linux-kernel - Re: [Bug #12422] 2.6.28-git can't resume from str

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Date:	Tue, 13 Jan 2009 09:20:29 +0800
From:	"Jeff Chua" <jeff.chua.linux@...il.com>
To:	"Ingo Molnar" <mingo@...e.hu>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>
Cc:	"Christian Borntraeger" <borntraeger@...ibm.com>,
	"Daniel Drake" <dsd@...too.org>, "Rafael J. Wysocki" <rjw@...k.pl>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Kernel Testers List" <kernel-testers@...r.kernel.org>,
	"Phil Dibowitz" <phil@...m.com>
Subject: Re: [Bug #12422] 2.6.28-git can't resume from str

On Mon, Jan 12, 2009 at 2:07 AM, Ingo Molnar <mingo@...e.hu> wrote:
>> Everything in-between should have
>> a0e280e0f33f6c859a235fb69a875ed8f3420388 applied?
> not necessarily - if an intermediate tree that is checked happened to have
> been based on some earlier -rc, it might have that bug included. Safest is
> to always cherry-pick that commit. (if it has no dependencies)

Thanks for pointing this out. My bisect was thrown off course because
I didn't "cherry-pick" that commit.

After cherry picking, I ended up with the same commit as was reported by
Christian Borntraeger -- "Regression 2.6.28-git: suspend/resume
failure. git bisected to usb suspend/resume patch".

I was trying to bisect further, but ended up with this strange behavior...

# start with a "fresh linux git download".
# ls
.               ..             .git     .gitignore   .mailmap  COPYING
CREDITS         Documentation  Kbuild   MAINTAINERS  Makefile  README
REPORTING-BUGS  arch           block    crypto       drivers   firmware
fs              include        init     ipc          kernel    lib
mm              net            samples  scripts      security  sound
usr             virt

# git bisect bad ae04d1401577bb63151480a053057de58b8e10bb
# git bisect good a3a798c88a14b35e5d4ca30716dbc9eb9a1ddfe2
Bisecting: 579 revisions left to test after this
[079899c2384023cd8efcd3806680b4f1d2abbd54] Btrfs: Change
find_extent_buffer to use TestSetPageLocked

# ls
.  ..  .git  fs

Is this a bug or a feature?

Jeff.
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