buffer_mapped

函数名称：buffer_mapped

函数原型：static inline __attribute__((__always_inline__)) int buffer_mapped(const struct buffer_head *bh)

返回类型：int

参数：

类型	参数	名称
const struct buffer_head *	bh

126

返回:如果__builtin_constant_p( Has a disk mapping )则constant_test_bit(( Has a disk mapping ), ( & buffer state bitmap (see above) ))否则variable_test_bit(( Has a disk mapping ), ( & buffer state bitmap (see above) ))

**调用者**
名称	描述
__generic_block_fiemap	__generic_block_fiemap - FIEMAP for block based inodes (no locking)@inode: the inode to map@fieinfo: the fiemap info struct that will be passed back to userspace@start: where to start mapping in the inode@len: how much space to map*@get_block: the
__find_get_block_slow	Various filesystems appear to want __find_get_block to be non-blocking
init_page_buffers	Initialise the state of a blockdev page's buffers.
clean_bdev_aliases	lean_bdev_aliases: clean a range of buffers in block device@bdev: Block device to clean buffers in@block: Start of a range of blocks to clean@len: Number of blocks to clean We are taking a range of blocks for data and we don't want writeback of any*
__block_write_full_page	While block_write_full_page is writing back the dirty buffers under* the page lock, whoever dirtied the buffers may decide to clean them* again at any time
__block_write_begin_int
block_read_full_page	Generic "read page" function for block devices that have the normal* get_block functionality
nobh_write_begin	On entry, the page is fully not uptodate.* On exit the page is fully uptodate in the areas outside (from,to)* The filesystem needs to handle block truncation upon failure.
nobh_truncate_page
block_truncate_page
submit_bh_wbc
do_direct_IO	Walk the user pages, and the file, mapping blocks to disk and generating* a sequence of (page,offset,len,block) mappings. These mappings are injected* into submit_page_section(), which takes care of the next stage of submission
do_mpage_readpage	This is the worker routine which does all the work of mapping the disk* blocks and constructs largest possible bios, submits them for IO if the* blocks are not contiguous on the disk
__mpage_writepage

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