函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\memory-failure.c Create Date:2022-07-27 17:53:30
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：truncate_error_page

函数原型：static int truncate_error_page(struct page *p, unsigned long pfn, struct address_space *mapping)

返回类型：int

参数：

类型参数名称
struct page *p
unsigned longpfn
struct address_space *mapping
582  ret等于MF_FAILED
584  如果error_remove_page则
585  err等于error_remove_page(mapping, p)
587  如果err不等于0则
588  打印信息("Memory failure: %#lx: Failed to punch page: %d\n", pfn, err)
590  否则如果页面私有占用且非ry_to_release_page() - release old fs-specific metadata on a page*@page: the page which the kernel is trying to free*@gfp_mask: memory allocation flags (and I/O mode)* The address_space is to try to release any data against the page则
592  打印信息("Memory failure: %#lx: failed to release buffers\n", pfn)
594  否则
595  ret等于MF_RECOVERED
597  否则
602  如果Safely invalidate one page from its pagecache mapping.* It only drops clean, unused pages. The page must be locked.* Returns 1 if the page is successfully invalidated, otherwise 0.则ret等于MF_RECOVERED
604  否则打印信息("Memory failure: %#lx: Failed to invalidate\n", pfn)
609  返回:ret
调用者
名称描述
me_pagecache_cleanClean (or cleaned) page cache page.
me_huge_pageHuge pages. Needs work.* Issues:* - Error on hugepage is contained in hugepage unit (not in raw page unit.)* To narrow down kill region to one page, we need to break up pmd.