compact_unlock_should

函数名称：Compaction requires the taking of some coarse locks that are potentially* very heavily contended. The lock should be periodically unlocked to avoid* having disabled IRQs for a long time, even when there is nobody waiting on* the lock

函数原型：static bool compact_unlock_should_abort(spinlock_t *lock, unsigned long flags, bool *locked, struct compact_control *cc)

返回类型：bool

参数：

类型	参数	名称
spinlock_t *	lock
unsigned long	flags
bool *	locked
struct compact_control *	cc

515

如果locked则

516

spin_unlock_irqrestore(lock, flags)

517

* locked = false

520

如果fatal_signal_pending(当前进程)则

521

Signal lock or sched contention = true

522

返回:true

525

cond_resched()

527

返回:false

**调用者**
名称	描述
isolate_freepages_block	Isolate free pages onto a private freelist. If @strict is true, will abort* returning 0 on any invalid PFNs or non-free pages inside of the pageblock* (even though it may still end up isolating some pages).
isolate_migratepages_block	solate_migratepages_block() - isolate all migrate-able pages within* a single pageblock@cc: Compaction control structure.@low_pfn: The first PFN to isolate*@end_pfn: The one-past-the-last PFN to isolate, within same pageblock

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