linux-kernel - Re: [PATCH, RFC] shmat: introduce flag SHM_MAP

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Message-Id: <20081007202127.5A74.KOSAKI.MOTOHIRO@jp.fujitsu.com>
Date:	Tue,  7 Oct 2008 20:26:03 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	kosaki.motohiro@...fujitsu.com,
	"Kirill A. Shutemov" <kirill@...temov.name>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Ingo Molnar <mingo@...hat.com>,
	Arjan van de Ven <arjan@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH, RFC] shmat: introduce flag SHM_MAP_HINT

> > Honestly, I don't like that qemu specific feature insert into shmem core.
> 
> I wouldn't say it's a qemu specific interface.  While qemu would 
> be the first user I would expect more in the future. It's a pretty
> obvious extension. In fact it nearly should be default, if the
> risk of breaking old applications wasn't too high.

hm, ok, i understand your intension.
however, I think following code isn't self describing.

	addr = shmat(shmid, addr, SHM_MAP_HINT);

because HINT is too generic word.
I think we should find better word.

SHM_MAP_NO_FIXED ?


In addision, I still think current patch has too poor description and too 
few comments.



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