diff options
| author | David Sterba <dsterba@suse.com> | 2019-08-01 18:50:16 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2019-09-09 14:59:07 +0200 |
| commit | f93c39970b1da007b3110fd7c9dd361614922457 (patch) | |
| tree | 0ecf1296e31965a90e8654ec75d5f3a123c56b46 /fs/btrfs/sysfs.c | |
| parent | b5865babb7b44308f0d0ece39756d55ef7628742 (diff) | |
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 <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/sysfs.c')
| -rw-r--r-- | fs/btrfs/sysfs.c | 15 |
1 files changed, 15 insertions, 0 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; |