page_ref_count

函数名称：page_ref_count

函数原型：static inline int page_ref_count(struct page *page)

返回类型：int

参数：

类型	参数	名称
struct page *	page

67

返回:atomic_read( & Usage count. *DO NOT USE DIRECTLY*. See page_ref.h )

**调用者**
名称	描述
ring_buffer_free_read_page	g_buffer_free_read_page - free an allocated read page@buffer: the buffer the page was allocate for@cpu: the cpu buffer the page came from@data: the page to free Free a page allocated from ring_buffer_alloc_read_page.
__dump_page
page_expected_state	A bad page could be due to a number of fields. Instead of multiple branches,* try and check multiple fields with one check. The caller must do a detailed* check if necessary.
free_pages_check_bad
check_new_page_bad
__page_frag_cache_drain
has_unmovable_pages	This function checks whether pageblock includes unmovable pages or not.* If @count is not zero, it is okay to include less @count unmovable pages* PageLRU check without isolation or lru_lock could race so that
dax_disassociate_entry
dax_busy_page
put_page_testzero	Drop a ref, return true if the refcount fell to zero (the page has no users)
try_get_page
set_page_refcounted	Turn a non-refcounted page (->_refcount == 0) into refcounted with* a count of one.

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