函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\iomap\buffered-io.c Create Date:2022-07-29 11:07:19
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：iomap_read_page_sync

函数原型：static int iomap_read_page_sync(loff_t block_start, struct page *page, unsigned poff, unsigned plen, struct iomap *iomap)

返回类型：int

参数：

类型参数名称
loff_tblock_start
struct page *page
unsignedpoff
unsignedplen
struct iomap *iomap
590  bio_init( & bio, & bvec, 1)
591  bottom bits req flags, * top bits REQ_OP. Use * accessors.等于REQ_OP_READ
592  device address in 512 byte sectors 等于iomap_sector(iomap, block_start)
593  bio_set_dev( & bio, block device for I/O )
594  __bio_add_page( & bio, page, plen, poff)
595  返回:submit_bio_wait( & bio)
调用者
名称描述
__iomap_write_begin