[PATCH] md: change raid5 sysfs attribute to not create a new directory
There isn't really a need for raid5 attributes to be an a subdirectory,
so this patch moves them from
/sys/block/mdX/md/raid5/attribute
to
/sys/block/mdX/md/attribute
This suggests that all md personalities should co-operate about
namespace usage, but that shouldn't be a problem.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 246c9b1..08a1620b 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -1732,21 +1732,17 @@
PRINTK("--- raid5d inactive\n");
}
-struct raid5_sysfs_entry {
- struct attribute attr;
- ssize_t (*show)(raid5_conf_t *, char *);
- ssize_t (*store)(raid5_conf_t *, const char *, ssize_t);
-};
-
static ssize_t
-raid5_show_stripe_cache_size(raid5_conf_t *conf, char *page)
+raid5_show_stripe_cache_size(mddev_t *mddev, char *page)
{
+ raid5_conf_t *conf = mddev_to_conf(mddev);
return sprintf(page, "%d\n", conf->max_nr_stripes);
}
static ssize_t
-raid5_store_stripe_cache_size(raid5_conf_t *conf, const char *page, ssize_t len)
+raid5_store_stripe_cache_size(mddev_t *mddev, const char *page, size_t len)
{
+ raid5_conf_t *conf = mddev_to_conf(mddev);
char *end;
int new;
if (len >= PAGE_SIZE)
@@ -1770,68 +1766,33 @@
}
return len;
}
-static struct raid5_sysfs_entry raid5_stripecache_size = {
+
+static struct md_sysfs_entry raid5_stripecache_size = {
.attr = {.name = "stripe_cache_size", .mode = S_IRUGO | S_IWUSR },
.show = raid5_show_stripe_cache_size,
.store = raid5_store_stripe_cache_size,
};
static ssize_t
-raid5_show_stripe_cache_active(raid5_conf_t *conf, char *page)
+raid5_show_stripe_cache_active(mddev_t *mddev, char *page)
{
+ raid5_conf_t *conf = mddev_to_conf(mddev);
return sprintf(page, "%d\n", atomic_read(&conf->active_stripes));
}
-static struct raid5_sysfs_entry raid5_stripecache_active = {
+static struct md_sysfs_entry raid5_stripecache_active = {
.attr = {.name = "stripe_cache_active", .mode = S_IRUGO},
.show = raid5_show_stripe_cache_active,
};
-static struct attribute *raid5_default_attrs[] = {
+static struct attribute *raid5_attrs[] = {
&raid5_stripecache_size.attr,
&raid5_stripecache_active.attr,
NULL,
};
-
-static ssize_t
-raid5_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
-{
- struct raid5_sysfs_entry *entry = container_of(attr, struct raid5_sysfs_entry, attr);
- raid5_conf_t *conf = container_of(kobj, raid5_conf_t, kobj);
-
- if (!entry->show)
- return -EIO;
- return entry->show(conf, page);
-}
-
-static ssize_t
-raid5_attr_store(struct kobject *kobj, struct attribute *attr,
- const char *page, size_t length)
-{
- struct raid5_sysfs_entry *entry = container_of(attr, struct raid5_sysfs_entry, attr);
- raid5_conf_t *conf = container_of(kobj, raid5_conf_t, kobj);
-
- if (!entry->store)
- return -EIO;
- return entry->store(conf, page, length);
-}
-
-static void raid5_free(struct kobject *ko)
-{
- raid5_conf_t *conf = container_of(ko, raid5_conf_t, kobj);
- kfree(conf);
-}
-
-
-static struct sysfs_ops raid5_sysfs_ops = {
- .show = raid5_attr_show,
- .store = raid5_attr_store,
-};
-
-static struct kobj_type raid5_ktype = {
- .release = raid5_free,
- .sysfs_ops = &raid5_sysfs_ops,
- .default_attrs = raid5_default_attrs,
+static struct attribute_group raid5_attrs_group = {
+ .name = NULL,
+ .attrs = raid5_attrs,
};
static int run(mddev_t *mddev)
@@ -1975,10 +1936,7 @@
}
/* Ok, everything is just fine now */
- conf->kobj.parent = &mddev->kobj;
- strcpy(conf->kobj.name, "raid5");
- conf->kobj.ktype = &raid5_ktype;
- kobject_register(&conf->kobj);
+ sysfs_create_group(&mddev->kobj, &raid5_attrs_group);
if (mddev->bitmap)
mddev->thread->timeout = mddev->bitmap->daemon_sleep * HZ;
@@ -2012,7 +1970,7 @@
shrink_stripes(conf);
free_pages((unsigned long) conf->stripe_hashtbl, HASH_PAGES_ORDER);
blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/
- kobject_unregister(&conf->kobj);
+ sysfs_remove_group(&mddev->kobj, &raid5_attrs_group);
mddev->private = NULL;
return 0;
}