linux-kernel - Re: [PATCH] unicore32 framebuffer driver fix: make videomemory kmalloc-ed and floatable

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Message-Id: <201103301255.18551.arnd@arndb.de>
Date:	Wed, 30 Mar 2011 12:55:18 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	"Guan Xuetao" <gxt@...c.pku.edu.cn>
Cc:	"'Paul Mundt'" <lethal@...ux-sh.org>, linux-kernel@...r.kernel.org,
	linux-fbdev@...r.kernel.org
Subject: Re: [PATCH] unicore32 framebuffer driver fix: make videomemory kmalloc-ed and floatable

On Wednesday 30 March 2011, Guan Xuetao wrote:
> Is it appropriate to using __get_free_pages in framebuffer driver?

Yes, it is appropriate, and it is also more efficient than using
kmalloc.

> And both SLAB and SLUB allocators support 4MB request.

Ok, I did not know that, but I see now how the maximum size is computed.
The limit was 128 KB for a long time, but has apparently changed.

	Arnd
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