函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\iomap\direct-io.c Create Date:2022-07-29 11:07:43
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：iomap_dio_zero

函数原型：static void iomap_dio_zero(struct iomap_dio *dio, struct iomap *iomap, loff_t pos, unsigned len)

返回类型：void

参数：

类型参数名称
struct iomap_dio *dio
struct iomap *iomap
loff_tpos
unsignedlen
181  page等于ZERO_PAGE(0)
182  flags等于REQ_SYNC按位或REQ_IDLE
185  bio等于bio_alloc(GFP_KERNEL, 1)
186  bio_set_dev(bio, block device for I/O )
187  device address in 512 byte sectors 等于iomap_sector(iomap, pos)
188  bi_private等于dio
189  bi_end_io等于iomap_dio_bio_end_io
191  get_page(page)
192  __bio_add_page(bio, page, len, 0)
193  bsolete, don't use in new code
194  iomap_dio_submit_bio(dio, iomap, bio)
调用者
名称描述
iomap_dio_bio_actor