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13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
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17 * version 2 along with this program; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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24 * Copyright (c) 2012, 2014, Intel Corporation.
25 * Use is subject to license terms.
29 #include <lustre_quota.h>
31 #ifndef _LQUOTA_INTERNAL_H
32 #define _LQUOTA_INTERNAL_H
35 static inline char *qtype_name(int qtype)
47 #define RES_NAME(res) ((res) == LQUOTA_RES_MD ? "md" : "dt")
49 #define QIF_IFLAGS (QIF_INODES | QIF_ITIME | QIF_ILIMITS)
50 #define QIF_BFLAGS (QIF_SPACE | QIF_BTIME | QIF_BLIMITS)
52 /* The biggest filename are the one used for slave index which are in the form
53 * of 0x%x-%s,glb_fid.f_oid,slv_uuid, that's to say:
54 * 2(0x) + 8(f_oid) + 1(-) + 40(UUID_MAX) which means 51 chars + '\0' */
55 #define LQUOTA_NAME_MAX 52
57 /* reserved OID in FID_SEQ_QUOTA for local objects */
58 enum lquota_local_oid {
59 LQUOTA_USR_OID = 1UL, /* slave index copy for user quota */
60 LQUOTA_GRP_OID = 2UL, /* slave index copy for group quota */
61 /* all OIDs after this are allocated dynamically by the QMT */
62 LQUOTA_GENERATED_OID = 4096UL,
65 static inline __u32 qtype2slv_oid(int qtype)
69 return LQUOTA_USR_OID;
71 return LQUOTA_GRP_OID;
74 LASSERTF(0, "invalid quota type: %d", qtype);
75 return LQUOTA_USR_OID;
79 * lquota_entry support
82 /* Common operations supported by a lquota_entry */
83 struct lquota_entry_operations {
84 /* Initialize specific fields of a lquota entry */
85 void (*lqe_init)(struct lquota_entry *, void *arg);
87 /* Read quota settings from disk and update lquota entry */
88 int (*lqe_read)(const struct lu_env *, struct lquota_entry *,
91 /* Print debug information about a given lquota entry */
92 void (*lqe_debug)(struct lquota_entry *, void *,
93 struct libcfs_debug_msg_data *, const char *,
97 /* Per-ID information specific to the quota master target */
98 struct lquota_mst_entry {
99 /* global hard limit, in inodes or kbytes */
102 /* global quota soft limit, in inodes or kbytes */
105 /* grace time, in seconds */
108 /* last time we glimpsed */
109 __u64 lme_revoke_time;
111 /* r/w semaphore used to protect concurrent access to the quota
112 * parameters which are stored on disk */
113 struct rw_semaphore lme_sem;
115 /* quota space that may be released after glimpse */
119 /* Per-ID information specific to the quota slave */
120 struct lquota_slv_entry {
121 /* [ib]tune size, inodes or kbytes */
124 /* per-ID lock handle */
125 struct lustre_handle lse_lockh;
127 /* pending write which were granted quota space but haven't completed
128 * yet, in inodes or kbytes. */
129 __u64 lse_pending_write;
131 /* writes waiting for quota space, in inodes or kbytes. */
132 __u64 lse_waiting_write;
134 /* pending release, in inodes or kbytes */
135 __u64 lse_pending_rel;
137 /* pending dqacq/dqrel requests. */
138 unsigned int lse_pending_req;
140 /* rw spinlock protecting in-memory counters (i.e. lse_pending*) */
143 /* waiter for pending request done */
144 wait_queue_head_t lse_waiters;
146 /* hint on current on-disk usage, in inodes or kbytes */
149 /* time to trigger quota adjust */
150 __u64 lse_adjust_time;
152 /* return code of latest acquire RPC */
155 /* when latest acquire RPC completed */
158 /* when latest edquot set */
159 __u64 lse_edquot_time;
162 /* In-memory entry for each enforced quota id
163 * A lquota_entry structure belong to a single lquota_site */
164 struct lquota_entry {
165 /* link to site hash table */
166 struct hlist_node lqe_hash;
168 /* quota identifier associated with this entry */
169 union lquota_id lqe_id;
171 /* site this quota entry belongs to */
172 struct lquota_site *lqe_site;
174 /* reference counter */
177 /* linked to list of lqes which:
178 * - need quota space adjustment on slave
179 * - need glimpse to be sent on master */
180 struct list_head lqe_link;
182 /* current quota settings/usage of this ID */
183 __u64 lqe_granted; /* granted limit, inodes or kbytes */
184 __u64 lqe_qunit; /* [ib]unit size, inodes or kbytes */
186 struct lquota_mst_entry me; /* params specific to QMT */
187 struct lquota_slv_entry se; /* params specific to QSD */
190 /* flags describing the state of the lquota_entry */
191 unsigned long lqe_enforced:1,/* quota enforced or not */
192 lqe_uptodate:1,/* successfully read from disk */
193 lqe_edquot:1, /* id out of quota space on QMT */
194 lqe_gl:1, /* glimpse is in progress */
195 lqe_nopreacq:1;/* pre-acquire disabled */
198 /* Compartment within which lquota_entry are unique.
199 * lquota_entry structures are kept in a hash table and read from disk if not
202 /* Hash table storing lquota_entry structures */
203 struct cfs_hash *lqs_hash;
205 /* Quota type, either user or group. */
208 /* Record whether this site is for a QMT or a slave */
211 /* Vector of operations which can be done on lquota entry belonging to
213 struct lquota_entry_operations *lqs_ops;
215 /* Backpointer to parent structure, either QMT pool info for master or
220 #define lqe_hardlimit u.me.lme_hardlimit
221 #define lqe_softlimit u.me.lme_softlimit
222 #define lqe_gracetime u.me.lme_gracetime
223 #define lqe_revoke_time u.me.lme_revoke_time
224 #define lqe_sem u.me.lme_sem
225 #define lqe_may_rel u.me.lme_may_rel
227 #define lqe_qtune u.se.lse_qtune
228 #define lqe_pending_write u.se.lse_pending_write
229 #define lqe_waiting_write u.se.lse_waiting_write
230 #define lqe_pending_rel u.se.lse_pending_rel
231 #define lqe_pending_req u.se.lse_pending_req
232 #define lqe_waiters u.se.lse_waiters
233 #define lqe_lock u.se.lse_lock
234 #define lqe_usage u.se.lse_usage
235 #define lqe_adjust_time u.se.lse_adjust_time
236 #define lqe_lockh u.se.lse_lockh
237 #define lqe_acq_rc u.se.lse_acq_rc
238 #define lqe_acq_time u.se.lse_acq_time
239 #define lqe_edquot_time u.se.lse_edquot_time
241 #define LQUOTA_BUMP_VER 0x1
242 #define LQUOTA_SET_VER 0x2
244 extern struct kmem_cache *lqe_kmem;
246 /* helper routine to get/put reference on lquota_entry */
247 static inline void lqe_getref(struct lquota_entry *lqe)
249 LASSERT(lqe != NULL);
250 atomic_inc(&lqe->lqe_ref);
253 static inline void lqe_putref(struct lquota_entry *lqe)
255 LASSERT(lqe != NULL);
256 LASSERT(atomic_read(&lqe->lqe_ref) > 0);
257 if (atomic_dec_and_test(&lqe->lqe_ref))
258 OBD_SLAB_FREE_PTR(lqe, lqe_kmem);
261 static inline int lqe_is_master(struct lquota_entry *lqe)
263 return lqe->lqe_site->lqs_is_mst;
266 /* lqe locking helpers */
267 static inline void lqe_write_lock(struct lquota_entry *lqe)
269 if (lqe_is_master(lqe))
270 down_write(&lqe->lqe_sem);
272 write_lock(&lqe->lqe_lock);
275 static inline void lqe_write_unlock(struct lquota_entry *lqe)
277 if (lqe_is_master(lqe))
278 up_write(&lqe->lqe_sem);
280 write_unlock(&lqe->lqe_lock);
283 static inline void lqe_read_lock(struct lquota_entry *lqe)
285 if (lqe_is_master(lqe))
286 down_read(&lqe->lqe_sem);
288 read_lock(&lqe->lqe_lock);
291 static inline void lqe_read_unlock(struct lquota_entry *lqe)
293 if (lqe_is_master(lqe))
294 up_read(&lqe->lqe_sem);
296 read_unlock(&lqe->lqe_lock);
300 * Helper functions & prototypes
303 /* minimum qunit size, 1K inode for metadata pool and 1MB for data pool */
304 #define LQUOTA_LEAST_QUNIT(type) \
305 (type == LQUOTA_RES_MD ? (1 << 10) : toqb(OFD_MAX_BRW_SIZE))
307 static inline int lquota_over_fl(int qtype)
311 return QUOTA_FL_OVER_USRQUOTA;
313 return QUOTA_FL_OVER_GRPQUOTA;
316 LASSERTF(0, "invalid quota type: %d", qtype);
317 return QUOTA_FL_OVER_USRQUOTA;
320 /* Common data shared by quota-level handlers. This is allocated per-thread to
321 * reduce stack consumption */
322 struct lquota_thread_info {
323 union lquota_rec qti_rec;
324 struct lu_buf qti_lb;
325 struct lu_attr qti_attr;
326 struct dt_object_format qti_dof;
327 struct lu_fid qti_fid;
328 char qti_buf[LQUOTA_NAME_MAX];
331 #define qti_glb_rec qti_rec.lqr_glb_rec
332 #define qti_acct_rec qti_rec.lqr_acct_rec
333 #define qti_slv_rec qti_rec.lqr_slv_rec
335 #define LQUOTA_BUMP_VER 0x1
336 #define LQUOTA_SET_VER 0x2
338 extern struct lu_context_key lquota_thread_key;
340 /* extract lquota_threa_info context from environment */
342 struct lquota_thread_info *lquota_info(const struct lu_env *env)
344 struct lquota_thread_info *info;
346 info = lu_context_key_get(&env->le_ctx, &lquota_thread_key);
348 lu_env_refill((struct lu_env *)env);
349 info = lu_context_key_get(&env->le_ctx, &lquota_thread_key);
355 #define req_is_acq(flags) ((flags & QUOTA_DQACQ_FL_ACQ) != 0)
356 #define req_is_preacq(flags) ((flags & QUOTA_DQACQ_FL_PREACQ) != 0)
357 #define req_is_rel(flags) ((flags & QUOTA_DQACQ_FL_REL) != 0)
358 #define req_has_rep(flags) ((flags & QUOTA_DQACQ_FL_REPORT) != 0)
360 /* debugging macros */
362 #define lquota_lqe_debug(msgdata, mask, cdls, lqe, fmt, a...) do { \
363 CFS_CHECK_STACK(msgdata, mask, cdls); \
365 if (((mask) & D_CANTMASK) != 0 || \
366 ((libcfs_debug & (mask)) != 0 && \
367 (libcfs_subsystem_debug & DEBUG_SUBSYSTEM) != 0)) \
368 lquota_lqe_debug0(lqe, msgdata, fmt, ##a); \
371 void lquota_lqe_debug0(struct lquota_entry *lqe,
372 struct libcfs_debug_msg_data *data, const char *fmt, ...)
373 __attribute__ ((format (printf, 3, 4)));
375 #define LQUOTA_DEBUG_LIMIT(mask, lqe, fmt, a...) do { \
376 static struct cfs_debug_limit_state _lquota_cdls; \
377 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, mask, &_lquota_cdls); \
378 lquota_lqe_debug(&msgdata, mask, &_lquota_cdls, lqe, "$$$ "fmt" ", \
382 #define LQUOTA_ERROR(lqe, fmt, a...) LQUOTA_DEBUG_LIMIT(D_ERROR, lqe, fmt, ## a)
383 #define LQUOTA_WARN(lqe, fmt, a...) \
384 LQUOTA_DEBUG_LIMIT(D_WARNING, lqe, fmt, ## a)
385 #define LQUOTA_CONSOLE(lqe, fmt, a...) \
386 LQUOTA_DEBUG_LIMIT(D_CONSOLE, lqe, fmt, ## a)
388 #define LQUOTA_DEBUG(lock, fmt, a...) do { \
389 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_QUOTA, NULL); \
390 lquota_lqe_debug(&msgdata, D_QUOTA, NULL, lqe, "$$$ "fmt" ", ##a); \
392 #else /* !LIBCFS_DEBUG */
393 # define LQUOTA_DEBUG(lqe, fmt, a...) ((void)0)
394 # define LQUOTA_ERROR(lqe, fmt, a...) ((void)0)
395 # define LQUOTA_WARN(lqe, fmt, a...) ((void)0)
396 # define LQUOTA_CONSOLE(lqe, fmt, a...) ((void)0)
397 # define lquota_lqe_debug(cdls, level, lqe, file, func, line, fmt, a...) \
402 struct dt_object *acct_obj_lookup(const struct lu_env *, struct dt_device *,
404 void lquota_generate_fid(struct lu_fid *, int, int, int);
405 int lquota_extract_fid(const struct lu_fid *, int *, int *, int *);
406 const struct dt_index_features *glb_idx_feature(struct lu_fid *);
409 /* site create/destroy */
410 struct lquota_site *lquota_site_alloc(const struct lu_env *, void *, bool,
411 short, struct lquota_entry_operations *);
412 void lquota_site_free(const struct lu_env *, struct lquota_site *);
413 /* quota entry operations */
414 struct lquota_entry *lqe_locate(const struct lu_env *, struct lquota_site *,
418 struct dt_object *lquota_disk_dir_find_create(const struct lu_env *,
420 struct dt_object *, const char *);
421 struct dt_object *lquota_disk_glb_find_create(const struct lu_env *,
424 struct lu_fid *, bool);
425 struct dt_object *lquota_disk_slv_find_create(const struct lu_env *,
429 struct obd_uuid *, bool);
430 typedef int (*lquota_disk_slv_cb_t) (const struct lu_env *, struct lu_fid *,
431 char *, struct lu_fid *, void *);
432 int lquota_disk_for_each_slv(const struct lu_env *, struct dt_object *,
433 struct lu_fid *, lquota_disk_slv_cb_t, void *);
434 struct dt_object *lquota_disk_slv_find(const struct lu_env *,
435 struct dt_device *, struct dt_object *,
436 const struct lu_fid *,
438 int lquota_disk_read(const struct lu_env *, struct dt_object *,
439 union lquota_id *, struct dt_rec *);
440 int lquota_disk_declare_write(const struct lu_env *, struct thandle *,
441 struct dt_object *, union lquota_id *);
442 int lquota_disk_write(const struct lu_env *, struct thandle *,
443 struct dt_object *, union lquota_id *, struct dt_rec *,
445 int lquota_disk_update_ver(const struct lu_env *, struct dt_device *,
446 struct dt_object *, __u64);
447 int lquota_disk_write_glb(const struct lu_env *, struct dt_object *, __u64,
448 struct lquota_glb_rec *);
451 int qmt_glb_init(void);
452 void qmt_glb_fini(void);
455 extern struct file_operations lprocfs_quota_seq_fops;
458 int qsd_glb_init(void);
459 void qsd_glb_fini(void);
460 #endif /* _LQUOTA_INTERNAL_H */