Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757965Ab1DLP7E (ORCPT ); Tue, 12 Apr 2011 11:59:04 -0400 Received: from mail-bw0-f46.google.com ([209.85.214.46]:50804 "EHLO mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756352Ab1DLP7D (ORCPT ); Tue, 12 Apr 2011 11:59:03 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:content-type:to:cc:subject:references:date:mime-version :content-transfer-encoding:from:message-id:in-reply-to:user-agent; b=JSfaQHlCnTLHdR75FctR4XVnePS+ga1eno99icCylf+/PjhHo4+8HSqEe9NNYbAUeE OonwWvD63Y8Xw8iVyex3zmty1nKvptEqO+CTMVO5rEHP8cVwIdJibRq3l/lTi/Ml3bcZ +vDEtvvx/q8KBf+b/+MSdVswJVsGLNFb8CKt4= Content-Type: text/plain; charset=utf-8; format=flowed; delsp=yes To: "Dave Hansen" Cc: "Andrew Morton" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Timur Tabi" , "Andi Kleen" , "Mel Gorman" , "David Rientjes" Subject: Re: [PATCH 2/3] make new alloc_pages_exact() References: <20110411220345.9B95067C@kernel> <20110411220346.2FED5787@kernel> <20110411152223.3fb91a62.akpm@linux-foundation.org> <1302620653.8321.1725.camel@nimitz> Date: Tue, 12 Apr 2011 17:58:59 +0200 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: "Michal Nazarewicz" Message-ID: In-Reply-To: <1302620653.8321.1725.camel@nimitz> User-Agent: Opera Mail/11.01 (Linux) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1404 Lines: 38 On Tue, 12 Apr 2011 17:04:13 +0200, Dave Hansen wrote: > On Tue, 2011-04-12 at 12:28 +0200, Michal Nazarewicz wrote: >> > Dave Hansen wrote: >> >> +void __free_pages_exact(struct page *page, size_t nr_pages) >> >> +{ >> >> + struct page *end = page + nr_pages; >> >> + >> >> + while (page < end) { >> >> + __free_page(page); >> >> + page++; >> >> + } >> >> +} >> >> +EXPORT_SYMBOL(__free_pages_exact); >> >> On Tue, 12 Apr 2011 00:22:23 +0200, Andrew Morton wrote: >> > Really, this function duplicates release_pages(). >> >> It requires an array of pointers to pages which is not great though if >> one >> just wants to free a contiguous sequence of pages. > > Actually, the various mem_map[]s _are_ arrays, at least up to > MAX_ORDER_NR_PAGES at a time. We can use that property here. In that case, waiting eagerly for the new patch. :) -- Best regards, _ _ .o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o ..o | Computer Science, Michal "mina86" Nazarewicz (o o) ooo +----------ooO--(_)--Ooo-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/