file_check_and_advance_wb

函数名称：le_check_and_advance_wb_err - report wb error (if any) that was previously* and advance wb_err to current one*@file: struct file on which the error is being reported* When userland calls fsync (or something like nfsd does the equivalent), we* want to

函数原型：int file_check_and_advance_wb_err(struct file *file)

返回类型：int

参数：

类型	参数	名称
struct file *	file

734

err等于0

735

old等于READ_ONCE(f_wb_err)

736

mapping等于f_mapping

739

如果seq_check() - Has an error occurred since a particular sample point?*@eseq: Pointer to errseq_t value to be checked.*@since: Previously-sampled errseq_t from which to check.* Grab the value that eseq points to, and see if it has changed @since则

741

加自旋锁

742

old等于f_wb_err

743

err等于seq_check_and_advance() - Check an errseq_t and advance to current value

745

trace_file_check_and_advance_wb_err(file, old)

746

自旋锁解锁

754

lear_bit - Clears a bit in memory*@nr: Bit to clear*@addr: Address to start counting from* This is a relaxed atomic operation (no implied memory barriers).

755

lear_bit - Clears a bit in memory*@nr: Bit to clear*@addr: Address to start counting from* This is a relaxed atomic operation (no implied memory barriers).

756

返回:err

**调用者**
名称	描述
file_fdatawait_range	le_fdatawait_range - wait for writeback to complete@file: file pointing to address space structure to wait for@start_byte: offset in bytes where the range starts@end_byte: offset in bytes where the range ends (inclusive) Walk the list of
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)
__generic_file_fsync	__generic_file_fsync - generic fsync implementation for simple filesystems@file: file to synchronize@start: start offset in bytes@end: end offset in bytes (inclusive)@datasync: only synchronize essential metadata if true* This is a generic

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

函数逻辑报告