BTRFS_SUPER_MAGIC  668 src/gpt-auto-generator/gpt-auto-generator.c         if (F_TYPE_EQUAL(sfs.f_type, BTRFS_SUPER_MAGIC))
BTRFS_SUPER_MAGIC  507 src/readahead/readahead-collect.c         on_btrfs = statfs(root, &sfs) >= 0 && F_TYPE_EQUAL(sfs.f_type, BTRFS_SUPER_MAGIC);
BTRFS_SUPER_MAGIC  265 src/shared/missing.h #ifndef BTRFS_SUPER_MAGIC