[PATCH 094/196] kset: convert block_subsys to use kset_create

Greg Kroah-Hartman
2008-01-25T07:52:58Z

Dynamically create the kset instead of declaring it statically. We also
rename block_subsys to block_kset to catch all users of this symbol
with a build error instead of an easy-to-ignore build warning.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
block/genhd.c | 34 ++++++++++++++++------------------
fs/partitions/check.c | 6 +++---
2 files changed, 19 insertions(+), 21 deletions(-)

diff --git a/block/genhd.c b/block/genhd.c
index 32227b7..69aa738 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -17,7 +17,8 @@
#include <linux/buffer_head.h>
#include <linux/mutex.h>

-struct kset block_subsys;
+struct kset *block_kset;
+static struct kset_uevent_ops block_uevent_ops;
static DEFINE_MUTEX(block_subsys_lock);

/*
@@ -221,7 +222,7 @@ void __init printk_all_partitions(void)

mutex_lock(&block_subsys_lock);
/* For each block device... */
- list_for_each_entry(sgp, &block_subsys.list, kobj.entry) {
+ list_for_each_entry(sgp, &block_kset->list, kobj.entry) {
char buf[BDEVNAME_SIZE];
/*
* Don't show empty devices or things that have been surpressed
@@ -270,7 +271,7 @@ static void *part_start(struct seq_file *part, loff_t *pos)
loff_t l = *pos;

mutex_lock(&block_subsys_lock);
- list_for_each(p, &block_subsys.list)
+ list_for_each(p, &block_kset->list)
if (!l--)
return list_entry(p, struct gendisk, kobj.entry);
return NULL;
@@ -280,7 +281,7 @@ static void *part_next(struct seq_file *part, void *v, loff_t *pos)
{
struct list_head *p = ((struct gendisk *)v)->kobj.entry.next;
++*pos;
- return p==&block_subsys.list ? NULL :
+ return p==&block_kset->list ? NULL :
list_entry(p, struct gendisk, kobj.entry);
}

@@ -295,7 +296,7 @@ static int show_partition(struct seq_file *part, void *v)
int n;
char buf[BDEVNAME_SIZE];

- if (&sgp->kobj.entry == block_subsys.list.next)
+ if (&sgp->kobj.entry == block_kset->list.next)
seq_puts(part, "major minor #blocks name\n\n");

/* Don't show non-partitionable removeable devices or empty devices */
@@ -345,15 +346,14 @@ static struct kobject *base_probe(dev_t dev, int *part, void *data)

static int __init genhd_device_init(void)
{
- int err;
-
bdev_map = kobj_map_init(base_probe, &block_subsys_lock);
blk_dev_init();
- err = subsystem_register(&block_subsys);
- if (err < 0)
- printk(KERN_WARNING "%s: subsystem_register error: %d\n",
- __FUNCTION__, err);
- return err;
+ block_kset = kset_create_and_add("block", &block_uevent_ops, NULL);
+ if (!block_kset) {
+ printk(KERN_WARNING "%s: kset_create error\n", __FUNCTION__);
+ return -ENOMEM;
+ }
+ return 0;
}

subsys_initcall(genhd_device_init);
@@ -584,8 +584,6 @@ static struct kset_uevent_ops block_uevent_ops = {
.uevent = block_uevent,
};

-decl_subsys(block, &block_uevent_ops);
-
/*
* aggregate disk stat collector. Uses the same stats that the sysfs
* entries do, above, but makes them available through one seq_file.
@@ -603,7 +601,7 @@ static void *diskstats_start(struct seq_file *part, loff_t *pos)
struct list_head *p;

mutex_lock(&block_subsys_lock);
- list_for_each(p, &block_subsys.list)
+ list_for_each(p, &block_kset->list)
if (!k--)
return list_entry(p, struct gendisk, kobj.entry);
return NULL;
@@ -613,7 +611,7 @@ static void *diskstats_next(struct seq_file *part, void *v, loff_t *pos)
{
struct list_head *p = ((struct gendisk *)v)->kobj.entry.next;
++*pos;
- return p==&block_subsys.list ? NULL :
+ return p==&block_kset->list ? NULL :
list_entry(p, struct gendisk, kobj.entry);
}

@@ -629,7 +627,7 @@ static int diskstats_show(struct seq_file *s, void *v)
int n = 0;

/*
- if (&sgp->kobj.entry == block_subsys.kset.list.next)
+ if (&sgp->kobj.entry == block_kset->list.next)
seq_puts(s, "major minor name"
" rio rmerge rsect ruse wio wmerge "
"wsect wuse running use aveq"
@@ -721,7 +719,7 @@ struct gendisk *alloc_disk_node(int minors, int node_id)
}
}
disk->minors = minors;
- disk->kobj.kset = &block_subsys;
+ disk->kobj.kset = block_kset;
disk->kobj.ktype = &ktype_block;
kobject_init(&disk->kobj);
rand_initialize_disk(disk);
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 69685bb..9184215 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -316,7 +316,7 @@ static struct attribute * default_attrs[] = {
NULL,
};

-extern struct kset block_subsys;
+extern struct kset *block_kset;

static void part_release(struct kobject *kobj)
{
@@ -393,7 +393,7 @@ void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len,
kobject_add(&p->kobj);
if (!disk->part_uevent_suppress)
kobject_uevent(&p->kobj, KOBJ_ADD);
- sysfs_create_link(&p->kobj, &block_subsys.kobj, "subsystem");
+ sysfs_create_link(&p->kobj, &block_kset->kobj, "subsystem");
if (flags & ADDPART_FLAG_WHOLEDISK) {
static struct attribute addpartattr = {
.name = "whole_disk",
@@ -448,7 +448,7 @@ static int disk_sysfs_symlinks(struct gendisk *disk)
goto err_out_dev_link;
}

- err = sysfs_create_link(&disk->kobj, &block_subsys.kobj,
+ err = sysfs_create_link(&disk->kobj, &block_kset->kobj,
"subsystem");
if (err)
goto err_out_disk_name_lnk;
--
1.5.3.8