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LU-9679 modules: Use LIST_HEAD for declaring list_heads
[fs/lustre-release.git] / lustre / quota / qsd_config.c
index 489034b..ed3415e 100644 (file)
  * GPL HEADER END
  */
 /*
- * Copyright (c) 2012 Intel, Inc.
+ * Copyright (c) 2012, 2014, Intel Corporation.
  * Use is subject to license terms.
  *
  * Author: Johann Lombardi <johann.lombardi@intel.com>
  * Author: Niu    Yawei    <yawei.niu@intel.com>
  */
 
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
-
 #define DEBUG_SUBSYSTEM S_LQUOTA
 
 #include <obd_class.h>
-#include <lustre_param.h>
+#include <uapi/linux/lustre/lustre_param.h>
 
 #include "qsd_internal.h"
 
-static CFS_LIST_HEAD(qfs_list);
+static LIST_HEAD(qfs_list);
 /* protect the qfs_list */
 static DEFINE_SPINLOCK(qfs_list_lock);
 
@@ -57,8 +53,8 @@ void qsd_put_fsinfo(struct qsd_fsinfo *qfs)
        LASSERT(qfs->qfs_ref > 0);
        qfs->qfs_ref--;
        if (qfs->qfs_ref == 0) {
-               LASSERT(cfs_list_empty(&qfs->qfs_qsd_list));
-               cfs_list_del(&qfs->qfs_link);
+               LASSERT(list_empty(&qfs->qfs_qsd_list));
+               list_del(&qfs->qfs_link);
                OBD_FREE_PTR(qfs);
        }
        spin_unlock(&qfs_list_lock);
@@ -92,15 +88,15 @@ struct qsd_fsinfo *qsd_get_fsinfo(char *name, bool create)
                if (new == NULL)
                        RETURN(NULL);
 
-               sema_init(&new->qfs_sem, 1);
-               CFS_INIT_LIST_HEAD(&new->qfs_qsd_list);
+               mutex_init(&new->qfs_mutex);
+               INIT_LIST_HEAD(&new->qfs_qsd_list);
                strcpy(new->qfs_name, name);
                new->qfs_ref = 1;
        }
 
        /* search in the fsinfo list */
        spin_lock(&qfs_list_lock);
-       cfs_list_for_each_entry(qfs, &qfs_list, qfs_link) {
+       list_for_each_entry(qfs, &qfs_list, qfs_link) {
                if (!strcmp(qfs->qfs_name, name)) {
                        qfs->qfs_ref++;
                        goto out;
@@ -111,7 +107,7 @@ struct qsd_fsinfo *qsd_get_fsinfo(char *name, bool create)
 
        if (new) {
                /* not found, but we were asked to create a new one */
-               cfs_list_add_tail(&new->qfs_link, &qfs_list);
+               list_add_tail(&new->qfs_link, &qfs_list);
                qfs = new;
                new = NULL;
        }
@@ -123,35 +119,13 @@ out:
        RETURN(qfs);
 }
 
-/*
- * Quota configuration handlers in charge of processing all per-filesystem quota
- * parameters set via conf_param.
- *
- * \param lcfg - quota configuration log to be processed
- */
-int qsd_process_config(struct lustre_cfg *lcfg)
+int qsd_config(char *valstr, char *fsname, int pool)
 {
-       struct qsd_fsinfo       *qfs;
-       char                    *fsname = lustre_cfg_string(lcfg, 0);
-       char                    *cfgstr = lustre_cfg_string(lcfg, 1);
-       char                    *keystr, *valstr;
-       int                      rc, pool, enabled = 0;
-       bool                     reint = false;
-       ENTRY;
-
-       CDEBUG(D_QUOTA, "processing quota parameter: fs:%s cfgstr:%s\n", fsname,
-              cfgstr);
-
-       if (class_match_param(cfgstr, PARAM_QUOTA, &keystr) != 0)
-               RETURN(-EINVAL);
-
-       if (!class_match_param(keystr, QUOTA_METAPOOL_NAME, &valstr))
-               pool = LQUOTA_RES_MD;
-       else if (!class_match_param(keystr, QUOTA_DATAPOOL_NAME, &valstr))
-               pool = LQUOTA_RES_DT;
-       else
-               RETURN(-EINVAL);
+       struct qsd_fsinfo *qfs;
+       int rc, enabled = 0, old_enabled = 0;
+       bool reint = false;
 
+       ENTRY;
        qfs = qsd_get_fsinfo(fsname, 0);
        if (qfs == NULL) {
                CERROR("failed to find quota filesystem information for %s\n",
@@ -163,8 +137,10 @@ int qsd_process_config(struct lustre_cfg *lcfg)
                enabled |= 1 << USRQUOTA;
        if (strchr(valstr, 'g'))
                enabled |= 1 << GRPQUOTA;
+       if (strchr(valstr, 'p'))
+               enabled |= 1 << PRJQUOTA;
 
-       down(&qfs->qfs_sem);
+       mutex_lock(&qfs->qfs_mutex);
        if (qfs->qfs_enabled[pool - LQUOTA_FIRST_RES] == enabled)
                /* no change required */
                GOTO(out, rc = 0);
@@ -172,6 +148,7 @@ int qsd_process_config(struct lustre_cfg *lcfg)
        if ((qfs->qfs_enabled[pool - LQUOTA_FIRST_RES] & enabled) != enabled)
                reint = true;
 
+       old_enabled = qfs->qfs_enabled[pool - LQUOTA_FIRST_RES];
        qfs->qfs_enabled[pool - LQUOTA_FIRST_RES] = enabled;
 
        /* trigger reintegration for all qsd */
@@ -179,7 +156,7 @@ int qsd_process_config(struct lustre_cfg *lcfg)
                struct qsd_instance     *qsd;
                struct qsd_qtype_info   *qqi;
 
-               cfs_list_for_each_entry(qsd, &qfs->qfs_qsd_list, qsd_link) {
+               list_for_each_entry(qsd, &qfs->qfs_qsd_list, qsd_link) {
                        bool    skip = false;
                        int     type;
 
@@ -192,14 +169,60 @@ int qsd_process_config(struct lustre_cfg *lcfg)
                        if (skip)
                                continue;
 
-                       for (type = USRQUOTA; type < MAXQUOTAS; type++) {
+                       for (type = USRQUOTA; type < LL_MAXQUOTAS; type++) {
                                qqi = qsd->qsd_type_array[type];
+                               /* only trigger reintegration if this
+                                * type of quota is not enabled before */
+                               if ((old_enabled & 1 << type) ||
+                                   !(enabled & 1 << type))
+                                       continue;
+
+                               if (qqi->qqi_acct_failed) {
+                                       LCONSOLE_ERROR("%s: can't enable quota "
+                                                      "enforcement since space "
+                                                      "accounting isn't functional. "
+                                                      "Please run tunefs.lustre "
+                                                      "--quota on an unmounted "
+                                                      "filesystem if not done already"
+                                                      "\n", qsd->qsd_svname);
+                                       continue;
+                               }
                                qsd_start_reint_thread(qqi);
                        }
                }
        }
 out:
-       up(&qfs->qfs_sem);
+       mutex_unlock(&qfs->qfs_mutex);
        qsd_put_fsinfo(qfs);
        RETURN(0);
 }
+
+/*
+ * Quota configuration handlers in charge of processing all per-filesystem quota
+ * parameters set via conf_param.
+ *
+ * \param lcfg - quota configuration log to be processed
+ */
+int qsd_process_config(struct lustre_cfg *lcfg)
+{
+       char *fsname = lustre_cfg_string(lcfg, 0);
+       char *cfgstr = lustre_cfg_string(lcfg, 1);
+       char *keystr, *valstr;
+       int pool;
+
+       ENTRY;
+       CDEBUG(D_QUOTA, "processing quota parameter: fs:%s cfgstr:%s\n", fsname,
+              cfgstr);
+
+       if (class_match_param(cfgstr, PARAM_QUOTA, &keystr) != 0)
+               RETURN(-EINVAL);
+
+       if (!class_match_param(keystr, QUOTA_METAPOOL_NAME, &valstr))
+               pool = LQUOTA_RES_MD;
+       else if (!class_match_param(keystr, QUOTA_DATAPOOL_NAME, &valstr))
+               pool = LQUOTA_RES_DT;
+       else
+               RETURN(-EINVAL);
+
+       return qsd_config(valstr, fsname, pool);
+}