在Linux内核中,blk_end_request函数的具体实现会根据不同的块设备驱动程序而有所不同。通常情况下,blk_end_request函数会检查请求的状态,如果请求成功完成,则会向请求方返回成功的结果;如果请求失败或发生错误,则会向请求方返回失败的结果,并可能会进行错误处理或重试操作。 在使用Linux系统时,我们可能会遇到一些与bl...
blk_end_request 返回错误 在进行网络编程过程中,有些函数会以阻塞的方式执行,此时就不能做其他事,十分没有效率。C#提供了两种异步网络编程的方法来解决这个问题。一种方法是采用Asynchronous Sockets, 一种方法是调用非阻塞的Socket Methods。 一、Asynchronous Sockets的方法 Socket类的很多连接,发送,接收函数都有相应...
> 3/7: convert normal drivers to use blk_end_request() > 4/7: convert odd drivers like cciss/cpqarray/xsysace to use > blk_end_request() > 5/7: convert ide-cd (cdrom_newpc_intr) to use blk_end_request() > 6/7: remove/unexport no longer needed end_that_request_* > 7/7...
spin_lock_irqsave(q->queue_lock, flags); - if (!end_that_request_first(req, uptodate, req->nr_sectors)) { - end_that_request_last(req, uptodate); - } + __blk_end_request(req, error, req->nr_sectors << 9); spin_unlock_irqrestore(q->queue_lock, flags); } - To unsubscribe...
In case of shared tags and none io sched, batched completion still may be run into, and hctx->nr_active is accounted when getting driver tag, so it has to be updated in blk_mq_end_request_batch(). Otherwise, hctx->nr_active may become same with queue depth, then hctx_may_queue...
1 change: 1 addition & 0 deletions1block/blk-flush.c Original file line numberDiff line numberDiff line change Expand Up@@ -225,6 +225,7 @@ static void flush_end_io(struct request *flush_rq, blk_status_t error) /* release the tag's ownership to the req cloned from */ ...
blk_end_request 返回错误 request是一个非常重要的函数,它负责处理块I/O请求的完成和回复。在Linux内核中,块I/O请求是由块设备驱动程序接收并处理的,它们包括从硬盘读取数据或向硬盘写入数据等操作。request
+ if (blk_end_request(rq, (rq->errors == 0) ? 0 : -EIO, blk_rq_bytes(rq))) + BUG(); + spin_lock_irqsave(&h->lock, flags); - end_that_request_last(rq, (rq->errors == 0)); cmd_free(h, cmd, 1); cciss_check_queues(h); ...
> blk_end_request takes 'error' as an argument instead of 'uptodate', > which current end_that_request_* take. > The meanings of values are below and the value is used when bio is > completed. > 0 : success > < 0 : error ...
Use join() to wait thread end while destroying KernelDevice is safer, it can ensures that resource releases are sequential. Contribution Guidelines To sign and title your commits, please refer t...