dax_is_locked

函数名称：dax_is_locked

函数原型：static bool dax_is_locked(void *entry)

返回类型：bool

参数：

类型	参数	名称
void *	entry

95

返回:xa_to_value() - Get value stored in an XArray entry.*@entry: XArray entry.* Context: Any context.* Return: The value stored in the XArray entry.按位与DAX_LOCKED

**调用者**
名称	描述
get_unlocked_entry	Look up entry in page cache, wait for it to become unlocked if it* is a DAX entry and return it. The caller must subsequently call* put_unlocked_entry() if it did not lock the entry or dax_unlock_entry()* if it did
dax_unlock_entry	We used the xa_state to get the entry, but then we locked the entry and* dropped the xa_lock, so we know the xa_state is stale and must be reset* before use.
dax_lock_page	dax_lock_mapping_entry - Lock the DAX entry corresponding to a page@page: The page whose entry we want to lock Context: Process context.* Return: A cookie to pass to dax_unlock_page() or 0 if the entry could* not be locked.
dax_layout_busy_page	dax_layout_busy_page - find first pinned page in @mapping@mapping: address space to scan for a page with ref count > 1 DAX requires ZONE_DEVICE mapped pages. These pages are never* 'onlined' to the page allocator so they are considered idle when
dax_writeback_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