函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:block\blk-merge.c Create Date:2022-07-27 18:41:12
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：__blk_bvec_map_sg

函数原型：static inline int __blk_bvec_map_sg(struct bio_vec bv, struct scatterlist *sglist, struct scatterlist **sg)

返回类型：int

参数：

类型参数名称
struct bio_vecbv
struct scatterlist *sglist
struct scatterlist **sg
455  sg等于blk_next_sg(sg, sglist)
456  sg_set_page - Set sg entry to point at given page*@sg: SG entry*@page: The page*@len: Length of data*@offset: Offset into page* Description:* Use this function to set an sg entry pointing at a page, never assign* the page directly
457  返回:1
调用者
名称描述
__blk_bios_map_sg
blk_rq_map_sgmap a request to scatterlist, return number of sg entries setup. Caller* must make sure sg can hold rq->nr_phys_segments entries