函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\iov_iter.c Create Date:2022-07-27 07:18:10
Last Modify:2022-05-21 11:43:54 Copyright©Brick
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函数名称：memcpy_from_page

函数原型：static void memcpy_from_page(char *to, struct page *page, size_t offset, size_t len)

返回类型：void

参数：

类型参数名称
char *to
struct page *page
size_toffset
size_tlen
463  from等于kmap_atomic(page)
464  内存复制(to, from + offset, len)
465  Prevent people trying to call kunmap_atomic() as if it were kunmap()* kunmap_atomic() should get the return value of kmap_atomic, not the page.(from)
调用者
名称描述
_copy_from_iter
_copy_from_iter_full
_copy_from_iter_nocache
_copy_from_iter_full_nocache
iov_iter_copy_from_user_atomic