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[Akash Sarda]

Awesome, thanks for the info!

On Wed, Nov 20, 2019 at 1:50 AM Valdis Klētnieks
<valdis.kletnieks at vt.edu> wrote:
>
> On Tue, 19 Nov 2019 17:03:37 +0530, Akash Sarda said:
> > Hi,
> >
> > My name is Akash, and I want to start with OS development..
> > I am interested in memory management, and would like to know if anyone
> > has a newbie project in their mind..
>
> Unfortunately, there's probably not much good newbie work in memory management,
> because a whole lot of experts have already gone over it and make it work
> reasonably well on *literally* everything from light bulbs to supercomputers.
>
> I'm not saying there's nothing in there for a newbie to do. There's probably
> still tons of minor enhancements that can be done, but they're going to require
> that you actually understand the code at a fairly deep level. For example,
> here's a recent commit:
>
> commit abc04c84ae77fdbce2c42c52e4059d327e54c7ab
> Author: Minchan Kim <minchan at google.com>
> Date:   Wed Nov 6 16:06:48 2019 +1100
>
>     mm/page_io.c: annotate refault stalls from swap_readpage
>
>     If a block device supports rw_page operation, it doesn't submit bios so
>     the annotation in submit_bio() for refault stall doesn't work.  It happens
>     with zram in android, especially swap read path which could consume CPU
>     cycle for decompress.  It is also a problem for zswap which uses
>     frontswap.
>
>     Annotate swap_readpage() to account the synchronous IO overhead to prevent
>     underreport memory pressure.
>
> The description of what was changed and why runs to just under 500 characters,
> while the actual change is well under 200.
>
> I'm assuming you've already cloned either Linus's git tree or one or more of
> the development trees.   If so, you can do a 'git log mm/' and see what work
> has been recently done, so you know what sort of learning curve you're
> going to have.
>
> You definitely need to read the various files under Documentation/process
> and you probably should go read this as well:
>
> https://lists.kernelnewbies.org/pipermail/kernelnewbies/2017-April/017765.html