#ifndef _LUSTRE_LQUOTA_H
#define _LUSTRE_LQUOTA_H
+struct lquota_id_info;
+struct lquota_trans;
+
/* Gather all quota record type in an union that can be used to read any records
* from disk. All fields of these records must be 64-bit aligned, otherwise the
* OSD layer may swab them incorrectly. */
#define QUOTA_DATAPOOL_NAME "ost="
/*
- * Quota information attached to a transaction
+ * Quota Master Target support
*/
-struct lquota_entry;
+/* Request handlers for quota master operations.
+ * This is used by the MDT to pass quota/lock requests to the quota master
+ * target. This won't be needed any more once the QMT is a real target and
+ * does not rely any more on the MDT service threads and namespace. */
+struct qmt_handlers {
+ /* Handle quotactl request from client. */
+ int (*qmth_quotactl)(const struct lu_env *, struct lu_device *,
+ struct obd_quotactl *);
-struct lquota_id_info {
- /* quota identifier */
- union lquota_id lqi_id;
+ /* Handle dqacq/dqrel request from slave. */
+ int (*qmth_dqacq)(const struct lu_env *, struct lu_device *,
+ struct ptlrpc_request *);
- /* USRQUOTA or GRPQUOTA for now, could be expanded for
- * directory quota or other types later. */
- int lqi_type;
+ /* LDLM intent policy associated with quota locks */
+ int (*qmth_intent_policy)(const struct lu_env *, struct lu_device *,
+ struct ptlrpc_request *, struct ldlm_lock **,
+ int);
- /* inodes or kbytes to be consumed or released, it could
- * be negative when releasing space. */
- long long lqi_space;
+ /* Initialize LVB of ldlm resource associated with quota objects */
+ int (*qmth_lvbo_init)(struct lu_device *, struct ldlm_resource *);
- /* quota slave entry structure associated with this ID */
- struct lquota_entry *lqi_qentry;
+ /* Update LVB of ldlm resource associated with quota objects */
+ int (*qmth_lvbo_update)(struct lu_device *, struct ldlm_resource *,
+ struct ptlrpc_request *, int);
- /* whether we are reporting blocks or inodes */
- bool lqi_is_blk;
-};
+ /* Return size of LVB to be packed in ldlm message */
+ int (*qmth_lvbo_size)(struct lu_device *, struct ldlm_lock *);
-/* Since we enforce only inode quota in meta pool (MDTs), and block quota in
- * data pool (OSTs), there are at most 4 quota ids being enforced in a single
- * transaction, which is chown transaction:
- * original uid and gid, new uid and gid.
- *
- * This value might need to be revised when directory quota is added. */
-#define QUOTA_MAX_TRANSIDS 4
+ /* Fill request buffer with lvb */
+ int (*qmth_lvbo_fill)(struct lu_device *, struct ldlm_lock *, void *,
+ int);
-/* all qids involved in a single transaction */
-struct lquota_trans {
- unsigned short lqt_id_cnt;
- struct lquota_id_info lqt_ids[QUOTA_MAX_TRANSIDS];
+ /* Free lvb associated with ldlm resource */
+ int (*qmth_lvbo_free)(struct lu_device *, struct ldlm_resource *);
};
-/* flags for quota local enforcement */
-#define QUOTA_FL_OVER_USRQUOTA 0x01
-#define QUOTA_FL_OVER_GRPQUOTA 0x02
-#define QUOTA_FL_SYNC 0x04
+/* actual handlers are defined in lustre/quota/qmt_handler.c */
+extern struct qmt_handlers qmt_hdls;
/*
* Quota enforcement support on slaves
void qsd_fini(const struct lu_env *, struct qsd_instance *);
-/* helper function used by MDT & OFD to retrieve quota accounting information
- * on slave */
-int lquotactl_slv(const struct lu_env *, struct dt_device *,
- struct obd_quotactl *);
-
/* XXX: dummy qsd_op_begin() & qsd_op_end(), will be replaced with the real
* one once all the enforcement code landed. */
static inline int qsd_op_begin(const struct lu_env *env,
struct lquota_trans *trans)
{
}
+
+/*
+ * Quota information attached to a transaction
+ */
+
+struct lquota_entry;
+
+struct lquota_id_info {
+ /* quota identifier */
+ union lquota_id lqi_id;
+
+ /* USRQUOTA or GRPQUOTA for now, could be expanded for
+ * directory quota or other types later. */
+ int lqi_type;
+
+ /* inodes or kbytes to be consumed or released, it could
+ * be negative when releasing space. */
+ long long lqi_space;
+
+ /* quota slave entry structure associated with this ID */
+ struct lquota_entry *lqi_qentry;
+
+ /* whether we are reporting blocks or inodes */
+ bool lqi_is_blk;
+};
+
+/* Since we enforce only inode quota in meta pool (MDTs), and block quota in
+ * data pool (OSTs), there are at most 4 quota ids being enforced in a single
+ * transaction, which is chown transaction:
+ * original uid and gid, new uid and gid.
+ *
+ * This value might need to be revised when directory quota is added. */
+#define QUOTA_MAX_TRANSIDS 4
+
+/* all qids involved in a single transaction */
+struct lquota_trans {
+ unsigned short lqt_id_cnt;
+ struct lquota_id_info lqt_ids[QUOTA_MAX_TRANSIDS];
+};
+
+/* flags for quota local enforcement */
+#define QUOTA_FL_OVER_USRQUOTA 0x01
+#define QUOTA_FL_OVER_GRPQUOTA 0x02
+#define QUOTA_FL_SYNC 0x04
+
+#define IS_LQUOTA_RES(res) \
+ (res->lr_name.name[LUSTRE_RES_ID_SEQ_OFF] == FID_SEQ_QUOTA || \
+ res->lr_name.name[LUSTRE_RES_ID_SEQ_OFF] == FID_SEQ_QUOTA_GLB)
+
+/* helper function used by MDT & OFD to retrieve quota accounting information
+ * on slave */
+int lquotactl_slv(const struct lu_env *, struct dt_device *,
+ struct obd_quotactl *);
#endif /* _LUSTRE_LQUOTA_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff