From 4844c3664a72d36cc79752cb651c78860b14c240 Mon Sep 17 00:00:00 2001 From: Anand Jain Date: Mon, 31 Jul 2023 19:16:32 +0800 Subject: btrfs: add a helper to read the superblock metadata_uuid In some cases, we need to read the FSID from the superblock when the metadata_uuid is not set, and otherwise, read the metadata_uuid. So, add a helper. Reviewed-by: Johannes Thumshirn Tested-by: Guilherme G. Piccoli Signed-off-by: Anand Jain Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/volumes.h | 1 + 1 file changed, 1 insertion(+) (limited to 'fs/btrfs/volumes.h') diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index a59898d51e9e..2128a032c3b7 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -747,5 +747,6 @@ int btrfs_verify_dev_extents(struct btrfs_fs_info *fs_info); bool btrfs_repair_one_zone(struct btrfs_fs_info *fs_info, u64 logical); bool btrfs_pinned_by_swapfile(struct btrfs_fs_info *fs_info, void *ptr); +u8 *btrfs_sb_fsid_ptr(struct btrfs_super_block *sb); #endif -- cgit v1.2.3-73-gaa49b