unmap_mapping

函数名称：map_mapping_range - unmap the portion of all mmaps in the specified* address_space corresponding to the specified byte range in the underlying* file

函数原型：void unmap_mapping_range(struct address_space *mapping, loff_t const holebegin, loff_t const holelen, int even_cows)

返回类型：void

参数：

类型	参数	名称
struct address_space *	mapping
loff_t const	holebegin
loff_t const	holelen
int	even_cows

**调用者**
名称	描述
truncate_pagecache	runcate_pagecache - unmap and remove pagecache that has been truncated@inode: inode@newsize: new file size* inode's new i_size must already be written before truncate_pagecache* is called.* This function should typically be called before the filesystem
truncate_pagecache_range	runcate_pagecache_range - unmap and remove pagecache that is hole-punched@inode: inode@lstart: offset of beginning of hole@lend: offset of last byte of hole This function should typically be called before the filesystem
memory_failure_dev_pagemap
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

函数逻辑报告