LQUOTA_GENERATED_OID = 4096UL,
};
+/*
+ * lquota_entry support
+ */
+
+/* Common operations supported by a lquota_entry */
+struct lquota_entry_operations {
+ /* Initialize specific fields of a lquota entry */
+ void (*lqe_init)(struct lquota_entry *, void *arg);
+
+ /* Read quota settings from disk and update lquota entry */
+ int (*lqe_read)(const struct lu_env *, struct lquota_entry *,
+ void *arg);
+
+ /* Print debug information about a given lquota entry */
+ void (*lqe_debug)(struct lquota_entry *, void *,
+ struct libcfs_debug_msg_data *, const char *,
+ va_list);
+};
+
+/* Per-ID information specific to the quota master target */
+struct lquota_mst_entry {
+ /* global hard limit, in inodes or kbytes */
+ __u64 lme_hardlimit;
+
+ /* global quota soft limit, in inodes or kbytes */
+ __u64 lme_softlimit;
+
+ /* grace time, in seconds */
+ __u64 lme_gracetime;
+
+ /* last time we glimpsed */
+ __u64 lme_revoke_time;
+
+ /* r/w semaphore used to protect concurrent access to the quota
+ * parameters which are stored on disk */
+ cfs_rw_semaphore_t lme_sem;
+
+ /* quota space that may be released after glimpse */
+ __u64 lme_may_rel;
+};
+
+/* Per-ID information specific to the quota slave */
+struct lquota_slv_entry {
+ /* [ib]tune size, inodes or kbytes */
+ __u64 lse_qtune;
+
+ /* per-ID lock handle */
+ struct lustre_handle lse_lockh;
+
+ /* pending write which were granted quota space but haven't completed
+ * yet, in inodes or kbytes. */
+ __u64 lse_pending_write;
+
+ /* writes waiting for quota space, in inodes or kbytes. */
+ __u64 lse_waiting_write;
+
+ /* pending release, in inodes or kbytes */
+ __u64 lse_pending_rel;
+
+ /* pending dqacq/dqrel requests. */
+ unsigned int lse_pending_req;
+
+ /* rw spinlock protecting in-memory counters (i.e. lse_pending*) */
+ cfs_rwlock_t lse_lock;
+
+ /* waiter for pending request done */
+ cfs_waitq_t lse_waiters;
+
+ /* hint on current on-disk usage, in inodes or kbytes */
+ __u64 lse_usage;
+
+ /* time to trigger quota adjust */
+ __u64 lse_adjust_time;
+};
+
+/* In-memory entry for each enforced quota id
+ * A lquota_entry structure belong to a single lquota_site */
+struct lquota_entry {
+ /* link to site hash table */
+ cfs_hlist_node_t lqe_hash;
+
+ /* quota identifier associated with this entry */
+ union lquota_id lqe_id;
+
+ /* site this quota entry belongs to */
+ struct lquota_site *lqe_site;
+
+ /* reference counter */
+ cfs_atomic_t lqe_ref;
+
+ /* linked to list of lqes which:
+ * - need quota space adjustment on slave
+ * - need glimpse to be sent on master */
+ cfs_list_t lqe_link;
+
+ /* current quota settings/usage of this ID */
+ __u64 lqe_granted; /* granted limit, inodes or kbytes */
+ __u64 lqe_qunit; /* [ib]unit size, inodes or kbytes */
+ union {
+ struct lquota_mst_entry me; /* params specific to QMT */
+ struct lquota_slv_entry se; /* params specific to QSD */
+ } u;
+
+ /* flags describing the state of the lquota_entry */
+ unsigned long lqe_enforced:1,/* quota enforced or not */
+ lqe_uptodate:1,/* successfully read from disk */
+ lqe_edquot:1, /* id out of quota space on QMT */
+ lqe_gl:1, /* glimpse is in progress */
+ lqe_nopreacq:1;/* pre-acquire disabled */
+};
+
+/* Compartment within which lquota_entry are unique.
+ * lquota_entry structures are kept in a hash table and read from disk if not
+ * present. */
+struct lquota_site {
+ /* Hash table storing lquota_entry structures */
+ cfs_hash_t *lqs_hash;
+
+ /* Quota type, either user or group. */
+ int lqs_qtype;
+
+ /* Record whether this site is for a QMT or a slave */
+ int lqs_is_mst;
+
+ /* Vector of operations which can be done on lquota entry belonging to
+ * this quota site */
+ struct lquota_entry_operations *lqs_ops;
+
+ /* Backpointer to parent structure, either QMT pool info for master or
+ * QSD for slave */
+ void *lqs_parent;
+};
+
+#define lqe_hardlimit u.me.lme_hardlimit
+#define lqe_softlimit u.me.lme_softlimit
+#define lqe_gracetime u.me.lme_gracetime
+#define lqe_revoke_time u.me.lme_revoke_time
+#define lqe_sem u.me.lme_sem
+#define lqe_may_rel u.me.lme_may_rel
+
+#define lqe_qtune u.se.lse_qtune
+#define lqe_pending_write u.se.lse_pending_write
+#define lqe_waiting_write u.se.lse_waiting_write
+#define lqe_pending_rel u.se.lse_pending_rel
+#define lqe_pending_req u.se.lse_pending_req
+#define lqe_waiters u.se.lse_waiters
+#define lqe_lock u.se.lse_lock
+#define lqe_usage u.se.lse_usage
+#define lqe_adjust_time u.se.lse_adjust_time
+#define lqe_lockh u.se.lse_lockh
+
+#define LQUOTA_BUMP_VER 0x1
+#define LQUOTA_SET_VER 0x2
+
+/* helper routine to get/put reference on lquota_entry */
+static inline void lqe_getref(struct lquota_entry *lqe)
+{
+ cfs_atomic_inc(&lqe->lqe_ref);
+}
+
+static inline void lqe_putref(struct lquota_entry *lqe)
+{
+ LASSERT(atomic_read(&lqe->lqe_ref) > 0);
+ if (atomic_dec_and_test(&lqe->lqe_ref))
+ OBD_FREE_PTR(lqe);
+}
+
+static inline int lqe_is_master(struct lquota_entry *lqe)
+{
+ return lqe->lqe_site->lqs_is_mst;
+}
+
+/* lqe locking helpers */
+static inline void lqe_write_lock(struct lquota_entry *lqe)
+{
+ if (lqe_is_master(lqe))
+ cfs_down_write(&lqe->lqe_sem);
+ else
+ cfs_write_lock(&lqe->lqe_lock);
+}
+
+static inline void lqe_write_unlock(struct lquota_entry *lqe)
+{
+ if (lqe_is_master(lqe))
+ cfs_up_write(&lqe->lqe_sem);
+ else
+ cfs_write_unlock(&lqe->lqe_lock);
+}
+
+static inline void lqe_read_lock(struct lquota_entry *lqe)
+{
+ if (lqe_is_master(lqe))
+ cfs_down_read(&lqe->lqe_sem);
+ else
+ cfs_read_lock(&lqe->lqe_lock);
+}
+
+static inline void lqe_read_unlock(struct lquota_entry *lqe)
+{
+ if (lqe_is_master(lqe))
+ cfs_up_read(&lqe->lqe_sem);
+ else
+ cfs_read_unlock(&lqe->lqe_lock);
+}
+
/* Common data shared by quota-level handlers. This is allocated per-thread to
* reduce stack consumption */
struct lquota_thread_info {
return info;
}
+/* debugging macros */
+#ifdef LIBCFS_DEBUG
+#define lquota_lqe_debug(msgdata, mask, cdls, lqe, fmt, a...) do { \
+ CFS_CHECK_STACK(msgdata, mask, cdls); \
+ \
+ if (((mask) & D_CANTMASK) != 0 || \
+ ((libcfs_debug & (mask)) != 0 && \
+ (libcfs_subsystem_debug & DEBUG_SUBSYSTEM) != 0)) \
+ lquota_lqe_debug0(lqe, msgdata, fmt, ##a); \
+} while(0)
+
+void lquota_lqe_debug0(struct lquota_entry *lqe,
+ struct libcfs_debug_msg_data *data, const char *fmt, ...)
+ __attribute__ ((format (printf, 3, 4)));
+
+#define LQUOTA_DEBUG_LIMIT(mask, lqe, fmt, a...) do { \
+ static cfs_debug_limit_state_t _lquota_cdls; \
+ LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, mask, &_lquota_cdls); \
+ lquota_lqe_debug(&msgdata, mask, &_lquota_cdls, lqe, "$$$ "fmt" ", \
+ ##a); \
+} while (0)
+
+#define LQUOTA_ERROR(lqe, fmt, a...) LQUOTA_DEBUG_LIMIT(D_ERROR, lqe, fmt, ## a)
+#define LQUOTA_WARN(lqe, fmt, a...) \
+ LQUOTA_DEBUG_LIMIT(D_WARNING, lqe, fmt, ## a)
+#define LQUOTA_CONSOLE(lqe, fmt, a...) \
+ LQUOTA_DEBUG_LIMIT(D_CONSOLE, lqe, fmt, ## a)
+
+#define LQUOTA_DEBUG(lock, fmt, a...) do { \
+ LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_QUOTA, NULL); \
+ lquota_lqe_debug(&msgdata, D_QUOTA, NULL, lqe, "$$$ "fmt" ", ##a); \
+} while (0)
+#else /* !LIBCFS_DEBUG */
+# define LQUOTA_DEBUG(lqe, fmt, a...) ((void)0)
+# define LQUOTA_ERROR(lqe, fmt, a...) ((void)0)
+# define LQUOTA_WARN(lqe, fmt, a...) ((void)0)
+# define LQUOTA_CONSOLE(lqe, fmt, a...) ((void)0)
+# define lquota_lqe_debug(cdls, level, lqe, file, func, line, fmt, a...) \
+ ((void)0)
+#endif
+
/* lquota_lib.c */
struct dt_object *acct_obj_lookup(const struct lu_env *, struct dt_device *,
int);
int lquota_extract_fid(struct lu_fid *, int *, int *, int *);
const struct dt_index_features *glb_idx_feature(struct lu_fid *);
+/* lquota_entry.c */
+/* site create/destroy */
+struct lquota_site *lquota_site_alloc(const struct lu_env *, void *, bool,
+ short, struct lquota_entry_operations *);
+void lquota_site_free(const struct lu_env *, struct lquota_site *);
+/* quota entry operations */
+struct lquota_entry *lqe_locate(const struct lu_env *, struct lquota_site *,
+ union lquota_id *);
+
/* lquota_disk.c */
struct dt_object *lquota_disk_dir_find_create(const struct lu_env *,
struct dt_device *,
/* lproc_quota.c */
extern struct file_operations lprocfs_quota_seq_fops;
-
-/* quota_interface.c
- * old quota module initialization routines, to be removed */
-int init_lustre_quota(void);
-void exit_lustre_quota(void);
-
#endif /* _LQUOTA_INTERNAL_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff