On Fri, Feb 28, 2020 at 11:38:18AM +0800, Huang, Ying wrote: >From: Huang Ying <ying.huang@xxxxxxxxx> > >Now !PageSwapBacked() is used as the flag for the pages freed lazily >via MADV_FREE. This isn't obvious enough. So Dave suggested to add a >new page flag for that to improve the code readability. I am confused with the usage of PageSwapBacked(). Previously I thought this flag means the page is swapin, set in swapin_readahead(). While I found page_add_new_anon_rmap() would set it too. This means every anon page would carry this flag. Then what is this flag means? -- Wei Yang Help you, Help me
