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Message-Id: <1245290413.21602.40.camel@pasglop>
Date: Thu, 18 Jun 2009 12:00:12 +1000
From: Benjamin Herrenschmidt <benh@...nel.crashing.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Pekka Enberg <penberg@...helsinki.fi>,
Christoph Lameter <cl@...ux-foundation.org>,
Nick Piggin <npiggin@...e.de>,
Heiko Carstens <heiko.carstens@...ibm.com>,
linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
kamezawa.hiroyu@...fujitsu.com, lizf@...fujitsu.com, mingo@...e.hu,
yinghai@...nel.org
Subject: Re: [GIT PULL v2] Early SLAB fixes for 2.6.31
> So I'm very much ok with the whole "use magic gfp_mask to indicate what
> works at what stage". And yes, I think it makes sense to extend it to the
> page allocator and might_sleep too, because GFP_KERNEL has all the same
> issues regardless of whether it's about page allocation or about slab
> allocators. And any "might_sleep" suppression really does tend to be about
> the exact same thing.
Argh... still broken.
In fact, my initial patch added it to the page allocator, which worked
for me. Pekka patch removed that and made it slab-only. So I'm blowing
up at boot in lockdep or so because I'm allocating page tables on
ppc32 with __get_free_pages() and GFP_KERNEL.
I'll cook up a patch.
Cheers,
Ben.
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