mirror of https://gitee.com/openkylin/linux.git
[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>
This commit is contained in:
NeilBrown
Linus Torvalds
parent
31399d9e56
commit
007583c925
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@ -1683,12 +1683,6 @@ static void analyze_sbs(mddev_t * mddev)
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}
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struct md_sysfs_entry {
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struct attribute attr;
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ssize_t (*show)(mddev_t *, char *);
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ssize_t (*store)(mddev_t *, const char *, size_t);
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};
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static ssize_t
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md_show_level(mddev_t *mddev, char *page)
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{
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@ -1732,21 +1732,17 @@ static void raid5d (mddev_t *mddev)
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PRINTK("--- raid5d inactive\n");
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}
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struct raid5_sysfs_entry {
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struct attribute attr;
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ssize_t (*show)(raid5_conf_t *, char *);
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ssize_t (*store)(raid5_conf_t *, const char *, ssize_t);
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};
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static ssize_t
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raid5_show_stripe_cache_size(raid5_conf_t *conf, char *page)
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raid5_show_stripe_cache_size(mddev_t *mddev, char *page)
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{
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raid5_conf_t *conf = mddev_to_conf(mddev);
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return sprintf(page, "%d\n", conf->max_nr_stripes);
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}
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static ssize_t
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raid5_store_stripe_cache_size(raid5_conf_t *conf, const char *page, ssize_t len)
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raid5_store_stripe_cache_size(mddev_t *mddev, const char *page, size_t len)
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{
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raid5_conf_t *conf = mddev_to_conf(mddev);
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char *end;
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int new;
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if (len >= PAGE_SIZE)
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@ -1770,68 +1766,33 @@ raid5_store_stripe_cache_size(raid5_conf_t *conf, const char *page, ssize_t len)
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}
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return len;
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}
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static struct raid5_sysfs_entry raid5_stripecache_size = {
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static struct md_sysfs_entry raid5_stripecache_size = {
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.attr = {.name = "stripe_cache_size", .mode = S_IRUGO | S_IWUSR },
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.show = raid5_show_stripe_cache_size,
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.store = raid5_store_stripe_cache_size,
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};
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static ssize_t
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raid5_show_stripe_cache_active(raid5_conf_t *conf, char *page)
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raid5_show_stripe_cache_active(mddev_t *mddev, char *page)
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{
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raid5_conf_t *conf = mddev_to_conf(mddev);
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return sprintf(page, "%d\n", atomic_read(&conf->active_stripes));
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}
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static struct raid5_sysfs_entry raid5_stripecache_active = {
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static struct md_sysfs_entry raid5_stripecache_active = {
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.attr = {.name = "stripe_cache_active", .mode = S_IRUGO},
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.show = raid5_show_stripe_cache_active,
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};
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static struct attribute *raid5_default_attrs[] = {
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static struct attribute *raid5_attrs[] = {
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&raid5_stripecache_size.attr,
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&raid5_stripecache_active.attr,
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NULL,
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};
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static ssize_t
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raid5_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
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{
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struct raid5_sysfs_entry *entry = container_of(attr, struct raid5_sysfs_entry, attr);
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raid5_conf_t *conf = container_of(kobj, raid5_conf_t, kobj);
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if (!entry->show)
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return -EIO;
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return entry->show(conf, page);
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}
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static ssize_t
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raid5_attr_store(struct kobject *kobj, struct attribute *attr,
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const char *page, size_t length)
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{
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struct raid5_sysfs_entry *entry = container_of(attr, struct raid5_sysfs_entry, attr);
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raid5_conf_t *conf = container_of(kobj, raid5_conf_t, kobj);
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if (!entry->store)
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return -EIO;
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return entry->store(conf, page, length);
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}
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static void raid5_free(struct kobject *ko)
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{
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raid5_conf_t *conf = container_of(ko, raid5_conf_t, kobj);
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kfree(conf);
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}
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static struct sysfs_ops raid5_sysfs_ops = {
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.show = raid5_attr_show,
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.store = raid5_attr_store,
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};
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static struct kobj_type raid5_ktype = {
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.release = raid5_free,
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.sysfs_ops = &raid5_sysfs_ops,
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.default_attrs = raid5_default_attrs,
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static struct attribute_group raid5_attrs_group = {
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.name = NULL,
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.attrs = raid5_attrs,
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};
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static int run(mddev_t *mddev)
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@ -1975,10 +1936,7 @@ memory = conf->max_nr_stripes * (sizeof(struct stripe_head) +
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}
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/* Ok, everything is just fine now */
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conf->kobj.parent = &mddev->kobj;
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strcpy(conf->kobj.name, "raid5");
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conf->kobj.ktype = &raid5_ktype;
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kobject_register(&conf->kobj);
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sysfs_create_group(&mddev->kobj, &raid5_attrs_group);
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if (mddev->bitmap)
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mddev->thread->timeout = mddev->bitmap->daemon_sleep * HZ;
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@ -2012,7 +1970,7 @@ static int stop(mddev_t *mddev)
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shrink_stripes(conf);
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free_pages((unsigned long) conf->stripe_hashtbl, HASH_PAGES_ORDER);
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blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/
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kobject_unregister(&conf->kobj);
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sysfs_remove_group(&mddev->kobj, &raid5_attrs_group);
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mddev->private = NULL;
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return 0;
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}
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@ -282,6 +282,13 @@ struct mdk_personality_s
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};
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struct md_sysfs_entry {
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struct attribute attr;
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ssize_t (*show)(mddev_t *, char *);
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ssize_t (*store)(mddev_t *, const char *, size_t);
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};
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static inline char * mdname (mddev_t * mddev)
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{
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return mddev->gendisk ? mddev->gendisk->disk_name : "mdX";
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@ -228,7 +228,6 @@ struct raid5_private_data {
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* Cleared when a sync completes.
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*/
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struct kobject kobj;
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/*
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* Free stripes pool
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*/
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