Re: Reiser4 Upstream Git Repositories on GitHub

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On 2016-09-27 at 23:47 +0200, Edward Shishkin wrote:
> 
> On 09/27/2016 08:36 PM, Ivan Shapovalov wrote:
> > 
> > On 2016-09-27 at 16:13 +0200, Edward Shishkin wrote:
> > > 
> > > On 09/27/2016 04:43 AM, Ivan Shapovalov wrote:
> > > > 
> > > > On 2016-09-27 at 00:37 +0200, Edward Shishkin wrote:
> > > > > 
> > > > > On 09/27/2016 12:05 AM, Ivan Shapovalov wrote:
> > > > > > 
> > > > > > On 2016-09-24 at 22:16 +0200, Edward Shishkin wrote:
> > > > > > > 
> > > > > > > Hello everyone,
> > > > > > > 
> > > > > > > I have set up the updated Namesys repositories at my
> > > > > > > Github
> > > > > > > page.
> > > > > > > Those repositories are supposed to contain the latest
> > > > > > > updates
> > > > > > > in
> > > > > > > the (stable) master branch and in other (experimental)
> > > > > > > branches
> > > > > > > that
> > > > > > > I'll announce.
> > > > > > > 
> > > > > > > 1) https://github.com/edward6/reiser4
> > > > > > > 
> > > > > > > This is a "standalone" reiser4 tree, which doesn't
> > > > > > > include
> > > > > > > specific
> > > > > > > changes of Linux kernel needed for reiser4 port. Such
> > > > > > > changes
> > > > > > > can
> > > > > > > be
> > > > > > > found at the project's page on Sourceforge:
> > > > > > > https://sourceforge.net/projects/reiser4/
> > > > > > > 
> > > > > > > An example of work with the standalone reiser4 tree:
> > > > > > > 
> > > > > > > . Patch the respective kernel with the latest available
> > > > > > > stuff
> > > > > > > from
> > > > > > >       Sourceforge;
> > > > > > > . cd to the "fs" directory;
> > > > > > > . delete the directory reiser4;
> > > > > > > . instead of the deleted stuff clone the standalone
> > > > > > > reiser4
> > > > > > >       repository from Github;
> > > > > > > . build and install as usual.
> > > > > > > 
> > > > > > > 2) Libaal and Reiser4progs:
> > > > > > > 
> > > > > > > https://github.com/edward6/libaal
> > > > > > > https://github.com/edward6/reiser4progs
> > > > > > > 
> > > > > > > Before building Libaal and Reiser4progs execute the
> > > > > > > ./prepare
> > > > > > > script,
> > > > > > > which will create files needed for build process.
> > > > > > > 
> > > > > > > Thanks,
> > > > > > > Edward.
> > > > > > Wow, finally.
> > > > > > 
> > > > > > Maybe we could avoid that "all changes for 10 years"
> > > > > > commit?
> > > > > Hi Ivan,
> > > > > Sorry, don't have a time to granulate it.
> > > > > 
> > > > > > 
> > > > > > I tried to keep track of all patches since 3.2...
> > > > > There will be "all changes for 6 years" commit.
> > > > > Is it much better?
> > > > So well, I finished splitting off all known diffs from that big
> > > > commit.
> > > > Tt was 12k(+)/8k(-), now it is 7k(+)/7k(-).
> > > > 
> > > > The updated branch is here: https://github.com/intelfx/reiser4
> > > > (unfortunately, not fast-forward).
> > > > 
> > > > Moreover, my tree has accumulated quite a few differences from
> > > > your
> > > > one. I've dropped trivial discrepancies (comments, formatting
> > > > etc.)
> > > > and put the larger ones in separate branches:
> > > > 
> > > > 1. https://github.com/intelfx/reiser4/tree/differences/enotty
> > > >      (unsupported ioctls return -ENOTTY, not -ENOSYS)
> > > > 
> > > > 2. https://github.com/intelfx/reiser4/tree/differences/migratep
> > > > age
> > > >      (the ->migratepage() implementation, which I still do not
> > > > completely
> > > >       understand, but it works)
> > > > 
> > > > 3. https://github.com/intelfx/reiser4/tree/differences/renameat
> > > > 2
> > > >      (renameat2(RENAME_NOREPLACE) implementation, which you
> > > > haven't
> > > >       merged somewhy)
> > > > 
> > > > 4. https://github.com/intelfx/reiser4/tree/differences/adjust-t
> > > > o-3.
> > > > 15
> > > >      (part of porting to 3.15 which, again, you haven't merged
> > > > somewhy)
> > > > 
> > > > These branches are on top of that granular "master".
> > > > Anyway, please take a look.
> > > It was definitely useful work,
> > > I'll look at those differences..
> > Maybe you could also consider rebasing things on top of that
> > extracted
> > granular history?
> > 
> 
> Interesting idea, but I am not able to estimate
> complexity of such rebasing for now.
> 


While we do not have any forks and can afford non-fast-forward updates
of master, the complexity is almost nil.

To rebase your format41 branch, one can do this:

git rebase --preserve-merges --onto 3c7b3c5802e20381496f641fe64b6c1573228c6e 8a896fd48ed35c7dfa0188f9b7f4cbdfd469cacb format41

where 8a896fd is merge-base of format41 and master (that big commit),
and 3c7b3c5 is the corresponding commit of the synthesized history.

Both commits have identical file content (`git diff 8a896fd 3c7b3c5`
yields empty output).

-- 
Ivan Shapovalov / intelfx /

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