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SubjectRe: 2.6.21-rc1: known regressions (part 2)

* Linus Torvalds <torvalds@linux-foundation.org> wrote:

> But most likely, 9f4bd5dd is actually already bad, and what you are
> seeing is two *different* bugs that just have the same symptoms
> ("suspend doesn't work").

the situation is simpler than that: there is a /known/ bug, and i marked
the bugfix commit as 'good'. I never met such a multiple-bugs scenario
before and forgot that git-bisect could easily pick a tree without this
essential bugfix and would not be able to make a distinction between the
two types of badness.

I'll try what i've described in the previous mail: mark all bisection
points that do not include f3ccb06f as 'good' - thus 'merging' the
known-bad area with the first known-good commit, and thus eliminating it
from the bisection space.

(but it might also be useful to have a "git-bisect must-include" kind of
command that would allow this to be automated: mark a particular tree as
an essential component of the search space.)

Ingo
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