From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org ([198.137.202.9]:50650 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966324AbcLVUA3 (ORCPT ); Thu, 22 Dec 2016 15:00:29 -0500 From: Christoph Hellwig Subject: [PATCH 1/5] xfs: bump up reserved blocks in xfs_alloc_set_aside Date: Thu, 22 Dec 2016 21:00:18 +0100 Message-Id: <1482436822-31546-2-git-send-email-hch@lst.de> In-Reply-To: <1482436822-31546-1-git-send-email-hch@lst.de> References: <1482436822-31546-1-git-send-email-hch@lst.de> Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: linux-xfs@vger.kernel.org Cc: eguan@redhat.com, darrick.wong@oracle.com Setting aside 4 blocks globally for bmbt splits isn't all that useful, as different threads can allocate space in parallel. Bump it to 4 blocks per AG to allow each thread that is currently doing an allocation to dip into it. Signed-off-by: Christoph Hellwig --- fs/xfs/libxfs/xfs_alloc.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c index 5050056..0a46f84 100644 --- a/fs/xfs/libxfs/xfs_alloc.c +++ b/fs/xfs/libxfs/xfs_alloc.c @@ -95,10 +95,7 @@ unsigned int xfs_alloc_set_aside( struct xfs_mount *mp) { - unsigned int blocks; - - blocks = 4 + (mp->m_sb.sb_agcount * XFS_ALLOC_AGFL_RESERVE); - return blocks; + return mp->m_sb.sb_agcount * (XFS_ALLOC_AGFL_RESERVE + 4); } /* -- 2.1.4