LU-7734 lnet: set primary NID in ptlrpc_connection_get()

[fs/lustre-release.git] / lustre / quota / qmt_internal.h

diff --git a/lustre/quota/qmt_internal.h b/lustre/quota/qmt_internal.h
index d85bebe..c3f7fd6 100644 (file)
--- a/lustre/quota/qmt_internal.h
+++ b/lustre/quota/qmt_internal.h
@@ -21,15 +21,15 @@
  * GPL HEADER END
  */
 /*
- * Copyright (c) 2012 Intel, Inc.
+ * Copyright (c) 2012, 2016, Intel Corporation.
  * Use is subject to license terms.
  */
 
-#include "lquota_internal.h"
-
 #ifndef _QMT_INTERNAL_H
 #define _QMT_INTERNAL_H
 
+#include "lquota_internal.h"
+
 /*
  * The Quota Master Target Device.
  * The qmt is responsible for:
@@ -65,19 +65,19 @@ struct qmt_device {
         * Once we support quota on non-default pools, then more pools will
         * be added to this hash table and pool master setup would have to be
         * handled via configuration logs */
-       cfs_hash_t              *qmt_pool_hash;
+       struct cfs_hash         *qmt_pool_hash;
 
        /* List of pools managed by this master target */
-       cfs_list_t               qmt_pool_list;
+       struct list_head         qmt_pool_list;
 
        /* procfs root directory for this qmt */
-       cfs_proc_dir_entry_t    *qmt_proc;
+       struct proc_dir_entry   *qmt_proc;
 
        /* dedicated thread in charge of space rebalancing */
        struct ptlrpc_thread     qmt_reba_thread;
 
        /* list of lqe entry which need space rebalancing */
-       cfs_list_t               qmt_reba_list;
+       struct list_head         qmt_reba_list;
 
        /* lock protecting rebalancing list */
        spinlock_t               qmt_reba_lock;
@@ -96,10 +96,10 @@ struct qmt_device {
  */
 struct qmt_pool_info {
        /* link to qmt's pool hash */
-       cfs_hlist_node_t         qpi_hash;
+       struct hlist_node        qpi_hash;
 
        /* chained list of all pools managed by the same qmt */
-       cfs_list_t               qpi_linkage;
+       struct list_head         qpi_linkage;
 
        /* Pool key composed of pool_id | (pool_type << 16)
         * Only pool ID 0 is supported for now and the pool type is either
@@ -108,7 +108,7 @@ struct qmt_pool_info {
        __u32                    qpi_key;
 
        /* track users of this pool instance */
-       cfs_atomic_t             qpi_ref;
+       atomic_t                 qpi_ref;
 
        /* back pointer to master target
         * immutable after creation. */
@@ -130,7 +130,7 @@ struct qmt_pool_info {
        struct lquota_entry     *qpi_grace_lqe[MAXQUOTAS];
 
        /* procfs root directory for this pool */
-       cfs_proc_dir_entry_t    *qpi_proc;
+       struct proc_dir_entry   *qpi_proc;
 
        /* pool directory where all indexes related to this pool instance are
         * stored */
@@ -139,6 +139,22 @@ struct qmt_pool_info {
        /* Global quota parameters which apply to all quota type */
        /* the least value of qunit */
        unsigned long            qpi_least_qunit;
+
+       /* Least value of qunit when soft limit is exceeded.
+        *
+        * When soft limit is exceeded, qunit will be shrinked to least_qunit
+        * (1M for block limit), that results in significant write performance
+        * drop since the client will turn to sync write from now on.
+        *
+        * To retain the write performance in an acceptable level, we choose
+        * to sacrifice grace time accuracy a bit and use a larger least_qunit
+        * when soft limit is exceeded. It's (qpi_least_qunit * 4) by default,
+        * and user may enlarge it via procfs to get even better performance
+        * (with the cost of losing more grace time accuracy).
+        *
+        * See qmt_calc_softlimit().
+        */
+       unsigned long            qpi_soft_least_qunit;
 };
 
 /*
@@ -248,21 +264,32 @@ static inline void qmt_restore(struct lquota_entry *lqe,
                (slv) -= (cnt);              \
        } while (0)
 
-/* helper routine returning true when the id has run out of quota space, which
- * means that it has either:
- * - reached hardlimit
- * OR
- * - reached softlimit and grace time expired already */
-static inline bool qmt_space_exhausted(struct lquota_entry *lqe, __u64 now)
+/* helper routine returning true when reached hardlimit */
+static inline bool qmt_hard_exhausted(struct lquota_entry *lqe)
 {
        if (lqe->lqe_hardlimit != 0 && lqe->lqe_granted >= lqe->lqe_hardlimit)
                return true;
+       return false;
+}
+
+/* helper routine returning true when reached softlimit */
+static inline bool qmt_soft_exhausted(struct lquota_entry *lqe, __u64 now)
+{
        if (lqe->lqe_softlimit != 0 && lqe->lqe_granted > lqe->lqe_softlimit &&
            lqe->lqe_gracetime != 0 && now >= lqe->lqe_gracetime)
                return true;
        return false;
 }
 
+/* helper routine returning true when the id has run out of quota space:
+ * - reached hardlimit
+ * OR
+ * - reached softlimit and grace time expired already */
+static inline bool qmt_space_exhausted(struct lquota_entry *lqe, __u64 now)
+{
+       return (qmt_hard_exhausted(lqe) || qmt_soft_exhausted(lqe, now));
+}
+
 /* number of seconds to wait for slaves to release quota space after
  * rebalancing */
 #define QMT_REBA_TIMEOUT 2