rcu_read_unlock();
}
-/* Called by the exitting task */
+/* Called by the exiting task */
void exit_io_context(struct task_struct *task)
{
struct io_context *ioc;
task->io_context = NULL;
task_unlock(task);
- if (atomic_dec_and_test(&ioc->nr_tasks)) {
+ if (atomic_dec_and_test(&ioc->nr_tasks))
cfq_exit(ioc);
- }
put_io_context(ioc);
}
}
EXPORT_SYMBOL(get_io_context);
-void copy_io_context(struct io_context **pdst, struct io_context **psrc)
-{
- struct io_context *src = *psrc;
- struct io_context *dst = *pdst;
-
- if (src) {
- BUG_ON(atomic_long_read(&src->refcount) == 0);
- atomic_long_inc(&src->refcount);
- put_io_context(dst);
- *pdst = src;
- }
-}
-EXPORT_SYMBOL(copy_io_context);
-
static int __init blk_ioc_init(void)
{
iocontext_cachep = kmem_cache_create("blkdev_ioc",