From f93c39970b1da007b3110fd7c9dd361614922457 Mon Sep 17 00:00:00 2001 From: David Sterba Date: Thu, 1 Aug 2019 18:50:16 +0200 Subject: [PATCH] btrfs: factor out sysfs code for updating sprout fsid Wrap the fsid renaming code and move it to sysfs.c. Signed-off-by: David Sterba --- fs/btrfs/sysfs.c | 15 +++++++++++++++ fs/btrfs/sysfs.h | 2 ++ fs/btrfs/volumes.c | 12 ++---------- 3 files changed, 19 insertions(+), 10 deletions(-) diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index 4de9bae3e186..9078e377ba7b 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -946,6 +946,21 @@ void btrfs_kobject_uevent(struct block_device *bdev, enum kobject_action action) &disk_to_dev(bdev->bd_disk)->kobj); } +void btrfs_sysfs_update_sprout_fsid(struct btrfs_fs_devices *fs_devices, + const u8 *fsid) +{ + char fsid_buf[BTRFS_UUID_UNPARSED_SIZE]; + + /* + * Sprouting changes fsid of the mounted filesystem, rename the fsid + * directory + */ + snprintf(fsid_buf, BTRFS_UUID_UNPARSED_SIZE, "%pU", fsid); + if (kobject_rename(&fs_devices->fsid_kobj, fsid_buf)) + btrfs_warn(fs_devices->fs_info, + "sysfs: failed to create fsid for sprout"); +} + /* /sys/fs/btrfs/ entry */ static struct kset *btrfs_kset; diff --git a/fs/btrfs/sysfs.h b/fs/btrfs/sysfs.h index 031697358b6e..4243fcf607b0 100644 --- a/fs/btrfs/sysfs.h +++ b/fs/btrfs/sysfs.h @@ -87,6 +87,8 @@ int btrfs_sysfs_add_fsid(struct btrfs_fs_devices *fs_devs, struct kobject *parent); int btrfs_sysfs_add_device(struct btrfs_fs_devices *fs_devs); void btrfs_sysfs_remove_fsid(struct btrfs_fs_devices *fs_devs); +void btrfs_sysfs_update_sprout_fsid(struct btrfs_fs_devices *fs_devices, + const u8 *fsid); void btrfs_sysfs_feature_update(struct btrfs_fs_info *fs_info, u64 bit, enum btrfs_feature_set set); void btrfs_kobject_uevent(struct block_device *bdev, enum kobject_action action); diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 830e4b0b5957..fa6eb9e0ba89 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -2680,22 +2680,14 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path } if (seeding_dev) { - char fsid_buf[BTRFS_UUID_UNPARSED_SIZE]; - ret = btrfs_finish_sprout(trans); if (ret) { btrfs_abort_transaction(trans, ret); goto error_sysfs; } - /* Sprouting would change fsid of the mounted root, - * so rename the fsid on the sysfs - */ - snprintf(fsid_buf, BTRFS_UUID_UNPARSED_SIZE, "%pU", - fs_info->fs_devices->fsid); - if (kobject_rename(&fs_devices->fsid_kobj, fsid_buf)) - btrfs_warn(fs_info, - "sysfs: failed to create fsid for sprout"); + btrfs_sysfs_update_sprout_fsid(fs_devices, + fs_info->fs_devices->fsid); } ret = btrfs_commit_transaction(trans); -- 2.11.0