[suvrojit]

ULK by Bovet Cessati is the book u should start reading Sankalp

On Tue, Mar 17, 2020, 2:44 PM Valdis Klētnieks <valdis.kletnieks at vt.edu>
wrote:

> On Tue, 17 Mar 2020 04:37:58 +0530, Sankalp Bhardwaj said:
>
> > Where to get started?? I am interested in understanding how the
> > kernel works but have no prior knowledge... Please help!!
>
> A good place to start is to realize that the answers often depend on what
> the
> question is - and there's usually a difference between the question that is
> asked, and the question that the person needs the answer for.  You probably
> want to read this:
>
>
> https://lists.kernelnewbies.org/pipermail/kernelnewbies/2017-April/017765.html
>
> Something that you'll need is a good understanding of operating system
> concepts. Almost all modern computer systems have some idea of basic
> concepts
> such as processes, files, a directory structure, security and permissions,
> scheduling, locking, and so on.  And for most of these, there is more than
> one
> way to accomplish the goal.
>
> So two books that are useful to read for a compare-and-contrast view are
> Bach's
> book on the System V kernel, and McKusic's book on the BSD kernel - both go
> into details of *why* some things are done they are.  It's really helpful
> to
> see stuff like "We need to lock this inode while we do X, because otherwise
> another thread could concurrently do Y, and then Bad Thing Z will happen".
>
> Of course, a Linux filesystem that does things differently won't have the
> same
> exact issues, but understanding the *sort* of things that break when you
> screw
> up your locking is quite the useful info, especially if most of your
> coding has
> been in userspace where single-threaded is common and libraries did their
> own
> locking when needed.
>
> I admit that I also learned a bunch from Tanenbaum's "Modern Operating
> Systems", but that was a long long time ago in a galaxy far far away, and I
> have no idea what the cool kids are reading instead these days...
>
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