From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 8 Oct 2008 00:05:18 +0100 From: Alan Cox Subject: Re: [PATCH, v3] shmat: introduce flag SHM_MAP_NOT_FIXED Message-ID: <20081008000518.13f48462@lxorguk.ukuu.org.uk> In-Reply-To: <20081007211038.GQ20740@one.firstfloor.org> References: <1223396117-8118-1-git-send-email-kirill@shutemov.name> <2f11576a0810070931k79eb72dfr838a96650563b93a@mail.gmail.com> <20081007211038.GQ20740@one.firstfloor.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Andi Kleen Cc: KOSAKI Motohiro , "Kirill A. Shutemov" , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Ingo Molnar , Arjan van de Ven , Hugh Dickins , Ulrich Drepper , Andrew Morton List-ID: On Tue, 7 Oct 2008 23:10:38 +0200 Andi Kleen wrote: > > Sorry, no. > > This description still doesn't explain why this interface is needed. > > > > The one of the points is this interface is used by another person or not. > > You should explain how large this interface benefit has. > > > > Andi kleen explained this interface _can_ be used another one. > > but nobody explain who use it actually. > > Anyone who doesn't want to use fixed addresses. Can use shm_open and mmap to get POSIX standard shm behaviour via a sane interface without adding more crap to the sys3 shm madness. Sorry this patch is completely bogus - introduce the user programs involved to 1990s technology. They have to be updated to use such a change as is proposed anyway so they might as well use shm_open/mmap at which point no kernel changes are needed. Alan -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org