From: Rik van Riel <riel@conectiva.com.br> To: Linus Torvalds <torvalds@transmeta.com> Subject: [PATCH *] new struct page shrinkage Date: Tue, 19 Feb 2002 11:34:15 -0300 (BRT) Cc: <linux-kernel@vger.kernel.org>, <linux-mm@kvack.org> Hi Linus, The patch has been changed like you wanted, with page->zone shoved into page->flags. I've also pulled the thing up to your latest changes from linux.bkbits.net so you should be able to just pull it into your tree from: bk://linuxvm.bkbits.net/linux-2.5-struct_page You can also view the patch on: http://surriel.com/patches/2.5/2.5.5-p2-struct_page5 I'm not retransmitting it to lkml as very little has changed. Please apply the patch to your 2.5 tree. thank you, Rik ----> begin standard blurb of explanation <---- I've forward-ported a small part of the -rmap patch to 2.5, the shrinkage of the struct page. Most of this code is from William Irwin and Christoph Hellwig. The executive summary: o page->wait is removed, instead we use a hash table of wait queues per zone ... collisions are ok because of wake-all semantics o page->virtual is only used on highmem machines and sparc64, other machines calculate the address instead o page->zone is moved into page->flags Linus, please pull from the bk tree: bk://linuxvm.bkbits.net/linux-2.5-struct_page - 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/