linux-kernel - Re: 2.6.25-rc7-git2: Reported regressions from 2.6.24

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Message-ID: <84144f020803291652l13d3de82o424e126655b86119@mail.gmail.com>
Date:	Sun, 30 Mar 2008 01:52:18 +0200
From:	"Pekka Enberg" <penberg@...helsinki.fi>
To:	"Linus Torvalds" <torvalds@...ux-foundation.org>
Cc:	"Christoph Lameter" <clameter@....com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	"Pawel Staszewski" <pstaszewski@...com.pl>,
	LKML <linux-kernel@...r.kernel.org>,
	"Adrian Bunk" <bunk@...nel.org>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Natalie Protasevich" <protasnb@...il.com>
Subject: Re: 2.6.25-rc7-git2: Reported regressions from 2.6.24

Hi,

On Sat, 29 Mar 2008, Christoph Lameter wrote:
>  > Yes it uses its own logic if the object is managed by SLUB but not if the
>  > object is too big and/or the allocation forwarded to the page allocator
>  > or for other internal allocations of buffers etc.

On Sat, Mar 29, 2008 at 11:29 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>  Wrong.
>
>  It uses it's own logic for __GFP_ZERO *regardless* of size.

Christoph, I think you're overlooking the same thing I was until Linus
straightened me out. We're calling kmalloc_large() from __slab_alloc()
for the fall-back case which causes a bug fixed by Linus' revert.

On Sat, Mar 29, 2008 at 11:29 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>  You don't have a f*cking clue about this cocde that you're supposed to be
>  maintaining, do you?

Yeah, me too. Fortunately we have you as our upstream maintainer :-).

                        Pekka
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