From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org ([198.137.202.133]:37876 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726812AbeGLN6y (ORCPT ); Thu, 12 Jul 2018 09:58:54 -0400 Received: from 213-225-6-92.nat.highway.a1.net ([213.225.6.92] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1fdby6-0008Eo-T5 for linux-xfs@vger.kernel.org; Thu, 12 Jul 2018 13:49:15 +0000 From: Christoph Hellwig Subject: reduce lookups in the COW extent tree V2 Date: Thu, 12 Jul 2018 15:49:04 +0200 Message-Id: <20180712134910.30298-1-hch@lst.de> Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: linux-xfs@vger.kernel.org This series (on top of the iomap series) reduce the number of lookups we do in the COW tree by adding a sequence number that counts modifications to the extent tree. Changes since v1: - don't update wpc->cow_seq for non-COW allocations - update a comment - rebase to the lastest tree as baseline