linux-master/mm/balloon_compaction.c

14 static void balloon_page_enqueue_one(struct balloon_dev_info *b_dev_info,
24 	balloon_page_insert(b_dev_info, page);
32  * @b_dev_info: balloon device descriptor where we will insert a new page to
40 size_t balloon_page_list_enqueue(struct balloon_dev_info *b_dev_info,
47 	spin_lock_irqsave(&b_dev_info->pages_lock, flags);
50 		balloon_page_enqueue_one(b_dev_info, page);
53 	spin_unlock_irqrestore(&b_dev_info->pages_lock, flags);
61  * @b_dev_info: balloon device descriptor where we will grab a page from.
76 size_t balloon_page_list_dequeue(struct balloon_dev_info *b_dev_info,
83 	spin_lock_irqsave(&b_dev_info->pages_lock, flags);
84 	list_for_each_entry_safe(page, tmp, &b_dev_info->pages, lru) {
108 	spin_unlock_irqrestore(&b_dev_info->pages_lock, flags);
136  * @b_dev_info: balloon device descriptor where we will insert a new page
146 void balloon_page_enqueue(struct balloon_dev_info *b_dev_info,
151 	spin_lock_irqsave(&b_dev_info->pages_lock, flags);
152 	balloon_page_enqueue_one(b_dev_info, page);
153 	spin_unlock_irqrestore(&b_dev_info->pages_lock, flags);
160  * @b_dev_info: balloon device descriptor where we will grab a page from.
177 struct page *balloon_page_dequeue(struct balloon_dev_info *b_dev_info)
183 	n_pages = balloon_page_list_dequeue(b_dev_info, &pages, 1);
193 		spin_lock_irqsave(&b_dev_info->pages_lock, flags);
194 		if (unlikely(list_empty(&b_dev_info->pages) &&
195 			     !b_dev_info->isolated_pages))
197 		spin_unlock_irqrestore(&b_dev_info->pages_lock, flags);
209 	struct balloon_dev_info *b_dev_info = balloon_page_device(page);
212 	spin_lock_irqsave(&b_dev_info->pages_lock, flags);
214 	b_dev_info->isolated_pages++;
215 	spin_unlock_irqrestore(&b_dev_info->pages_lock, flags);
222 	struct balloon_dev_info *b_dev_info = balloon_page_device(page);
225 	spin_lock_irqsave(&b_dev_info->pages_lock, flags);
226 	list_add(&page->lru, &b_dev_info->pages);
227 	b_dev_info->isolated_pages--;
228 	spin_unlock_irqrestore(&b_dev_info->pages_lock, flags);