shrinker_debugfs_rename
shrinker_debugfs_rename(sb->s_shrink, "sb-btrfs:%s", sb->s_id);
shrinker_debugfs_rename(sb->s_shrink, "sb-%s:%s", sb->s_type->name,
extern int __printf(2, 3) shrinker_debugfs_rename(struct shrinker *shrinker,
int shrinker_debugfs_rename(struct shrinker *shrinker, const char *fmt, ...)
EXPORT_SYMBOL(shrinker_debugfs_rename);