函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\direct-io.c Create Date:2022-07-29 10:46:32
Last Modify:2020-03-12 14:18:49 Copyright©Brick
首页 函数Tree
注解内核,赢得工具下载SCCTEnglish

函数名称：dio_bio_alloc

函数原型：static inline void dio_bio_alloc(struct dio *dio, struct dio_submit *sdio, struct block_device *bdev, sector_t first_sector, int nr_vecs)

返回类型：void

参数：

类型参数名称
struct dio *dio
struct dio_submit *sdio
struct block_device *bdev
sector_tfirst_sector
intnr_vecs
419  bio等于bio_alloc(GFP_KERNEL, nr_vecs)
421  bio_set_dev(bio, bdev)
422  device address in 512 byte sectors 等于first_sector
423  bsolete, don't use in new code
424  如果s IO async ? 则bi_end_io等于Asynchronous IO callback.
426  否则bi_end_io等于The BIO completion handler simply queues the BIO up for the process-context* handler.* During I/O bi_private points at the dio. After I/O, bi_private is used to* implement a singly-linked list of completed BIOs, at dio->bio_list.
429  bi_write_hint等于ki_hint
431  under assembly 等于bio
432  current first logical block in bio 等于Offset in file
调用者
名称描述
dio_new_bioThere is no bio. Make one now.