From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nick Piggin Message-Id: <20060108052307.2996.39444.sendpatchset@didi.local0.net> Subject: [patch 0/4] mm: de-skew page_count Date: Sun, 8 Jan 2006 00:19:27 -0500 Sender: owner-linux-mm@kvack.org Return-Path: To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Nick Piggin , Andrew Morton List-ID: The following patchset (against 2.6.15-rc5ish) uses the new atomic ops to do away with the offset page refcounting, and simplify the race that it was designed to cover. This allows some nice optimisations, and we end up saving 2 atomic ops including a spin_lock_irqsave in the !PageLRU case, and 1 or 2 atomic ops in the PageLRU case in the page-release path. It also happens to be a requirement for my lockless pagecache work, but stands on its own as good patches. Nick -- SUSE Labs, Novell Inc. Send instant messages to your online friends http://au.messenger.yahoo.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-mm.org/ . Don't email: email@kvack.org