Messages in this thread | | | Date | Mon, 08 Apr 2013 09:51:35 +0800 | From | Simon Jeons <> | Subject | Re: [RFC] mm: remove swapcache page early |
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On 04/08/2013 09:48 AM, Minchan Kim wrote: > Hello Simon, > > On Sun, Apr 07, 2013 at 03:26:12PM +0800, Simon Jeons wrote: >> Ping Minchan. >> On 04/02/2013 09:40 PM, Simon Jeons wrote: >>> Hi Hugh, >>> On 03/28/2013 05:41 AM, Hugh Dickins wrote: >>>> On Wed, 27 Mar 2013, Minchan Kim wrote: >>>> >>>>> Swap subsystem does lazy swap slot free with expecting the page >>>>> would be swapped out again so we can't avoid unnecessary write. >>>> so we can avoid unnecessary write. >>> If page can be swap out again, which codes can avoid unnecessary >>> write? Could you point out to me? Thanks in advance. ;-) > Look at shrink_page_list. > > 1) PageAnon(page) && !PageSwapCache() > 2) add_to_swap's SetPageDirty > 3) __remove_mapping > > P.S) > It seems you are misunderstanding. Here isn't proper place to ask a > question for your understanding the code. As I know, there are some > project(ex, kernelnewbies) and books for study and sharing the > knowledge linux kernel. > > I recommend Mel's "Understand the Linux Virtual Memory Manager". > It's rather outdated but will be very helpful to understand VM of > linux kernel. You can get it freely but I hope you pay for. > So if author become a billionaire by selecting best book in Amazon, > he might print out second edition which covers all of new VM features > and may solve all of you curiosity. > > It would be a another method to contribute open source project. :) > > I believe you talented developers can catch it up with reading the > code enoughly and find more bonus knowledge. I think it's why our senior > developers yell out RTFM and I follow them.
What's the meaning of RTFM?
> > Cheers! > >
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