Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23

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From: Linus Torvalds
Date: Sunday, December 9, 2007 - 11:41 am

On Sun, 9 Dec 2007, Alan Cox wrote:

Btw, Alan, that "math" is total and utter BULLSH*T, and you should know 
that.

"The one off regression" is likely the tip of an iceberg. If something 
regresses for one person, for that one person who tested and noticed and 
made a bug-report, there's probably a thousand people who haven't even 
tested the development kernel, or who had problems and just went back to 
the previous version.

In contrast, reverting something will be guaranteed to not have those 
kinds of issues, since the only people who could notice are people for who 
it never worked in the first place. There's no "silent mass of people" 
that can be affected.

This is why regressions are so important. They don't trump _everything_, 
but basically ignoring and letting them slide is *much* more painful than 
just reverting it.

The biggest reason to ignore a regression is if nobody can even figure 
out where it came from, or reverting simply isn't an option for some 
really deep and fundamental issue. That doesn't seem to be the case here. 

So we should revert unless there is some known acceptable real fix.

		Linus

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Messages in current thread:
2.6.24-rc4-git5: Reported regressions from 2.6.23, Rafael J. Wysocki, (Fri Dec 7, 7:40 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Fabio Comolli, (Fri Dec 7, 11:53 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Andrew Morton, (Sat Dec 8, 2:23 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Andrew Morton, (Sat Dec 8, 2:29 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Andrew Morton, (Sat Dec 8, 2:36 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Andrew Morton, (Sat Dec 8, 2:46 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Andrew Morton, (Sat Dec 8, 2:52 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Andreas Mohr, (Sat Dec 8, 3:12 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Andrew Morton, (Sat Dec 8, 3:20 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Matthew Garrett, (Sat Dec 8, 3:28 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Richard Purdie, (Sat Dec 8, 3:44 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Theodore Tso, (Sat Dec 8, 12:40 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Ingo Molnar, (Sat Dec 8, 12:55 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Rafael J. Wysocki, (Sat Dec 8, 3:11 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Rafael J. Wysocki, (Sat Dec 8, 3:17 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Rafael J. Wysocki, (Sat Dec 8, 3:30 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Rafael J. Wysocki, (Sat Dec 8, 3:32 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Theodore Tso, (Sat Dec 8, 7:15 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Andrew Morton, (Sun Dec 9, 4:54 am)
Re: tipc_init(), WARNING: at arch/x86/mm/highmem_32.c:52, ..., Rafael J. Wysocki, (Sun Dec 9, 7:17 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Rafael J. Wysocki, (Sun Dec 9, 7:20 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Rafael J. Wysocki, (Sun Dec 9, 7:24 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Linus Torvalds, (Sun Dec 9, 11:36 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Linus Torvalds, (Sun Dec 9, 11:41 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Andreas Mohr, (Sun Dec 9, 12:59 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Linus Torvalds, (Sun Dec 9, 6:57 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Ingo Molnar, (Mon Dec 10, 1:21 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Ingo Molnar, (Mon Dec 10, 1:41 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Ingo Molnar, (Mon Dec 10, 1:42 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Guillaume Chazarain, (Mon Dec 10, 1:57 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Andrew Morton, (Mon Dec 10, 1:59 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Ingo Molnar, (Mon Dec 10, 3:45 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Ingo Molnar, (Mon Dec 10, 4:04 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Stefano Brivio, (Mon Dec 10, 4:34 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Guillaume Chazarain, (Mon Dec 10, 4:53 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Guillaume Chazarain, (Mon Dec 10, 5:01 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Arjan van de Ven, (Mon Dec 10, 6:06 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Ingo Molnar, (Tue Dec 11, 1:48 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Ingo Molnar, (Tue Dec 11, 2:01 am)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Stefano Brivio, (Tue Dec 11, 2:10 pm)
Re: tipc_init(), WARNING: at arch/x86/mm/highmem_32.c:52, ..., Christoph Lameter, (Thu Dec 13, 3:03 pm)
Re: tipc_init(), WARNING: at arch/x86/mm/highmem_32.c:52, ..., Christoph Lameter, (Thu Dec 13, 3:07 pm)
Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23, Takashi Iwai, (Thu Dec 20, 8:42 am)