ERR(buffer);
 
-	systems_dir = hypfs_mkdir(sb, root, "systems");
+	systems_dir = hypfs_mkdir(root, "systems");
 	if (IS_ERR(systems_dir)) {
 		rc = PTR_ERR(systems_dir);
 		goto err_out;
@@ -787,25 +739,25 @@ int hypfs_diag_create_files(struct super_block *sb, struct dentry *root)
 	time_hdr = (struct x_info_blk_hdr *)buffer;
 	part_hdr = time_hdr + info_blk_hdr__size(diag204_info_type);
 	for (i = 0; i < info_blk_hdr__npar(diag204_info_type, time_hdr); i++) {
-		part_hdr = hypfs_create_lpar_files(sb, systems_dir, part_hdr);
+		part_hdr = hypfs_create_lpar_files(systems_dir, part_hdr);
 		if (IS_ERR(part_hdr)) {
 			rc = PTR_ERR(part_hdr);
 			goto err_out;
 		}
 	}
 	if (info_blk_hdr__flags(diag204_info_type, time_hdr) & LPAR_PHYS_FLG) {
-		ptr = hypfs_create_phys_files(sb, root, part_hdr);
+		ptr = hypfs_create_phys_files(root, part_hdr);
 		if (IS_ERR(ptr)) {
 			rc = PTR_ERR(ptr);
 			goto err_out;
 		}
 	}
-	hyp_dir = hypfs_mkdir(sb, root, "hyp");
+	hyp_dir = hypfs_mkdir(root, "hyp");
 	if (IS_ERR(hyp_dir)) {
 		rc = PTR_ERR(hyp_dir);
 		goto err_out;
 	}
-	ptr = hypfs_create_str(sb, hyp_dir, "type", "LPAR Hypervisor");
+	ptr = hypfs_create_str(hyp_dir, "type", "LPAR Hypervisor");
 	if (IS_ERR(ptr)) {
 		rc = PTR_ERR(ptr);
 		goto err_out;
diff --git a/arch/s390/hypfs/hypfs_sprp.c b/arch/s390/hypfs/hypfs_sprp.c
new file mode 100644
index 00000000000..f043c3c7e73
--- /dev/null
+++ b/arch/s390/hypfs/hypfs_sprp.c
@@ -0,0 +1,141 @@
+/*
+ *    Hypervisor filesystem for Linux on s390.
+ *    Set Partition-Resource Parameter interface.
+ *
+ *    Copyright IBM Corp. 2013
+ *    Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
+ */
+
+#include <linux/compat.h>
+#include <linux/errno.h>
+#include <linux/gfp.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/uaccess.h>
+#include <asm/compat.h>
+#include <asm/sclp.h>
+#include "hypfs.h"
+
+#define DIAG304_SET_WEIGHTS	0
+#define DIAG304_QUERY_PRP	1
+#define DIAG304_SET_CAPPING	2
+
+#define DIAG304_CMD_MAX		2
+
+static unsigned long hypfs_sprp_diag304(void *data, unsigned long cmd)
+{
+	register unsigned long _data asm("2") = (unsigned long) data;
+	register unsigned long _rc asm("3");
+	register unsigned long _cmd asm("4") = cmd;
+
+	asm volatile("diag %1,%2,0x304\n"
+		     : "=d" (_rc) : "d" (_data), "d" (_cmd) : "memory");
+
+	return _rc;
+}
+
+static void hypfs_sprp_free(const void *data)
+{
+	free_page((unsigned long) data);
+}
+
+static int hypfs_sprp_create(void **data_ptr, void **free_ptr, size_t *size)
+{
+	unsigned long rc;
+	void *data;
+
+	data = (void *) get_zeroed_page(GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+	rc = hypfs_sprp_diag304(data, DIAG304_QUERY_PRP);
+	if (rc != 1) {
+		*data_ptr = *free_ptr = NULL;
+		*size = 0;
+		free_page((unsigned long) data);
+		return -EIO;
+	}
+	*data_ptr = *free_ptr = data;
+	*size = PAGE_SIZE;
+	return 0;
+}
+
+static int __hypfs_sprp_ioctl(void __user *user_area)
+{
+	struct hypfs_diag304 diag304;
+	unsigned long cmd;
+	void __user *udata;
+	void *data;
+	int rc;
+
+	if (copy_from_user(&diag304, user_area, sizeof(diag304)))
+		return -EFAULT;
+	if ((diag304.args[0] >> 8) != 0 || diag304.args[1] > DIAG304_CMD_MAX)
+		return -EINVAL;
+
+	data = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
+	if (!data)
+		return -ENOMEM;
+
+	udata = (void __user *)(unsigned long) diag304.data;
+	if (diag304.args[1] == DIAG304_SET_WEIGHTS ||
+	    diag304.args[1] == DIAG304_SET_CAPPING)
+		if (copy_from_user(data, udata, PAGE_SIZE)) {
+			rc = -EFAULT;
+			goto out;
+		}
+
+	cmd = *(unsigned long *) &diag304.args[0];
+	diag304.rc = hypfs_sprp_diag304(data, cmd);
+
+	if (diag304.args[1] == DIAG304_QUERY_PRP)
+		if (copy_to_user(udata, data, PAGE_SIZE)) {
+			rc = -EFAULT;
+			goto out;
+		}
+
+	rc = copy_to_user(user_area, &diag304, sizeof(diag304)) ? -EFAULT : 0;
+out:
+	free_page((unsigned long) data);
+	return rc;
+}
+
+static long hypfs_sprp_ioctl(struct file *file, unsigned int cmd,
+			       unsigned long arg)
+{
+	void __user *argp;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EACCES;
+	if (is_compat_task())
+		argp = compat_ptr(arg);
+	else
+		argp = (void __user *) arg;
+	switch (cmd) {
+	case HYPFS_DIAG304:
+		return __hypfs_sprp_ioctl(argp);
+	default: /* unknown ioctl number */
+		return -ENOTTY;
+	}
+	return 0;
+}
+
+static struct hypfs_dbfs_file hypfs_sprp_file = {
+	.name		= "diag_304",
+	.data_create	= hypfs_sprp_create,
+	.data_free	= hypfs_sprp_free,
+	.unlocked_ioctl = hypfs_sprp_ioctl,
+};
+
+int hypfs_sprp_init(void)
+{
+	if (!sclp_has_sprp())
+		return 0;
+	return hypfs_dbfs_create_file(&hypfs_sprp_file);
+}
+
+void hypfs_sprp_exit(void)
+{
+	if (!sclp_has_sprp())
+		return;
+	hypfs_dbfs_remove_file(&hypfs_sprp_file);
+}
diff --git a/arch/s390/hypfs/hypfs_vm.c b/arch/s390/hypfs/hypfs_vm.c
index ee5ab1a578e..32040ace00e 100644
--- a/arch/s390/hypfs/hypfs_vm.c
+++ b/arch/s390/hypfs/hypfs_vm.c
@@ -1,7 +1,7 @@
 /*
  *    Hypervisor filesystem for Linux on s390. z/VM implementation.
  *
- *    Copyright (C) IBM Corp. 2006
+ *    Copyright IBM Corp. 2006
  *    Author(s): Michael Holzheu <holzheu@de.ibm.com>
  */
 
@@ -20,8 +20,6 @@ static char local_guest[] = "        ";
 static char all_guests[] = "*       ";
 static char *guest_query;
 
-static struct dentry *dbfs_d2fc_file;
-
 struct diag2fc_data {
 	__u32 version;
 	__u32 flags;
@@ -34,7 +32,7 @@ struct diag2fc_data {
 	__u32 pcpus;
 	__u32 lcpus;
 	__u32 vcpus;
-	__u32 cpu_min;
+	__u32 ocpus;
 	__u32 cpu_max;
 	__u32 cpu_shares;
 	__u32 cpu_use_samp;
@@ -104,21 +102,20 @@ static void *diag2fc_store(char *query, unsigned int *count, int offset)
 	return data;
 }
 
-static void diag2fc_free(void *data)
+static void diag2fc_free(const void *data)
 {
 	vfree(data);
 }
 
-#define ATTRIBUTE(sb, dir, name, member) \
+#define ATTRIBUTE(dir, name, member) \
 do { \
 	void *rc; \
-	rc = hypfs_create_u64(sb, dir, name, member); \
+	rc = hypfs_create_u64(dir, name, member); \
 	if (IS_ERR(rc)) \
 		return PTR_ERR(rc); \
 } while(0)
 
-static int hpyfs_vm_create_guest(struct super_block *sb,
-				 struct dentry *systems_dir,
+static int hpyfs_vm_create_guest(struct dentry *systems_dir,
 				 struct diag2fc_data *data)
 {
 	char guest_name[NAME_LEN + 1] = {};
@@ -132,46 +129,51 @@ static int hpyfs_vm_create_guest(struct super_block *sb,
 	memcpy(guest_name, data->guest_name, NAME_LEN);
 	EBCASC(guest_name, NAME_LEN);
 	strim(guest_name);
-	guest_dir = hypfs_mkdir(sb, systems_dir, guest_name);
+	guest_dir = hypfs_mkdir(systems_dir, guest_name);
 	if (IS_ERR(guest_dir))
 		return PTR_ERR(guest_dir);
-	ATTRIBUTE(sb, guest_dir, "onlinetime_us", data->el_time);
+	ATTRIBUTE(guest_dir, "onlinetime_us", data->el_time);
 
 	/* logical cpu information */
-	cpus_dir = hypfs_mkdir(sb, guest_dir, "cpus");
+	cpus_dir = hypfs_mkdir(guest_dir, "cpus");
 	if (IS_ERR(cpus_dir))
 		return PTR_ERR(cpus_dir);
-	ATTRIBUTE(sb, cpus_dir, "cputime_us", data->used_cpu);
-	ATTRIBUTE(sb, cpus_dir, "capped", capped_value);
-	ATTRIBUTE(sb, cpus_dir, "dedicated", dedicated_flag);
-	ATTRIBUTE(sb, cpus_dir, "count", data->vcpus);
-	ATTRIBUTE(sb, cpus_dir, "weight_min", data->cpu_min);
-	ATTRIBUTE(sb, cpus_dir, "weight_max", data->cpu_max);
-	ATTRIBUTE(sb, cpus_dir, "weight_cur", data->cpu_shares);
+	ATTRIBUTE(cpus_dir, "cputime_us", data->used_cpu);
+	ATTRIBUTE(cpus_dir, "capped", capped_value);
+	ATTRIBUTE(cpus_dir, "dedicated", dedicated_flag);
+	ATTRIBUTE(cpus_dir, "count", data->vcpus);
+	/*
+	 * Note: The "weight_min" attribute got the wrong name.
+	 * The value represents the number of non-stopped (operating)
+	 * CPUS.
+	 */
+	ATTRIBUTE(cpus_dir, "weight_min", data->ocpus);
+	ATTRIBUTE(cpus_dir, "weight_max", data->cpu_max);
+	ATTRIBUTE(cpus_dir, "weight_cur", data->cpu_shares);
 
 	/* memory information */
-	mem_dir = hypfs_mkdir(sb, guest_dir, "mem");
+	mem_dir = hypfs_mkdir(guest_dir, "mem");
 	if (IS_ERR(mem_dir))
 		return PTR_ERR(mem_dir);
-	ATTRIBUTE(sb, mem_dir, "min_KiB", data->mem_min_kb);
-	ATTRIBUTE(sb, mem_dir, "max_KiB", data->mem_max_kb);
-	ATTRIBUTE(sb, mem_dir, "used_KiB", data->mem_used_kb);
-	ATTRIBUTE(sb, mem_dir, "share_KiB", data->mem_share_kb);
+	ATTRIBUTE(mem_dir, "min_KiB", data->mem_min_kb);
+	ATTRIBUTE(mem_dir, "max_KiB", data->mem_max_kb);
+	ATTRIBUTE(mem_dir, "used_KiB", data->mem_used_kb);
+	ATTRIBUTE(mem_dir, "share_KiB", data->mem_share_kb);
 
 	/* samples */
-	samples_dir = hypfs_mkdir(sb, guest_dir, "samples");
+	samples_dir = hypfs_mkdir(guest_dir, "samples");
 	if (IS_ERR(samples_dir))
 		return PTR_ERR(samples_dir);
-	ATTRIBUTE(sb, samples_dir, "cpu_using", data->cpu_use_samp);
-	ATTRIBUTE(sb, samples_dir, "cpu_delay", data->cpu_delay_samp);
-	ATTRIBUTE(sb, samples_dir, "mem_delay", data->page_wait_samp);
-	ATTRIBUTE(sb, samples_dir, "idle", data->idle_samp);
-	ATTRIBUTE(sb, samples_dir, "other", data->other_samp);
-	ATTRIBUTE(sb, samples_dir, "total", data->total_samp);
+	ATTRIBUTE(samples_dir, "cpu_using", data->cpu_use_samp);
+	ATTRIBUTE(samples_dir, "cpu_delay", data->cpu_delay_samp);
+	ATTRIBUTE(samples_dir, "mem_delay", data->page_wait_samp);
+	ATTRIBUTE(samples_dir, "idle", data->idle_samp);
+	ATTRIBUTE(samples_dir, "other", data->other_samp);
+	ATTRIBUTE(samples_dir, "total", data->total_samp);
 	return 0;
 }
 
-int hypfs_vm_create_files(struct super_block *sb, struct dentry *root)
+int hypfs_vm_create_files(struct dentry *root)
 {
 	struct dentry *dir, *file;
 	struct diag2fc_data *data;
@@ -183,38 +185,38 @@ int hypfs_vm_create_files(struct super_block *sb, struct dentry *root)
 		return PTR_ERR(data);
 
 	/* Hpervisor Info */
-	dir = hypfs_mkdir(sb, root, "hyp");
+	dir = hypfs_mkdir(root, "hyp");
 	if (IS_ERR(dir)) {
 		rc = PTR_ERR(dir);
 		goto failed;
 	}
-	file = hypfs_create_str(sb, dir, "type", "z/VM Hypervisor");
+	file = hypfs_create_str(dir, "type", "z/VM Hypervisor");
 	if (IS_ERR(file)) {
 		rc = PTR_ERR(file);
 		goto failed;
 	}
 
 	/* physical cpus */
-	dir = hypfs_mkdir(sb, root, "cpus");
+	dir = hypfs_mkdir(root, "cpus");
 	if (IS_ERR(dir)) {
 		rc = PTR_ERR(dir);
 		goto failed;
 	}
-	file = hypfs_create_u64(sb, dir, "count", data->lcpus);
+	file = hypfs_create_u64(dir, "count", data->lcpus);
 	if (IS_ERR(file)) {
 		rc = PTR_ERR(file);
 		goto failed;
 	}
 
 	/* guests */
-	dir = hypfs_mkdir(sb, root, "systems");
+	dir = hypfs_mkdir(root, "systems");
 	if (IS_ERR(dir)) {
 		rc = PTR_ERR(dir);
 		goto failed;
 	}
 
 	for (i = 0; i < count; i++) {
-		rc = hpyfs_vm_create_guest(sb, dir, &(data[i]));
+		rc = hpyfs_vm_create_guest(dir, &(data[i]));
 		if (rc)
 			goto failed;
 	}
@@ -239,42 +241,29 @@ struct dbfs_d2fc {
 	char			buf[];	/* d2fc buffer */
 } __attribute__ ((packed));
 
-static int dbfs_d2fc_open(struct inode *inode, struct file *file)
+static int dbfs_diag2fc_create(void **data, void **data_free_ptr, size_t *size)
 {
-	struct dbfs_d2fc *data;
+	struct dbfs_d2fc *d2fc;
 	unsigned int count;
 
-	data = diag2fc_store(guest_query, &count, sizeof(data->hdr));
-	if (IS_ERR(data))
-		return PTR_ERR(data);
-	get_clock_ext(data->hdr.tod_ext);
-	data->hdr.len = count * sizeof(struct diag2fc_data);
-	data->hdr.version = DBFS_D2FC_HDR_VERSION;
-	data->hdr.count = count;
-	memset(&data->hdr.reserved, 0, sizeof(data->hdr.reserved));
-	file->private_data = data;
-	return nonseekable_open(inode, file);
-}
-
-static int dbfs_d2fc_release(struct inode *inode, struct file *file)
-{
-	diag2fc_free(file->private_data);
+	d2fc = diag2fc_store(guest_query, &count, sizeof(d2fc->hdr));
+	if (IS_ERR(d2fc))
+		return PTR_ERR(d2fc);
+	get_tod_clock_ext(d2fc->hdr.tod_ext);
+	d2fc->hdr.len = count * sizeof(struct diag2fc_data);
+	d2fc->hdr.version = DBFS_D2FC_HDR_VERSION;
+	d2fc->hdr.count = count;
+	memset(&d2fc->hdr.reserved, 0, sizeof(d2fc->hdr.reserved));
+	*data = d2fc;
+	*data_free_ptr = d2fc;
+	*size = d2fc->hdr.len + sizeof(struct dbfs_d2fc_hdr);
 	return 0;
 }
 
-static ssize_t dbfs_d2fc_read(struct file *file, char __user *buf,
-				    size_t size, loff_t *ppos)
-{
-	struct dbfs_d2fc *data = file->private_data;
-
-	return simple_read_from_buffer(buf, size, ppos, data, data->hdr.len +
-				       sizeof(struct dbfs_d2fc_hdr));
-}
-
-static const struct file_operations dbfs_d2fc_ops = {
-	.open		= dbfs_d2fc_open,
-	.read		= dbfs_d2fc_read,
-	.release	= dbfs_d2fc_release,
+static struct hypfs_dbfs_file dbfs_file_2fc = {
+	.name		= "diag_2fc",
+	.data_create	= dbfs_diag2fc_create,
+	.data_free	= diag2fc_free,
 };
 
 int hypfs_vm_init(void)
@@ -287,18 +276,12 @@ int hypfs_vm_init(void)
 		guest_query = local_guest;
 	else
 		return -EACCES;
-
-	dbfs_d2fc_file = debugfs_create_file("diag_2fc", 0400, hypfs_dbfs_dir,
-					     NULL, &dbfs_d2fc_ops);
-	if (IS_ERR(dbfs_d2fc_file))
-		return PTR_ERR(dbfs_d2fc_file);
-
-	return 0;
+	return hypfs_dbfs_create_file(&dbfs_file_2fc);
 }
 
 void hypfs_vm_exit(void)
 {
 	if (!MACHINE_IS_VM)
 		return;
-	debugfs_remove(dbfs_d2fc_file);
+	hypfs_dbfs_remove_file(&dbfs_file_2fc);
 }
diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index 98a4a4c267a..c952b981e4f 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -1,5 +1,4 @@
 /*
- *  arch/s390/hypfs/inode.c
  *    Hypervisor filesystem for Linux on s390.
  *
  *    Copyright IBM Corp. 2006, 2008
@@ -22,18 +21,18 @@
 #include <linux/module.h>
 #include <linux/seq_file.h>
 #include <linux/mount.h>
+#include <linux/aio.h>
 #include <asm/ebcdic.h>
 #include "hypfs.h"
 
 #define HYPFS_MAGIC 0x687970	/* ASCII 'hyp' */
 #define TMP_SIZE 64		/* size of temporary buffers */
 
-static struct dentry *hypfs_create_update_file(struct super_block *sb,
-					       struct dentry *dir);
+static struct dentry *hypfs_create_update_file(struct dentry *dir);
 
 struct hypfs_sb_info {
-	uid_t uid;			/* uid used for files and dirs */
-	gid_t gid;			/* gid used for files and dirs */
+	kuid_t uid;			/* uid used for files and dirs */
+	kgid_t gid;			/* gid used for files and dirs */
 	struct dentry *update_file;	/* file to trigger update */
 	time_t last_update;		/* last update time in secs since 1970 */
 	struct mutex lock;		/* lock to protect update process */
@@ -46,8 +45,6 @@ static const struct super_operations hypfs_s_ops;
 /* start of list of all dentries, which have to be deleted on update */
 static struct dentry *hypfs_last_dentry;
 
-struct dentry *hypfs_dbfs_dir;
-
 static void hypfs_update_update(struct super_block *sb)
 {
 	struct hypfs_sb_info *sb_info = sb->s_fs_info;
@@ -75,8 +72,6 @@ static void hypfs_remove(struct dentry *dentry)
 	struct dentry *parent;
 
 	parent = dentry->d_parent;
-	if (!parent || !parent->d_inode)
-		return;
 	mutex_lock(&parent->d_inode->i_mutex);
 	if (hypfs_positive(dentry)) {
 		if (S_ISDIR(dentry->d_inode->i_mode))
@@ -99,33 +94,32 @@ static void hypfs_delete_tree(struct dentry *root)
 	}
 }
 
-static struct inode *hypfs_make_inode(struct super_block *sb, int mode)
+static struct inode *hypfs_make_inode(struct super_block *sb, umode_t mode)
 {
 	struct inode *ret = new_inode(sb);
 
 	if (ret) {
 		struct hypfs_sb_info *hypfs_info = sb->s_fs_info;
+		ret->i_ino = get_next_ino();
 		ret->i_mode = mode;
 		ret->i_uid = hypfs_info->uid;
 		ret->i_gid = hypfs_info->gid;
 		ret->i_atime = ret->i_mtime = ret->i_ctime = CURRENT_TIME;
-		if (mode & S_IFDIR)
-			ret->i_nlink = 2;
-		else
-			ret->i_nlink = 1;
+		if (S_ISDIR(mode))
+			set_nlink(ret, 2);
 	}
 	return ret;
 }
 
 static void hypfs_evict_inode(struct inode *inode)
 {
-	end_writeback(inode);
+	clear_inode(inode);
 	kfree(inode->i_private);
 }
 
 static int hypfs_open(struct inode *inode, struct file *filp)
 {
-	char *data = filp->f_path.dentry->d_inode->i_private;
+	char *data = file_inode(filp)->i_private;
 	struct hypfs_sb_info *fs_info;
 
 	if (filp->f_mode & FMODE_WRITE) {
@@ -177,12 +171,10 @@ static ssize_t hypfs_aio_write(struct kiocb *iocb, const struct iovec *iov,
 			      unsigned long nr_segs, loff_t offset)
 {
 	int rc;
-	struct super_block *sb;
-	struct hypfs_sb_info *fs_info;
+	struct super_block *sb = file_inode(iocb->ki_filp)->i_sb;
+	struct hypfs_sb_info *fs_info = sb->s_fs_info;
 	size_t count = iov_length(iov, nr_segs);
 
-	sb = iocb->ki_filp->f_path.dentry->d_inode->i_sb;
-	fs_info = sb->s_fs_info;
 	/*
 	 * Currently we only allow one update per second for two reasons:
 	 * 1. diag 204 is VERY expensive
@@ -200,9 +192,9 @@ static ssize_t hypfs_aio_write(struct kiocb *iocb, const struct iovec *iov,
 	}
 	hypfs_delete_tree(sb->s_root);
 	if (MACHINE_IS_VM)
-		rc = hypfs_vm_create_files(sb, sb->s_root);
+		rc = hypfs_vm_create_files(sb->s_root);
 	else
-		rc = hypfs_diag_create_files(sb, sb->s_root);
+		rc = hypfs_diag_create_files(sb->s_root);
 	if (rc) {
 		pr_err("Updating the hypfs tree failed\n");
 		hypfs_delete_tree(sb->s_root);
@@ -233,6 +225,8 @@ static int hypfs_parse_options(char *options, struct super_block *sb)
 {
 	char *str;
 	substring_t args[MAX_OPT_ARGS];
+	kuid_t uid;
+	kgid_t gid;
 
 	if (!options)
 		return 0;
@@ -247,12 +241,18 @@ static int hypfs_parse_options(char *options, struct super_block *sb)
 		case opt_uid:
 			if (match_int(&args[0], &option))
 				return -EINVAL;
-			hypfs_info->uid = option;
+			uid = make_kuid(current_user_ns(), option);
+			if (!uid_valid(uid))
+				return -EINVAL;
+			hypfs_info->uid = uid;
 			break;
 		case opt_gid:
 			if (match_int(&args[0], &option))
 				return -EINVAL;
-			hypfs_info->gid = option;
+			gid = make_kgid(current_user_ns(), option);
+			if (!gid_valid(gid))
+				return -EINVAL;
+			hypfs_info->gid = gid;
 			break;
 		case opt_err:
 		default:
@@ -263,12 +263,12 @@ static int hypfs_parse_options(char *options, struct super_block *sb)
 	return 0;
 }
 
-static int hypfs_show_options(struct seq_file *s, struct vfsmount *mnt)
+static int hypfs_show_options(struct seq_file *s, struct dentry *root)
 {
-	struct hypfs_sb_info *hypfs_info = mnt->mnt_sb->s_fs_info;
+	struct hypfs_sb_info *hypfs_info = root->d_sb->s_fs_info;
 
-	seq_printf(s, ",uid=%u", hypfs_info->uid);
-	seq_printf(s, ",gid=%u", hypfs_info->gid);
+	seq_printf(s, ",uid=%u", from_kuid_munged(&init_user_ns, hypfs_info->uid));
+	seq_printf(s, ",gid=%u", from_kgid_munged(&init_user_ns, hypfs_info->gid));
 	return 0;
 }
 
@@ -297,18 +297,16 @@ static int hypfs_fill_super(struct super_block *sb, void *data, int silent)
 		return -ENOMEM;
 	root_inode->i_op = &simple_dir_inode_operations;
 	root_inode->i_fop = &simple_dir_operations;
-	sb->s_root = root_dentry = d_alloc_root(root_inode);
-	if (!root_dentry) {
-		iput(root_inode);
+	sb->s_root = root_dentry = d_make_root(root_inode);
+	if (!root_dentry)
 		return -ENOMEM;
-	}
 	if (MACHINE_IS_VM)
-		rc = hypfs_vm_create_files(sb, root_dentry);
+		rc = hypfs_vm_create_files(root_dentry);
 	else
-		rc = hypfs_diag_create_files(sb, root_dentry);
+		rc = hypfs_diag_create_files(root_dentry);
 	if (rc)
 		return rc;
-	sbi->update_file = hypfs_create_update_file(sb, root_dentry);
+	sbi->update_file = hypfs_create_update_file(root_dentry);
 	if (IS_ERR(sbi->update_file))
 		return PTR_ERR(sbi->update_file);
 	hypfs_update_update(sb);
@@ -316,10 +314,10 @@ static int hypfs_fill_super(struct super_block *sb, void *data, int silent)
 	return 0;
 }
 
-static int hypfs_get_super(struct file_system_type *fst, int flags,
-			const char *devname, void *data, struct vfsmount *mnt)
+static struct dentry *hypfs_mount(struct file_system_type *fst, int flags,
+			const char *devname, void *data)
 {
-	return get_sb_single(fst, flags, data, hypfs_fill_super, mnt);
+	return mount_single(fst, flags, data, hypfs_fill_super);
 }
 
 static void hypfs_kill_super(struct super_block *sb)
@@ -335,9 +333,8 @@ static void hypfs_kill_super(struct super_block *sb)
 	kill_litter_super(sb);
 }
 
-static struct dentry *hypfs_create_file(struct super_block *sb,
-					struct dentry *parent, const char *name,
-					char *data, mode_t mode)
+static struct dentry *hypfs_create_file(struct dentry *parent, const char *name,
+					char *data, umode_t mode)
 {
 	struct dentry *dentry;
 	struct inode *inode;
@@ -348,22 +345,22 @@ static struct dentry *hypfs_create_file(struct super_block *sb,
 		dentry = ERR_PTR(-ENOMEM);
 		goto fail;
 	}
-	inode = hypfs_make_inode(sb, mode);
+	inode = hypfs_make_inode(parent->d_sb, mode);
 	if (!inode) {
 		dput(dentry);
 		dentry = ERR_PTR(-ENOMEM);
 		goto fail;
 	}
-	if (mode & S_IFREG) {
+	if (S_ISREG(mode)) {
 		inode->i_fop = &hypfs_file_ops;
 		if (data)
 			inode->i_size = strlen(data);
 		else
 			inode->i_size = 0;
-	} else if (mode & S_IFDIR) {
+	} else if (S_ISDIR(mode)) {
 		inode->i_op = &simple_dir_inode_operations;
 		inode->i_fop = &simple_dir_operations;
-		parent->d_inode->i_nlink++;
+		inc_nlink(parent->d_inode);
 	} else
 		BUG();
 	inode->i_private = data;
@@ -374,24 +371,22 @@ fail:
 	return dentry;
 }
 
-struct dentry *hypfs_mkdir(struct super_block *sb, struct dentry *parent,
-			   const char *name)
+struct dentry *hypfs_mkdir(struct dentry *parent, const char *name)
 {
 	struct dentry *dentry;
 
-	dentry = hypfs_create_file(sb, parent, name, NULL, S_IFDIR | DIR_MODE);
+	dentry = hypfs_create_file(parent, name, NULL, S_IFDIR | DIR_MODE);
 	if (IS_ERR(dentry))
 		return dentry;
 	hypfs_add_dentry(dentry);
 	return dentry;
 }
 
-static struct dentry *hypfs_create_update_file(struct super_block *sb,
-					       struct dentry *dir)
+static struct dentry *hypfs_create_update_file(struct dentry *dir)
 {
 	struct dentry *dentry;
 
-	dentry = hypfs_create_file(sb, dir, "update", NULL,
+	dentry = hypfs_create_file(dir, "update", NULL,
 				   S_IFREG | UPDATE_FILE_MODE);
 	/*
 	 * We do not put the update file on the 'delete' list with
@@ -401,7 +396,7 @@ static struct dentry *hypfs_create_update_file(struct super_block *sb,
 	return dentry;
 }
 
-struct dentry *hypfs_create_u64(struct super_block *sb, struct dentry *dir,
+struct dentry *hypfs_create_u64(struct dentry *dir,
 				const char *name, __u64 value)
 {
 	char *buffer;
@@ -413,7 +408,7 @@ struct dentry *hypfs_create_u64(struct super_block *sb, struct dentry *dir,
 	if (!buffer)
 		return ERR_PTR(-ENOMEM);
 	dentry =
-	    hypfs_create_file(sb, dir, name, buffer, S_IFREG | REG_FILE_MODE);
+	    hypfs_create_file(dir, name, buffer, S_IFREG | REG_FILE_MODE);
 	if (IS_ERR(dentry)) {
 		kfree(buffer);
 		return ERR_PTR(-ENOMEM);
@@ -422,7 +417,7 @@ struct dentry *hypfs_create_u64(struct super_block *sb, struct dentry *dir,
 	return dentry;
 }
 
-struct dentry *hypfs_create_str(struct super_block *sb, struct dentry *dir,
+struct dentry *hypfs_create_str(struct dentry *dir,
 				const char *name, char *string)
 {
 	char *buffer;
@@ -433,7 +428,7 @@ struct dentry *hypfs_create_str(struct super_block *sb, struct dentry *dir,
 		return ERR_PTR(-ENOMEM);
 	sprintf(buffer, "%s\n", string);
 	dentry =
-	    hypfs_create_file(sb, dir, name, buffer, S_IFREG | REG_FILE_MODE);
+	    hypfs_create_file(dir, name, buffer, S_IFREG | REG_FILE_MODE);
 	if (IS_ERR(dentry)) {
 		kfree(buffer);
 		return ERR_PTR(-ENOMEM);
@@ -449,14 +444,16 @@ static const struct file_operations hypfs_file_ops = {
 	.write		= do_sync_write,
 	.aio_read	= hypfs_aio_read,
 	.aio_write	= hypfs_aio_write,
+	.llseek		= no_llseek,
 };
 
 static struct file_system_type hypfs_type = {
 	.owner		= THIS_MODULE,
 	.name		= "s390_hypfs",
-	.get_sb		= hypfs_get_super,
+	.mount		= hypfs_mount,
 	.kill_sb	= hypfs_kill_super
 };
+MODULE_ALIAS_FS("s390_hypfs");
 
 static const struct super_operations hypfs_s_ops = {
 	.statfs		= simple_statfs,
@@ -470,22 +467,25 @@ static int __init hypfs_init(void)
 {
 	int rc;
 
-	hypfs_dbfs_dir = debugfs_create_dir("s390_hypfs", NULL);
-	if (IS_ERR(hypfs_dbfs_dir))
-		return PTR_ERR(hypfs_dbfs_dir);
-
+	rc = hypfs_dbfs_init();
+	if (rc)
+		return rc;
 	if (hypfs_diag_init()) {
 		rc = -ENODATA;
-		goto fail_debugfs_remove;
+		goto fail_dbfs_exit;
 	}
 	if (hypfs_vm_init()) {
 		rc = -ENODATA;
 		goto fail_hypfs_diag_exit;
 	}
+	if (hypfs_sprp_init()) {
+		rc = -ENODATA;
+		goto fail_hypfs_vm_exit;
+	}
 	s390_kobj = kobject_create_and_add("s390", hypervisor_kobj);
 	if (!s390_kobj) {
 		rc = -ENOMEM;
-		goto fail_hypfs_vm_exit;
+		goto fail_hypfs_sprp_exit;
 	}
 	rc = register_filesystem(&hypfs_type);
 	if (rc)
@@ -494,24 +494,26 @@ static int __init hypfs_init(void)
 
 fail_filesystem:
 	kobject_put(s390_kobj);
+fail_hypfs_sprp_exit:
+	hypfs_sprp_exit();
 fail_hypfs_vm_exit:
 	hypfs_vm_exit();
 fail_hypfs_diag_exit:
 	hypfs_diag_exit();
-fail_debugfs_remove:
-	debugfs_remove(hypfs_dbfs_dir);
-
+fail_dbfs_exit:
+	hypfs_dbfs_exit();
 	pr_err("Initialization of hypfs failed with rc=%i\n", rc);
 	return rc;
 }
 
 static void __exit hypfs_exit(void)
 {
-	hypfs_diag_exit();
-	hypfs_vm_exit();
-	debugfs_remove(hypfs_dbfs_dir);
 	unregister_filesystem(&hypfs_type);
 	kobject_put(s390_kobj);
+	hypfs_sprp_exit();
+	hypfs_vm_exit();
+	hypfs_diag_exit();
+	hypfs_dbfs_exit();
 }
 
 module_init(hypfs_init)