From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 16 May 2000 20:46:51 -0300 (BRST) From: Rik van Riel Subject: Re: Best way to extend try_to_free_pages()? In-Reply-To: <20000517005828.A3028@storm.local> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Andreas Bombe Cc: linux-kernel@vger.rutgers.edu, linux-mm@kvack.org List-ID: On Wed, 17 May 2000, Andreas Bombe wrote: > (not possible, since 1394 code can be modularized)? If not, I > consider adding some generic code to register callbacks for low > memory situations as soon as I need it. A callback system from do_try_to_free_pages(), where anybody can dynamically register their cache->drop_pages() function would be nice. Maybe a list of caches with function pointers? spin_lock(&cachelist_lock); for (cache = &cachelist.next ; cache->next != &cachelist ; cache = cachelist->next) { count -= cache->drop_pages(priority); if (count <= 0) break; } spin_unlock(&cachelist_lock); On module load time, init_module() could grab the cachelist_lock, insert an entry in the list and next time try_to_free_pages() is called our cache will be shrunk too. regards, Rik -- The Internet is not a network of computers. It is a network of people. That is its real strength. Wanna talk about the kernel? irc.openprojects.net / #kernelnewbies http://www.conectiva.com/ http://www.surriel.com/ -- 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.eu.org/Linux-MM/