dissolve_free_huge

函数名称：Dissolve a given free hugepage into free buddy pages. This function does* nothing for in-use hugepages and non-hugepages.* This function returns values like below:* -EBUSY: failed to dissolved free hugepages or the hugepage is in-use

函数原型：int dissolve_free_huge_page(struct page *page)

返回类型：int

参数：

类型	参数	名称
struct page *	page

1484

rc等于负EBUSY

1487

如果非PageHuge() only returns true for hugetlbfs pages, but not for normal or* transparent huge pages. See the PageTransHuge() documentation for more* details.则返回:0

1490

加自旋锁

1491

如果非PageHuge() only returns true for hugetlbfs pages, but not for normal or* transparent huge pages. See the PageTransHuge() documentation for more* details.则

1492

rc等于0

1493

转到:out

1496

如果非page_count(page)则

1497

head等于compound_head(page)

1498

h等于page_hstate(head)

1499

nid等于page_to_nid(head)

1500

如果free_huge_pages减resv_huge_pages恒等于0则转到:out

1506

如果PageHWPoison(head)且page不等于head则

1507

SetPageHWPoison(page)

1508

ClearPageHWPoison(head)

1510

删除链表项

1511

free_huge_pages自减

1512

free_huge_pages_node[nid]自减

1513

max_huge_pages自减

1514

update_and_free_page(h, head)

1515

rc等于0

1517

out :

1518

自旋锁解锁

1519

返回:rc

**调用者**
名称	描述
dissolve_free_huge_pages	Dissolve free hugepages in a given pfn range
me_huge_page	Huge pages. Needs work.* Issues:* - Error on hugepage is contained in hugepage unit (not in raw page unit.)* To narrow down kill region to one page, we need to break up pmd.
memory_failure_hugetlb
soft_offline_huge_page
soft_offline_free_page

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告