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authorAnand Jain <anand.jain@oracle.com>2023-10-04 18:00:24 +0300
committerDavid Sterba <dsterba@suse.com>2023-10-12 17:44:18 +0300
commit000331bb0350366219887d14ae8a921ae9e72269 (patch)
tree70f5f9ba957bce7a744b79f9637c1e36147e2789 /fs/btrfs
parent3cf63ddf29f94cfedae12a6ebebeaedbfc5d5de1 (diff)
downloadlinux-000331bb0350366219887d14ae8a921ae9e72269.tar.xz
btrfs: update comment for temp-fsid, fsid, and metadata_uuid
Update the comment to explain the relationship between temp_fsid, fsid, and metadata_uuid. Signed-off-by: Anand Jain <anand.jain@oracle.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/volumes.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index fef46c0dbf19..5dd4ad775e5d 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -299,6 +299,10 @@ struct btrfs_fs_devices {
* - When the BTRFS_FEATURE_INCOMPAT_METADATA_UUID flag is set:
* fs_devices->fsid == sb->fsid
* fs_devices->metadata_uuid == sb->metadata_uuid
+ *
+ * - When in-memory fs_devices->temp_fsid is true
+ * fs_devices->fsid = random
+ * fs_devices->metadata_uuid == sb->fsid
*/
u8 metadata_uuid[BTRFS_FSID_SIZE];