dax_is_pmd

函数名称：dax_is_pmd_entry

函数原型：static unsigned long dax_is_pmd_entry(void *entry)

返回类型：unsigned long

参数：

类型	参数	名称
void *	entry

**调用者**
名称	描述
dax_entry_waitqueue
dax_entry_size
grab_mapping_entry	Find page cache entry at given index. If it is a DAX entry, return it* with the entry locked. If the page cache doesn't contain an entry at* that index, add a locked empty entry.* When requesting an entry with size DAX_PMD, grab_mapping_entry() will
dax_insert_entry	By this point grab_mapping_entry() has ensured that we have a locked entry* of the appropriate size so we don't have to worry about downgrading PMDs to* PTEs

函数逻辑报告