#include "blk.h"
static DEFINE_MUTEX(block_class_lock);
-#ifndef CONFIG_SYSFS_DEPRECATED
struct kobject *block_depr;
-#endif
/* for extended dynamic devt allocation, currently only one major is used */
#define MAX_EXT_DEVT (1 << MINORBITS)
register_blkdev(BLOCK_EXT_MAJOR, "blkext");
-#ifndef CONFIG_SYSFS_DEPRECATED
/* create top-level block dir */
- block_depr = kobject_create_and_add("block", NULL);
-#endif
+ if (!sysfs_deprecated)
+ block_depr = kobject_create_and_add("block", NULL);
return 0;
}
{
struct disk_part_tbl *ptbl =
container_of(head, struct disk_part_tbl, rcu_head);
- struct gendisk *disk = ptbl->disk;
- struct request_queue *q = disk->queue;
- unsigned long flags;
kfree(ptbl);
-
- spin_lock_irqsave(q->queue_lock, flags);
- elv_quiesce_end(q);
- spin_unlock_irqrestore(q->queue_lock, flags);
}
/**
struct disk_part_tbl *new_ptbl)
{
struct disk_part_tbl *old_ptbl = disk->part_tbl;
- struct request_queue *q = disk->queue;
rcu_assign_pointer(disk->part_tbl, new_ptbl);
if (old_ptbl) {
rcu_assign_pointer(old_ptbl->last_lookup, NULL);
-
- spin_lock_irq(q->queue_lock);
- elv_quiesce_start(q);
- spin_unlock_irq(q->queue_lock);
-
call_rcu(&old_ptbl->rcu_head, disk_free_ptbl_rcu_cb);
}
}
return -ENOMEM;
new_ptbl->len = target;
- new_ptbl->disk = disk;
for (i = 0; i < len; i++)
rcu_assign_pointer(new_ptbl->part[i], old_ptbl->part[i]);