91 		down_write(&ctx->mm->mmap_sem);  in aio_free_ring()
92 		do_munmap(ctx->mm, info->mmap_base, info->mmap_size);  in aio_free_ring()
93 		up_write(&ctx->mm->mmap_sem);  in aio_free_ring()
132 	down_write(&ctx->mm->mmap_sem);  in aio_setup_ring()
137 		up_write(&ctx->mm->mmap_sem);  in aio_setup_ring()
144 	info->nr_pages = get_user_pages(current, ctx->mm,  in aio_setup_ring()
147 	up_write(&ctx->mm->mmap_sem);  in aio_setup_ring()
220 	mmdrop(ctx->mm);  in __put_ioctx()
221 	ctx->mm = NULL;  in __put_ioctx()
241 	struct mm_struct *mm;  in ioctx_alloc()  local
260 	mm = ctx->mm = current->mm;  in ioctx_alloc()
261 	atomic_inc(&mm->mm_count);  in ioctx_alloc()
297 	spin_lock(&mm->ioctx_lock);  in ioctx_alloc()
298 	hlist_add_head_rcu(&ctx->list, &mm->ioctx_list);  in ioctx_alloc()
299 	spin_unlock(&mm->ioctx_lock);  in ioctx_alloc()
302 		ctx, ctx->user_id, current->mm, ctx->ring_info.nr);  in ioctx_alloc()
310 	mmdrop(mm);  in ioctx_alloc()
391 void exit_aio(struct mm_struct *mm)  in exit_aio()  argument
395 	while (!hlist_empty(&mm->ioctx_list)) {  in exit_aio()
396 		ctx = hlist_entry(mm->ioctx_list.first, struct kioctx, list);  in exit_aio()
589 	struct mm_struct *mm = current->mm;  in lookup_ioctx()  local
595 	hlist_for_each_entry_rcu(ctx, n, &mm->ioctx_list, list) {  in lookup_ioctx()
617 static void use_mm(struct mm_struct *mm)  in use_mm()  argument
624 	atomic_inc(&mm->mm_count);  in use_mm()
625 	tsk->mm = mm;  in use_mm()
626 	tsk->active_mm = mm;  in use_mm()
627 	switch_mm(active_mm, mm, tsk);  in use_mm()
641 static void unuse_mm(struct mm_struct *mm)  in unuse_mm()  argument
646 	tsk->mm = NULL;  in unuse_mm()
648 	enter_lazy_tlb(mm, tsk);  in unuse_mm()
877 	struct mm_struct *mm;  in aio_kick_handler()  local
881 	use_mm(ctx->mm);  in aio_kick_handler()
884 	mm = ctx->mm;  in aio_kick_handler()
886  	unuse_mm(mm);  in aio_kick_handler()
1251 	struct mm_struct *mm = current->mm;  in io_destroy()  local
1255 	spin_lock(&mm->ioctx_lock);  in io_destroy()
1259 	spin_unlock(&mm->ioctx_lock);  in io_destroy()