include/linux/fs.h

1198 struct super_block {  struct
1199 	struct list_head	s_list;		/* Keep this first */
1200 	dev_t			s_dev;		/* search index; _not_ kdev_t */
1201 	unsigned char		s_blocksize_bits;
1202 	unsigned long		s_blocksize;
1203 	loff_t			s_maxbytes;	/* Max file size */
1204 	struct file_system_type	*s_type;
1205 	const struct super_operations	*s_op;
1206 	const struct dquot_operations	*dq_op;
1207 	const struct quotactl_ops	*s_qcop;
1208 	const struct export_operations *s_export_op;
1209 	unsigned long		s_flags;
1210 	unsigned long		s_iflags;	/* internal SB_I_* flags */
1211 	unsigned long		s_magic;
1212 	struct dentry		*s_root;
1213 	struct rw_semaphore	s_umount;
1214 	int			s_count;
1215 	atomic_t		s_active;
1217 	void                    *s_security;
1219 	const struct xattr_handler * const *s_xattr;
1221 	const struct fscrypt_operations	*s_cop;
1222 	struct fscrypt_keyring	*s_master_keys; /* master crypto keys in use */
1225 	const struct fsverity_operations *s_vop;
1228 	struct unicode_map *s_encoding;
1229 	__u16 s_encoding_flags;
1231 	struct hlist_bl_head	s_roots;	/* alternate root dentries for NFS */
1232 	struct list_head	s_mounts;	/* list of mounts; _not_ for fs use */
1233 	struct block_device	*s_bdev;
1234 	struct bdev_handle	*s_bdev_handle;
1235 	struct backing_dev_info *s_bdi;
1236 	struct mtd_info		*s_mtd;
1237 	struct hlist_node	s_instances;
1238 	unsigned int		s_quota_types;	/* Bitmask of supported quota types */
1239 	struct quota_info	s_dquot;	/* Diskquota specific options */
1241 	struct sb_writers	s_writers;
1248 	void			*s_fs_info;	/* Filesystem private info */
1251 	u32			s_time_gran;
1253 	time64_t		   s_time_min;
1254 	time64_t		   s_time_max;
1256 	__u32			s_fsnotify_mask;
1257 	struct fsnotify_mark_connector __rcu	*s_fsnotify_marks;
1260 	char			s_id[32];	/* Informational name */
1261 	uuid_t			s_uuid;		/* UUID */
1263 	unsigned int		s_max_links;
1269 	struct mutex s_vfs_rename_mutex;	/* Kludge */
1275 	const char *s_subtype;
1277 	const struct dentry_operations *s_d_op; /* default d_op for dentries */
1279 	struct shrinker *s_shrink;	/* per-sb shrinker handle */
1282 	atomic_long_t s_remove_count;
1288 	atomic_long_t s_fsnotify_connectors;
1291 	int s_readonly_remount;
1294 	errseq_t s_wb_err;
1297 	struct workqueue_struct *s_dio_done_wq;
1298 	struct hlist_head s_pins;
1305 	struct user_namespace *s_user_ns;
1312 	struct list_lru		s_dentry_lru;
1313 	struct list_lru		s_inode_lru;
1314 	struct rcu_head		rcu;
1315 	struct work_struct	destroy_work;
1317 	struct mutex		s_sync_lock;	/* sync serialisation lock */
1322 	int s_stack_depth;
1325 	spinlock_t		s_inode_list_lock ____cacheline_aligned_in_smp;
1326 	struct list_head	s_inodes;	/* all inodes */
1328 	spinlock_t		s_inode_wblist_lock;
1329 	struct list_head	s_inodes_wb;	/* writeback inodes */