函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:block\blk-mq.c Create Date:2022-07-27 18:45:44
Last Modify:2020-03-17 23:18:05 Copyright©Brick
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函数名称：blk_mq_try_issue_list_directly

函数原型：void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx, struct list_head *list)

返回类型：void

参数：

类型参数名称
struct blk_mq_hw_ctx *hctx
struct list_head *list
1867  当非链表为空循环
1869  rq等于list_first_entry - get the first element from a list*@ptr: the list head to take the element from.*@type: the type of the struct this is embedded in.*@member: the name of the list_head within the struct.* Note, that list is expected to be not empty.(list, structrequest, queuelist)
1872  删除链表项并重新初始化
1873  ret等于blk_mq_request_issue_directly(rq, 链表为空)
1874  如果ret不等于BLK_STS_OK则
1875  如果ret恒等于BLK_STS_RESOURCE或ret恒等于BLK_STS_DEV_RESOURCE is returned from the driver to the block layer if* device related resources are unavailable, but the driver can guarantee* that the queue will be rerun in the future once resources become* available again则
1881  blk_mq_end_request(rq, ret)
1890  如果非链表为空且commit_rqs则commit_rqs(hctx)
调用者
名称描述
blk_mq_sched_insert_requests