Re: [GIT PULL REQUEST] md updates for 4.3

From: Linus Torvalds
Date: Sat Sep 05 2015 - 21:04:25 EST

On Sat, Sep 5, 2015 at 2:37 AM, Neil Brown <neil@xxxxxxxxxx> wrote:
> Please pull these updates. I've already merged with the 'block' tree
> to resolve a few simple conflicts.

So for the future, I actually prefer to see and handle the conflicts myself.

I really just prefer knowing what's going on, and merge conflicts are
an indication of cross-maintainer issues which are *exactly* the kinds
of things I want to be aware of.

However, in this case I was "ok, I've already done several other merge
resolutions with the wbole damn bio_endio error handling changes", so
I felt I was aware enough about how that ended up being a
cross-subsystem conflict, and just took your pre-merged version.

If you feel that the conflicts are particularly subtle, or just
generally worry about the merge, or just because you want to do some
merge-testing, what some people end up doing is to send me their
unmerged branch, and then send me a separate ".. and here's the merge
I did". I'll then do the merge myself anyway, but then after doing the
merge I'll switch to a temporary testing branch and re-do the merge
with the pre-merged state just to verify. Generally the end result is
identical, but when it isn't, that's actually usually interesting
(sometimes it's just a ordering difference, but sometimes it's a merge
error - and so far I think most merge errors have come from
sub-maintainers, for the simple reason that they generally aren't as
used to merging as I am - so even if they know the code better, I
sometimes catch merge gotcha's better).

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