linux-kernel - Re: [PATCH] fs: use kmalloc() to allocate fdmem if possible

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Message-ID: <y2z412e6f7f1005030005vc3be4977z3add08bfc72d1c44@mail.gmail.com>
Date:	Mon, 3 May 2010 15:05:59 +0800
From:	Changli Gao <xiaosuo@...il.com>
To:	Avi Kivity <avi@...hat.com>
Cc:	Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>, jslaby@...e.cz,
	akpm@...ux-foundation.org, paulmck@...ux.vnet.ibm.com,
	adobriyan@...il.com, mingo@...e.hu, peterz@...radead.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fs: use kmalloc() to allocate fdmem if possible

On Mon, May 3, 2010 at 2:06 PM, Avi Kivity <avi@...hat.com> wrote:
>
> My point is, vmalloc() and vfree should do this, not their callers:
>
> vmalloc(size):
>    if (size <= PAGE_SIZE)
>        return kmalloc(size, GFP_KERNEL);
>    ...
>
> vfree(p):
>    if (!is_vmalloc_addr(p) {
>        kfree(p);
>        return;
>    }
>    ...

I think we should not change vmalloc/vfree, and you can invent new
memory APIs, such as malloc()/free().

-- 
Regards，
Changli Gao(xiaosuo@...il.com)
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