函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\linux\page-flags.h Create Date:2022-07-27 06:40:09
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：TestClearPageReadahead

函数原型：static inline __attribute__((__always_inline__)) int TestClearPageReadahead(struct page *page)

返回类型：int

参数：

类型参数名称
struct page *page
367  返回:st_and_clear_bit - Clear a bit and return its old value*@nr: Bit to clear*@addr: Address to count from* This is an atomic fully-ordered operation (implied full memory barrier).
调用者
名称描述
lookup_swap_cacheLookup a swap entry in the swap cache. A found page will be returned* unlocked and with its refcount incremented - we rely on the kernel* lock getting page table operations atomic even if we drop the page* lock before returning.