From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Jeff Moyer Subject: Re: [PATCH V2 1/2] mm: hotplug: implement non-movable version of get_user_pages() called get_user_pages_non_movable() References: <1360056113-14294-1-git-send-email-linfeng@cn.fujitsu.com> <1360056113-14294-2-git-send-email-linfeng@cn.fujitsu.com> <20130205120137.GG21389@suse.de> <20130206004234.GD11197@blaptop> <20130206095617.GN21389@suse.de> <5190AE4F.4000103@cn.fujitsu.com> <20130513091902.GP11497@suse.de> <20130513143757.GP31899@kvack.org> Date: Mon, 13 May 2013 10:54:03 -0400 In-Reply-To: <20130513143757.GP31899@kvack.org> (Benjamin LaHaise's message of "Mon, 13 May 2013 10:37:57 -0400") Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org List-ID: To: Benjamin LaHaise Cc: Mel Gorman , Tang Chen , Minchan Kim , Lin Feng , akpm@linux-foundation.org, viro@zeniv.linux.org.uk, khlebnikov@openvz.org, walken@google.com, kamezawa.hiroyu@jp.fujitsu.com, riel@redhat.com, rientjes@google.com, isimatu.yasuaki@jp.fujitsu.com, wency@cn.fujitsu.com, laijs@cn.fujitsu.com, jiang.liu@huawei.com, zab@redhat.com, linux-mm@kvack.org, linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Marek Szyprowski Benjamin LaHaise writes: > On Mon, May 13, 2013 at 10:19:02AM +0100, Mel Gorman wrote: >> On Mon, May 13, 2013 at 05:11:43PM +0800, Tang Chen wrote: > ... >> > If so, I'm wondering where should we put this callback pointers ? >> > In struct page ? >> > >> >> No, I would expect the callbacks to be part the address space operations >> which can be found via page->mapping. > > If someone adds those callbacks and provides a means for testing them, > it would be pretty trivial to change the aio code to migrate its pinned > pages on demand. How do you propose to move the ring pages? Cheers, Jeff -- 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