函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\vmscan.c Create Date:2022-07-27 15:42:15
Last Modify:2022-05-23 13:41:30 Copyright©Brick
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函数名称：This moves pages from @list to corresponding LRU list.* We move them the other way if the page is referenced by one or more* processes, from rmap.* If the pages are mostly unmapped, the processing is fast and it is

函数原型：static unsigned __attribute__((__noinline__))move_pages_to_lru(struct lruvec *lruvec, struct list_head *list)

返回类型：unsigned

参数：

类型参数名称
struct lruvec *lruvec
struct list_head *list
1846  pgdat等于lruvec_pgdat(lruvec)
1847  nr_moved等于0
1848  LIST_HEAD(pages_to_free)
1852  当非链表为空循环
1853  page等于lru_to_page(list)
1854  VM_BUG_ON_PAGE(PageLRU(page), page)
1855  如果此条件成立可能性小(为编译器优化)(!page_evictable - test whether a page is evictable*@page: the page to test* Test whether page is evictable--i)则
1856  删除链表项
1857  spin_unlock_irq( & Write-intensive fields used by page reclaim )
1858  putback_lru_page - put previously isolated page onto appropriate LRU list*@page: page to be put back to appropriate lru list* Add previously isolated @page to appropriate LRU list.* Page may still be unevictable for other reasons.
1859  spin_lock_irq( & Write-intensive fields used by page reclaim )
1860  继续下一循环
1862  lruvec等于mem_cgroup_page_lruvec(page, pgdat)
1864  SetPageLRU(page)
1865  lru等于page_lru - which LRU list should a page be on?*@page: the page to test* Returns the LRU list a page should be on, as an index* into the array of LRU lists.
1867  nr_pages等于hpage_nr_pages(page)
1868  update_lru_size(lruvec, lru, page_zonenum(page), nr_pages)
1869  链表项移动到头部
1871  如果Drop a ref, return true if the refcount fell to zero (the page has no users)则
1872  __ClearPageLRU(page)
1873  __ClearPageActive(page)
1874  del_page_from_lru_list(page, lruvec, lru)
1876  如果此条件成立可能性小(为编译器优化)(PageCompound(page))则
1880  否则添加链表项
1882  否则
1883  nr_moved加等于nr_pages
1890  为栈加入第二个链表项
1892  返回:nr_moved
调用者
名称描述
shrink_inactive_listshrink_inactive_list() is a helper for shrink_node(). It returns the number* of reclaimed pages
shrink_active_list