From patchwork Tue Apr 3 18:34:10 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Sterba X-Patchwork-Id: 10321651 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id F266660532 for ; Tue, 3 Apr 2018 18:36:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E8C7A28CB7 for ; Tue, 3 Apr 2018 18:36:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DDA1028CBB; Tue, 3 Apr 2018 18:36:43 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 459F528CB7 for ; Tue, 3 Apr 2018 18:36:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752924AbeDCSgl (ORCPT ); Tue, 3 Apr 2018 14:36:41 -0400 Received: from mx2.suse.de ([195.135.220.15]:35528 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751584AbeDCSgj (ORCPT ); Tue, 3 Apr 2018 14:36:39 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id D5BC9ABC9 for ; Tue, 3 Apr 2018 18:36:37 +0000 (UTC) Received: by ds.suse.cz (Postfix, from userid 10065) id C27B7DA8A7; Tue, 3 Apr 2018 20:34:10 +0200 (CEST) From: David Sterba To: linux-btrfs@vger.kernel.org Cc: David Sterba Subject: [PATCH 04/16] btrfs: move btrfs_init_dev_replace_tgtdev to dev-replace.c and make static Date: Tue, 3 Apr 2018 20:34:10 +0200 Message-Id: X-Mailer: git-send-email 2.16.2 In-Reply-To: References: Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The function logically belongs there and there's only a single caller, no need to export it. No code changes. Signed-off-by: David Sterba Reviewed-by: Anand Jain --- fs/btrfs/dev-replace.c | 99 ++++++++++++++++++++++++++++++++++++++++++++++++++ fs/btrfs/volumes.c | 99 -------------------------------------------------- fs/btrfs/volumes.h | 4 -- 3 files changed, 99 insertions(+), 103 deletions(-) diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c index e3b8a79c1665..7a87ffad041e 100644 --- a/fs/btrfs/dev-replace.c +++ b/fs/btrfs/dev-replace.c @@ -188,6 +188,105 @@ int btrfs_init_dev_replace(struct btrfs_fs_info *fs_info) return ret; } +/* + * Initialize a new device for device replace target from a given source dev + * and path. + * + * Return 0 and new device in @device_out, otherwise return < 0 + */ +static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info, + const char *device_path, + struct btrfs_device *srcdev, + struct btrfs_device **device_out) +{ + struct btrfs_device *device; + struct block_device *bdev; + struct list_head *devices; + struct rcu_string *name; + u64 devid = BTRFS_DEV_REPLACE_DEVID; + int ret = 0; + + *device_out = NULL; + if (fs_info->fs_devices->seeding) { + btrfs_err(fs_info, "the filesystem is a seed filesystem!"); + return -EINVAL; + } + + bdev = blkdev_get_by_path(device_path, FMODE_WRITE | FMODE_EXCL, + fs_info->bdev_holder); + if (IS_ERR(bdev)) { + btrfs_err(fs_info, "target device %s is invalid!", device_path); + return PTR_ERR(bdev); + } + + filemap_write_and_wait(bdev->bd_inode->i_mapping); + + devices = &fs_info->fs_devices->devices; + list_for_each_entry(device, devices, dev_list) { + if (device->bdev == bdev) { + btrfs_err(fs_info, + "target device is in the filesystem!"); + ret = -EEXIST; + goto error; + } + } + + + if (i_size_read(bdev->bd_inode) < + btrfs_device_get_total_bytes(srcdev)) { + btrfs_err(fs_info, + "target device is smaller than source device!"); + ret = -EINVAL; + goto error; + } + + + device = btrfs_alloc_device(NULL, &devid, NULL); + if (IS_ERR(device)) { + ret = PTR_ERR(device); + goto error; + } + + name = rcu_string_strdup(device_path, GFP_KERNEL); + if (!name) { + btrfs_free_device(device); + ret = -ENOMEM; + goto error; + } + rcu_assign_pointer(device->name, name); + + mutex_lock(&fs_info->fs_devices->device_list_mutex); + set_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state); + device->generation = 0; + device->io_width = fs_info->sectorsize; + device->io_align = fs_info->sectorsize; + device->sector_size = fs_info->sectorsize; + device->total_bytes = btrfs_device_get_total_bytes(srcdev); + device->disk_total_bytes = btrfs_device_get_disk_total_bytes(srcdev); + device->bytes_used = btrfs_device_get_bytes_used(srcdev); + device->commit_total_bytes = srcdev->commit_total_bytes; + device->commit_bytes_used = device->bytes_used; + device->fs_info = fs_info; + device->bdev = bdev; + set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state); + set_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state); + device->mode = FMODE_EXCL; + device->dev_stats_valid = 1; + set_blocksize(device->bdev, BTRFS_BDEV_BLOCKSIZE); + device->fs_devices = fs_info->fs_devices; + list_add(&device->dev_list, &fs_info->fs_devices->devices); + fs_info->fs_devices->num_devices++; + fs_info->fs_devices->open_devices++; + mutex_unlock(&fs_info->fs_devices->device_list_mutex); + + *device_out = device; + return 0; + +error: + blkdev_put(bdev, FMODE_EXCL); + return ret; +} + /* * called from commit_transaction. Writes changed device replace state to * disk. diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index ca5521cc1a5b..df2d6d06e014 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -2592,105 +2592,6 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path return ret; } -/* - * Initialize a new device for device replace target from a given source dev - * and path. - * - * Return 0 and new device in @device_out, otherwise return < 0 - */ -int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info, - const char *device_path, - struct btrfs_device *srcdev, - struct btrfs_device **device_out) -{ - struct btrfs_device *device; - struct block_device *bdev; - struct list_head *devices; - struct rcu_string *name; - u64 devid = BTRFS_DEV_REPLACE_DEVID; - int ret = 0; - - *device_out = NULL; - if (fs_info->fs_devices->seeding) { - btrfs_err(fs_info, "the filesystem is a seed filesystem!"); - return -EINVAL; - } - - bdev = blkdev_get_by_path(device_path, FMODE_WRITE | FMODE_EXCL, - fs_info->bdev_holder); - if (IS_ERR(bdev)) { - btrfs_err(fs_info, "target device %s is invalid!", device_path); - return PTR_ERR(bdev); - } - - filemap_write_and_wait(bdev->bd_inode->i_mapping); - - devices = &fs_info->fs_devices->devices; - list_for_each_entry(device, devices, dev_list) { - if (device->bdev == bdev) { - btrfs_err(fs_info, - "target device is in the filesystem!"); - ret = -EEXIST; - goto error; - } - } - - - if (i_size_read(bdev->bd_inode) < - btrfs_device_get_total_bytes(srcdev)) { - btrfs_err(fs_info, - "target device is smaller than source device!"); - ret = -EINVAL; - goto error; - } - - - device = btrfs_alloc_device(NULL, &devid, NULL); - if (IS_ERR(device)) { - ret = PTR_ERR(device); - goto error; - } - - name = rcu_string_strdup(device_path, GFP_KERNEL); - if (!name) { - btrfs_free_device(device); - ret = -ENOMEM; - goto error; - } - rcu_assign_pointer(device->name, name); - - mutex_lock(&fs_info->fs_devices->device_list_mutex); - set_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state); - device->generation = 0; - device->io_width = fs_info->sectorsize; - device->io_align = fs_info->sectorsize; - device->sector_size = fs_info->sectorsize; - device->total_bytes = btrfs_device_get_total_bytes(srcdev); - device->disk_total_bytes = btrfs_device_get_disk_total_bytes(srcdev); - device->bytes_used = btrfs_device_get_bytes_used(srcdev); - device->commit_total_bytes = srcdev->commit_total_bytes; - device->commit_bytes_used = device->bytes_used; - device->fs_info = fs_info; - device->bdev = bdev; - set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state); - set_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state); - device->mode = FMODE_EXCL; - device->dev_stats_valid = 1; - set_blocksize(device->bdev, BTRFS_BDEV_BLOCKSIZE); - device->fs_devices = fs_info->fs_devices; - list_add(&device->dev_list, &fs_info->fs_devices->devices); - fs_info->fs_devices->num_devices++; - fs_info->fs_devices->open_devices++; - mutex_unlock(&fs_info->fs_devices->device_list_mutex); - - *device_out = device; - return 0; - -error: - blkdev_put(bdev, FMODE_EXCL); - return ret; -} - static noinline int btrfs_update_device(struct btrfs_trans_handle *trans, struct btrfs_device *device) { diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 45e3ece21290..681be2dc0c6a 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -445,10 +445,6 @@ struct btrfs_device *btrfs_find_device(struct btrfs_fs_info *fs_info, u64 devid, u8 *uuid, u8 *fsid); int btrfs_shrink_device(struct btrfs_device *device, u64 new_size); int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *path); -int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info, - const char *device_path, - struct btrfs_device *srcdev, - struct btrfs_device **device_out); int btrfs_balance(struct btrfs_balance_control *bctl, struct btrfs_ioctl_balance_args *bargs); int btrfs_resume_balance_async(struct btrfs_fs_info *fs_info);