From patchwork Tue Oct 6 15:19:19 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anand Jain X-Patchwork-Id: 7335931 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 06D7D9F750 for ; Tue, 6 Oct 2015 15:19:47 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2FBCC205CD for ; Tue, 6 Oct 2015 15:19:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2EFCB205DC for ; Tue, 6 Oct 2015 15:19:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753099AbbJFPTl (ORCPT ); Tue, 6 Oct 2015 11:19:41 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:30270 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753054AbbJFPTk (ORCPT ); Tue, 6 Oct 2015 11:19:40 -0400 Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id t96FJbJG024126 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 6 Oct 2015 15:19:38 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userv0022.oracle.com (8.13.8/8.13.8) with ESMTP id t96FJb4I018681 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Tue, 6 Oct 2015 15:19:37 GMT Received: from abhmp0001.oracle.com (abhmp0001.oracle.com [141.146.116.7]) by aserv0121.oracle.com (8.13.8/8.13.8) with ESMTP id t96FJbYn014237; Tue, 6 Oct 2015 15:19:37 GMT Received: from localhost.localdomain (/42.60.253.93) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 06 Oct 2015 08:19:36 -0700 From: Anand Jain To: linux-btrfs@vger.kernel.org Cc: dsterba@suse.cz Subject: [PATCH 2/7] Btrfs: clean up and optimize __check_raid_min_device() Date: Tue, 6 Oct 2015 23:19:19 +0800 Message-Id: <1444144764-2384-3-git-send-email-anand.jain@oracle.com> X-Mailer: git-send-email 2.4.1 In-Reply-To: <1444144764-2384-1-git-send-email-anand.jain@oracle.com> References: <1444144764-2384-1-git-send-email-anand.jain@oracle.com> X-Source-IP: userv0022.oracle.com [156.151.31.74] Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP __check_raid_min_device() which was pealed from btrfs_rm_device() maintianed its original code to show the block move. This patch cleans up __check_raid_min_device(). Signed-off-by: Anand Jain --- fs/btrfs/volumes.c | 43 +++++++++++++++++++------------------------ 1 file changed, 19 insertions(+), 24 deletions(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 6be21ff..35ee3ca 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1629,52 +1629,47 @@ out: return ret; } -static int __check_raid_min_devices(struct btrfs_root *root) +static int __check_raid_min_devices(struct btrfs_fs_info *fs_info) { u64 all_avail; u64 num_devices; unsigned seq; - int ret = 0; - num_devices = root->fs_info->fs_devices->num_devices; - btrfs_dev_replace_lock(&root->fs_info->dev_replace); - if (btrfs_dev_replace_is_ongoing(&root->fs_info->dev_replace)) { + num_devices = fs_info->fs_devices->num_devices; + btrfs_dev_replace_lock(&fs_info->dev_replace); + if (btrfs_dev_replace_is_ongoing(&fs_info->dev_replace)) { WARN_ON(num_devices < 1); num_devices--; } - btrfs_dev_replace_unlock(&root->fs_info->dev_replace); + btrfs_dev_replace_unlock(&fs_info->dev_replace); do { - seq = read_seqbegin(&root->fs_info->profiles_lock); + seq = read_seqbegin(&fs_info->profiles_lock); - all_avail = root->fs_info->avail_data_alloc_bits | - root->fs_info->avail_system_alloc_bits | - root->fs_info->avail_metadata_alloc_bits; - } while (read_seqretry(&root->fs_info->profiles_lock, seq)); + all_avail = fs_info->avail_data_alloc_bits | + fs_info->avail_system_alloc_bits | + fs_info->avail_metadata_alloc_bits; + } while (read_seqretry(&fs_info->profiles_lock, seq)); if ((all_avail & BTRFS_BLOCK_GROUP_RAID10) && num_devices <= 4) { - ret = BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET; - goto out; + return BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET; } if ((all_avail & BTRFS_BLOCK_GROUP_RAID1) && num_devices <= 2) { - ret = BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET; - goto out; + return BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET; } if ((all_avail & BTRFS_BLOCK_GROUP_RAID5) && - root->fs_info->fs_devices->rw_devices <= 2) { - ret = BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET; - goto out; + fs_info->fs_devices->rw_devices <= 2) { + return BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET; } + if ((all_avail & BTRFS_BLOCK_GROUP_RAID6) && - root->fs_info->fs_devices->rw_devices <= 3) { - ret = BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET; - goto out; + fs_info->fs_devices->rw_devices <= 3) { + return BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET; } -out: - return ret; + return 0; } int btrfs_rm_device(struct btrfs_root *root, char *device_path) @@ -1693,7 +1688,7 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path) mutex_lock(&uuid_mutex); - ret = __check_raid_min_devices(root); + ret = __check_raid_min_devices(root->fs_info); if (ret) goto out;