buffer_new

函数名称：buffer_new

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

返回类型：int

参数：

类型	参数	名称
const struct buffer_head *	bh

127

返回:如果__builtin_constant_p( Disk mapping was newly created by get_block )则constant_test_bit(( Disk mapping was newly created by get_block ), ( & buffer state bitmap (see above) ))否则variable_test_bit(( Disk mapping was newly created by get_block ), ( & buffer state bitmap (see above) ))

**调用者**
名称	描述
__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
page_zero_new_buffers	If a page has any new buffers, zero them out here, and mark them uptodate* and dirty so they'll be written out (in order to prevent uninitialised* block data from leaking). And clear the new bit.
__block_write_begin_int
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.
dio_zero_block	If we are not writing the entire block and get_block() allocated* the block for us, we need to fill-in the unused portion of the* block with zeros
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
__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