+
+static void prepare_random_fsid(struct btrfs_super_block *disk_super,
+ const char *path)
+{
+ struct btrfs_fs_devices *fs_devices;
+ u8 vfsid[BTRFS_FSID_SIZE];
+ bool dup_fsid = true;
+
+ while (dup_fsid) {
+ dup_fsid = false;
+ generate_random_uuid(vfsid);
+
+ list_for_each_entry(fs_devices, &fs_uuids, fs_list) {
+ if (!memcmp(vfsid, fs_devices->fsid, BTRFS_FSID_SIZE) ||
+ !memcmp(vfsid, fs_devices->metadata_uuid,
+ BTRFS_FSID_SIZE))
+ dup_fsid = true;
+ }
I've noticed this section of the code a few times, but I don't believe
I've mentioned it before. We've been using generate_random_guid() and
generate_random_uuid() without checking for UUID clashes. Why extra
uuid clash check here?
Thanks, Anand
