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 17:54:39
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：soft_offline_in_use_page

函数原型：static int soft_offline_in_use_page(struct page *page, int flags)

返回类型：int

参数：

类型参数名称
struct page *page
intflags
1812  hpage等于compound_head(page)
1814  如果非PageHuge() only returns true for hugetlbfs pages, but not for normal or* transparent huge pages. See the PageTransHuge() documentation for more* details.且PageHuge() only returns true for hugetlbfs pages, but not for* normal or transparent huge pages.* PageTransHuge() returns true for both transparent huge and* hugetlbfs pages, but not normal pages. PageTransHuge() can only be则
1815  lock_page may only be called if we have the page's inode pinned.
1816  如果非PageAnon(page)或此条件成立可能性小(为编译器优化)(split_huge_page(page))则
1817  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.
1818  如果非PageAnon(page)则打印信息("soft offline: %#lx: non anonymous thp\n", page_to_pfn(page))
1820  否则打印信息("soft offline: %#lx: thp split failed\n", page_to_pfn(page))
1822  put_hwpoison_page(page)
1823  返回:负EBUSY
1825  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.
1835  mt等于get_pageblock_migratetype(page)
1836  set_pageblock_migratetype(page, MIGRATE_ISOLATE)
1837  如果PageHuge() only returns true for hugetlbfs pages, but not for normal or* transparent huge pages. See the PageTransHuge() documentation for more* details.则ret等于soft_offline_huge_page(page, flags)
1839  否则ret等于__soft_offline_page(page, flags)
1841  set_pageblock_migratetype(page, mt)
1842  返回:ret
调用者
名称描述
soft_offline_pagesoft_offline_page - Soft offline a page.*@pfn: pfn to soft-offline*@flags: flags. Same as memory_failure().* Returns 0 on success, otherwise negated errno.* Soft offline a page, by migration or invalidation,* without killing anything