mapping_needs_writeback

函数名称：Returns true if writeback might be needed or already in progress.

函数原型：static bool mapping_needs_writeback(struct address_space *mapping)

返回类型：bool

参数：

类型	参数	名称
struct address_space *	mapping

**调用者**
名称	描述
filemap_write_and_wait
filemap_write_and_wait_range	lemap_write_and_wait_range - write out & wait on a file range@mapping: the address_space for the pages@lstart: offset in bytes where the range starts*@lend: offset in bytes where the range ends (inclusive)
file_write_and_wait_range	le_write_and_wait_range - write out & wait on a file range@file: file pointing to address_space with pages@lstart: offset in bytes where the range starts*@lend: offset in bytes where the range ends (inclusive)

函数逻辑报告