From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay3.corp.sgi.com [198.149.34.15]) by oss.sgi.com (Postfix) with ESMTP id 056597F4E for ; Tue, 19 Feb 2013 10:34:58 -0600 (CST) Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by relay3.corp.sgi.com (Postfix) with ESMTP id 6D715AC004 for ; Tue, 19 Feb 2013 08:34:57 -0800 (PST) Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by cuda.sgi.com with ESMTP id MwkWIwMBGCsJaFBT for ; Tue, 19 Feb 2013 08:34:56 -0800 (PST) Received: from int-mx12.intmail.prod.int.phx2.redhat.com (int-mx12.intmail.prod.int.phx2.redhat.com [10.5.11.25]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r1JGYtih005858 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Tue, 19 Feb 2013 11:34:56 -0500 Received: from bfoster.bfoster (dhcp-189-135.bos.redhat.com [10.16.189.135]) by int-mx12.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id r1JGYt3o003688 for ; Tue, 19 Feb 2013 11:34:55 -0500 From: Brian Foster Subject: [PATCH v3 1/7] xfs: reorganize xfs_iomap_prealloc_size to remove indentation Date: Tue, 19 Feb 2013 11:37:25 -0500 Message-Id: <1361291851-24714-2-git-send-email-bfoster@redhat.com> In-Reply-To: <1361291851-24714-1-git-send-email-bfoster@redhat.com> References: <1361291851-24714-1-git-send-email-bfoster@redhat.com> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: xfs@oss.sgi.com The majority of xfs_iomap_prealloc_size() executes within the check for lack of default I/O size. Reverse the logic to remove the extra indentation. Signed-off-by: Brian Foster Reviewed-by: Dave Chinner Reviewed-by: Ben Myers --- fs/xfs/xfs_iomap.c | 63 ++++++++++++++++++++++++++------------------------- 1 files changed, 32 insertions(+), 31 deletions(-) diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 912d83d..d914419 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -381,42 +381,43 @@ xfs_iomap_prealloc_size( int nimaps) { xfs_fsblock_t alloc_blocks = 0; + int shift = 0; + int64_t freesp; alloc_blocks = xfs_iomap_eof_prealloc_initial_size(mp, ip, offset, imap, nimaps); - if (alloc_blocks > 0) { - int shift = 0; - int64_t freesp; - - alloc_blocks = XFS_FILEOFF_MIN(MAXEXTLEN, - rounddown_pow_of_two(alloc_blocks)); - - xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); - freesp = mp->m_sb.sb_fdblocks; - if (freesp < mp->m_low_space[XFS_LOWSP_5_PCNT]) { - shift = 2; - if (freesp < mp->m_low_space[XFS_LOWSP_4_PCNT]) - shift++; - if (freesp < mp->m_low_space[XFS_LOWSP_3_PCNT]) - shift++; - if (freesp < mp->m_low_space[XFS_LOWSP_2_PCNT]) - shift++; - if (freesp < mp->m_low_space[XFS_LOWSP_1_PCNT]) - shift++; - } - if (shift) - alloc_blocks >>= shift; - - /* - * If we are still trying to allocate more space than is - * available, squash the prealloc hard. This can happen if we - * have a large file on a small filesystem and the above - * lowspace thresholds are smaller than MAXEXTLEN. - */ - while (alloc_blocks >= freesp) - alloc_blocks >>= 4; + if (!alloc_blocks) + goto check_writeio; + + alloc_blocks = XFS_FILEOFF_MIN(MAXEXTLEN, + rounddown_pow_of_two(alloc_blocks)); + + xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); + freesp = mp->m_sb.sb_fdblocks; + if (freesp < mp->m_low_space[XFS_LOWSP_5_PCNT]) { + shift = 2; + if (freesp < mp->m_low_space[XFS_LOWSP_4_PCNT]) + shift++; + if (freesp < mp->m_low_space[XFS_LOWSP_3_PCNT]) + shift++; + if (freesp < mp->m_low_space[XFS_LOWSP_2_PCNT]) + shift++; + if (freesp < mp->m_low_space[XFS_LOWSP_1_PCNT]) + shift++; } + if (shift) + alloc_blocks >>= shift; + + /* + * If we are still trying to allocate more space than is + * available, squash the prealloc hard. This can happen if we + * have a large file on a small filesystem and the above + * lowspace thresholds are smaller than MAXEXTLEN. + */ + while (alloc_blocks >= freesp) + alloc_blocks >>= 4; +check_writeio: if (alloc_blocks < mp->m_writeio_blocks) alloc_blocks = mp->m_writeio_blocks; -- 1.7.7.6 _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs