lock_buffer

函数名称：lock_buffer

函数原型：static inline void lock_buffer(struct buffer_head *bh)

返回类型：void

参数：

类型	参数	名称
struct buffer_head *	bh

364

365

如果非trylock_buffer(bh)则__lock_buffer(bh)

**调用者**
名称	描述
buffer_migrate_lock_buffers	Returns true if all buffers are successfully locked
__bread_slow
discard_buffer
__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_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.
write_dirty_buffer
__sync_dirty_buffer	For a data-integrity writeout, we need to wait upon any in-progress I/O* and then start new I/O and then wait upon it. The caller must have a ref on* the buffer_head.
bh_uptodate_or_lock	h_uptodate_or_lock - Test whether the buffer is uptodate@bh: struct buffer_head Return true if the buffer is up-to-date and false,* with the buffer locked, if not.

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