blk_mq_do_dispatch

函数名称：Only SCSI implements .get_budget and .put_budget, and SCSI restarts* its queue by itself in its completion handler, so we don't need to* restart queue if .get_budget() returns BLK_STS_NO_RESOURCE.

函数原型：static void blk_mq_do_dispatch_sched(struct blk_mq_hw_ctx *hctx)

返回类型：void

参数：

类型	参数	名称
struct blk_mq_hw_ctx *	hctx

q等于@queue: Pointer to the request queue that owns this hardware context.

e等于elevator

LIST_HEAD(rq_list)

循环

如果has_work且非has_work(hctx)则退出

100

如果非blk_mq_get_dispatch_budget(hctx)则退出

103

rq等于dispatch_request(hctx)

104

如果非rq则

105

blk_mq_put_dispatch_budget(hctx)

106

退出

114

添加链表项

115

当Returns true if we did some work AND can potentially do more.循环

**调用者**
名称	描述
blk_mq_sched_dispatch_requests

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