#ifdef CONFIG_PROC_FS
/* get block device names in somewhat random order */
-int get_blkdev_list(char *p)
+int get_blkdev_list(char *p, int used)
{
struct blk_major_name *n;
int i, len;
- len = sprintf(p, "\nBlock devices:\n");
+ len = snprintf(p, (PAGE_SIZE-used), "\nBlock devices:\n");
down(&block_subsys_sem);
for (i = 0; i < ARRAY_SIZE(major_names); i++) {
- for (n = major_names[i]; n; n = n->next)
+ for (n = major_names[i]; n; n = n->next) {
+ /*
+ * If the curent string plus the 5 extra characters
+ * in the line would run us off the page, then we're done
+ */
+ if ((len + used + strlen(n->name) + 5) >= PAGE_SIZE)
+ goto page_full;
len += sprintf(p+len, "%3d %s\n",
n->major, n->name);
+ }
}
+page_full:
up(&block_subsys_sem);
return len;
struct gendisk *disk = to_disk(kobj);
struct disk_attribute *disk_attr =
container_of(attr,struct disk_attribute,attr);
- ssize_t ret = 0;
+ ssize_t ret = -EIO;
if (disk_attr->show)
ret = disk_attr->show(disk,page);
return ret;
}
+static ssize_t disk_attr_store(struct kobject * kobj, struct attribute * attr,
+ const char *page, size_t count)
+{
+ struct gendisk *disk = to_disk(kobj);
+ struct disk_attribute *disk_attr =
+ container_of(attr,struct disk_attribute,attr);
+ ssize_t ret = 0;
+
+ if (disk_attr->store)
+ ret = disk_attr->store(disk, page, count);
+ return ret;
+}
+
static struct sysfs_ops disk_sysfs_ops = {
.show = &disk_attr_show,
+ .store = &disk_attr_store,
};
+static ssize_t disk_uevent_store(struct gendisk * disk,
+ const char *buf, size_t count)
+{
+ kobject_hotplug(&disk->kobj, KOBJ_ADD);
+ return count;
+}
static ssize_t disk_dev_read(struct gendisk * disk, char *page)
{
dev_t base = MKDEV(disk->major, disk->first_minor);
jiffies_to_msecs(disk_stat_read(disk, io_ticks)),
jiffies_to_msecs(disk_stat_read(disk, time_in_queue)));
}
+static struct disk_attribute disk_attr_uevent = {
+ .attr = {.name = "uevent", .mode = S_IWUSR },
+ .store = disk_uevent_store
+};
static struct disk_attribute disk_attr_dev = {
.attr = {.name = "dev", .mode = S_IRUGO },
.show = disk_dev_read
};
static struct attribute * default_attrs[] = {
+ &disk_attr_uevent.attr,
&disk_attr_dev.attr,
&disk_attr_range.attr,
&disk_attr_removable.attr,
.show = diskstats_show
};
-
struct gendisk *alloc_disk(int minors)
{
- struct gendisk *disk = kmalloc(sizeof(struct gendisk), GFP_KERNEL);
+ return alloc_disk_node(minors, -1);
+}
+
+struct gendisk *alloc_disk_node(int minors, int node_id)
+{
+ struct gendisk *disk;
+
+ disk = kmalloc_node(sizeof(struct gendisk), GFP_KERNEL, node_id);
if (disk) {
memset(disk, 0, sizeof(struct gendisk));
if (!init_disk_stats(disk)) {
}
if (minors > 1) {
int size = (minors - 1) * sizeof(struct hd_struct *);
- disk->part = kmalloc(size, GFP_KERNEL);
+ disk->part = kmalloc_node(size, GFP_KERNEL, node_id);
if (!disk->part) {
kfree(disk);
return NULL;
}
EXPORT_SYMBOL(alloc_disk);
+EXPORT_SYMBOL(alloc_disk_node);
struct kobject *get_disk(struct gendisk *disk)
{