函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\read_write.c Create Date:2022-07-29 10:31:32
Last Modify:2020-03-18 10:18:51 Copyright©Brick
首页 函数Tree
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函数名称：Unlock two pages, being careful not to unlock the same page twice.

函数原型：static void vfs_unlock_two_pages(struct page *page1, struct page *page2)

返回类型：void

参数：

类型参数名称
struct page *page1
struct page *page2
1845  lock_page - unlock a locked page*@page: the page* Unlocks the page and wakes up sleepers in ___wait_on_page_locked().* Also wakes sleepers in wait_on_page_writeback() because the wakeup* mechanism between PageLocked pages and PageWriteback pages is shared.
1846  如果page1不等于page2则lock_page - unlock a locked page*@page: the page* Unlocks the page and wakes up sleepers in ___wait_on_page_locked().* Also wakes sleepers in wait_on_page_writeback() because the wakeup* mechanism between PageLocked pages and PageWriteback pages is shared.
调用者
名称描述
vfs_dedupe_file_range_compareCompare extents of two files to see if they are the same.* Caller must have locked both inodes to prevent write races.