* GPL HEADER END
*/
/*
- * Copyright (c) 2012, 2014, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
* Use is subject to license terms.
*
* Author: Johann Lombardi <johann.lombardi@intel.com>
#include <linux/kthread.h>
#include "qsd_internal.h"
-extern struct kmem_cache *upd_kmem;
-
/*
* Allocate and fill an qsd_upd_rec structure to be processed by the writeback
* thread.
if (!qsd->qsd_stopping) {
list_add_tail(&upd->qur_link, &qsd->qsd_upd_list);
/* wake up the upd thread */
- wake_up(&qsd->qsd_upd_thread.t_ctl_waitq);
+ if (qsd->qsd_upd_task)
+ wake_up_process(qsd->qsd_upd_task);
} else {
CWARN("%s: discard update.\n", qsd->qsd_svname);
if (upd->qur_lqe)
GOTO(out, rc);
/* refresh usage */
qsd_refresh_usage(env, lqe);
+
+ spin_lock(&qqi->qqi_qsd->qsd_adjust_lock);
+ lqe->lqe_adjust_time = 0;
+ spin_unlock(&qqi->qqi_qsd->qsd_adjust_lock);
+
/* Report usage asynchronously */
rc = qsd_adjust(env, lqe);
if (rc)
rc = qsd_update_index(env, qqi, &upd->qur_qid, upd->qur_global,
upd->qur_ver, &upd->qur_rec);
out:
+ if (upd->qur_global && rc == 0 &&
+ upd->qur_rec.lqr_glb_rec.qbr_softlimit == 0 &&
+ upd->qur_rec.lqr_glb_rec.qbr_hardlimit == 0 &&
+ (LQUOTA_FLAG(upd->qur_rec.lqr_glb_rec.qbr_time) &
+ LQUOTA_FLAG_DEFAULT)) {
+ lqe->lqe_is_default = true;
+ if (qqi->qqi_default_softlimit == 0 &&
+ qqi->qqi_default_hardlimit == 0)
+ lqe->lqe_enforced = false;
+ else
+ lqe->lqe_enforced = true;
+
+ LQUOTA_DEBUG(lqe, "update to use default quota");
+ }
+
if (lqe && !IS_ERR(lqe)) {
lqe_putref(lqe);
upd->qur_lqe = NULL;
}
spin_unlock(&qsd->qsd_adjust_lock);
- if (added)
- wake_up(&qsd->qsd_upd_thread.t_ctl_waitq);
- else
+ if (!added)
lqe_putref(lqe);
+ else {
+ read_lock(&qsd->qsd_lock);
+ if (qsd->qsd_upd_task)
+ wake_up_process(qsd->qsd_upd_task);
+ read_unlock(&qsd->qsd_lock);
+ }
}
/* return true if there is pending writeback records or the pending
struct lquota_entry *lqe;
lqe = list_entry(qsd->qsd_adjust_list.next,
struct lquota_entry, lqe_link);
- if (ktime_get_seconds() > lqe->lqe_adjust_time)
+ if (ktime_get_seconds() >= lqe->lqe_adjust_time)
job_pending = true;
}
spin_unlock(&qsd->qsd_adjust_lock);
return job_pending;
}
-static int qsd_upd_thread(void *arg)
+struct qsd_upd_args {
+ struct qsd_instance *qua_inst;
+ struct lu_env qua_env;
+ struct completion *qua_started;
+};
+
+#ifndef TASK_IDLE
+/* This identity is only safe inside kernel threads, or other places where
+ * all signals are disabled. So it is placed here rather than in an include
+ * file.
+ * TASK_IDLE was added in v4.1-rc4-43-g80ed87c8a9ca so this can be removed
+ * when we no longer support kernels older than that.
+ */
+#define TASK_IDLE TASK_INTERRUPTIBLE
+#endif
+
+static int qsd_upd_thread(void *_args)
{
- struct qsd_instance *qsd = (struct qsd_instance *)arg;
- struct ptlrpc_thread *thread = &qsd->qsd_upd_thread;
- struct l_wait_info lwi;
- struct list_head queue;
+ struct qsd_upd_args *args = _args;
+ struct qsd_instance *qsd = args->qua_inst;
+ LIST_HEAD(queue);
struct qsd_upd_rec *upd, *n;
- struct lu_env *env;
+ struct lu_env *env = &args->qua_env;
int qtype, rc = 0;
bool uptodate;
struct lquota_entry *lqe;
time64_t cur_time;
ENTRY;
- OBD_ALLOC_PTR(env);
- if (env == NULL)
- RETURN(-ENOMEM);
-
- rc = lu_env_init(env, LCT_DT_THREAD);
- if (rc) {
- CERROR("%s: cannot init env: rc = %d\n", qsd->qsd_svname, rc);
- OBD_FREE_PTR(env);
- RETURN(rc);
- }
+ complete(args->qua_started);
+ while (({set_current_state(TASK_IDLE);
+ !kthread_should_stop(); })) {
- thread_set_flags(thread, SVC_RUNNING);
- wake_up(&thread->t_ctl_waitq);
-
- INIT_LIST_HEAD(&queue);
- lwi = LWI_TIMEOUT(cfs_time_seconds(QSD_WB_INTERVAL), NULL, NULL);
- while (1) {
- l_wait_event(thread->t_ctl_waitq,
- qsd_job_pending(qsd, &queue, &uptodate) ||
- !thread_is_running(thread), &lwi);
+ if (!qsd_job_pending(qsd, &queue, &uptodate))
+ schedule_timeout(cfs_time_seconds(QSD_WB_INTERVAL));
+ __set_current_state(TASK_RUNNING);
list_for_each_entry_safe(upd, n, &queue, qur_link) {
list_del_init(&upd->qur_link);
list_del_init(&lqe->lqe_link);
spin_unlock(&qsd->qsd_adjust_lock);
- if (thread_is_running(thread) && uptodate) {
+ if (!kthread_should_stop() && uptodate) {
qsd_refresh_usage(env, lqe);
if (lqe->lqe_adjust_time == 0)
qsd_id_lock_cancel(env, lqe);
}
spin_unlock(&qsd->qsd_adjust_lock);
- if (!thread_is_running(thread))
- break;
-
- if (uptodate)
+ if (uptodate || kthread_should_stop())
continue;
for (qtype = USRQUOTA; qtype < LL_MAXQUOTAS; qtype++)
qsd_start_reint_thread(qsd->qsd_type_array[qtype]);
}
+ __set_current_state(TASK_RUNNING);
+
lu_env_fini(env);
- OBD_FREE_PTR(env);
- thread_set_flags(thread, SVC_STOPPED);
- wake_up(&thread->t_ctl_waitq);
+ OBD_FREE_PTR(args);
+
RETURN(rc);
}
int qsd_start_upd_thread(struct qsd_instance *qsd)
{
- struct ptlrpc_thread *thread = &qsd->qsd_upd_thread;
- struct l_wait_info lwi = { 0 };
- struct task_struct *task;
+ struct qsd_upd_args *args;
+ struct task_struct *task;
+ DECLARE_COMPLETION_ONSTACK(started);
+ int rc;
ENTRY;
- task = kthread_run(qsd_upd_thread, (void *)qsd,
- "lquota_wb_%s", qsd->qsd_svname);
+ OBD_ALLOC_PTR(args);
+ if (args == NULL)
+ RETURN(-ENOMEM);
+
+ rc = lu_env_init(&args->qua_env, LCT_DT_THREAD);
+ if (rc) {
+ CERROR("%s: cannot init env: rc = %d\n", qsd->qsd_svname, rc);
+ goto out_free;
+ }
+ args->qua_inst = qsd;
+ args->qua_started = &started;
+
+ task = kthread_create(qsd_upd_thread, args,
+ "lquota_wb_%s", qsd->qsd_svname);
if (IS_ERR(task)) {
- CERROR("fail to start quota update thread: rc = %ld\n",
- PTR_ERR(task));
- thread_set_flags(thread, SVC_STOPPED);
- RETURN(PTR_ERR(task));
+ rc = PTR_ERR(task);
+ CERROR("fail to start quota update thread: rc = %d\n", rc);
+ goto out_fini;
}
+ qsd->qsd_upd_task = task;
+ wake_up_process(task);
+ wait_for_completion(&started);
- l_wait_event(thread->t_ctl_waitq,
- thread_is_running(thread) || thread_is_stopped(thread),
- &lwi);
RETURN(0);
+
+out_fini:
+ lu_env_fini(&args->qua_env);
+out_free:
+ OBD_FREE_PTR(args);
+ RETURN(rc);
}
static void qsd_cleanup_deferred(struct qsd_instance *qsd)
void qsd_stop_upd_thread(struct qsd_instance *qsd)
{
- struct ptlrpc_thread *thread = &qsd->qsd_upd_thread;
- struct l_wait_info lwi = { 0 };
+ struct task_struct *task;
- if (!thread_is_stopped(thread)) {
- thread_set_flags(thread, SVC_STOPPING);
- wake_up(&thread->t_ctl_waitq);
+ write_lock(&qsd->qsd_lock);
+ task = qsd->qsd_upd_task;
+ qsd->qsd_upd_task = NULL;
+ write_unlock(&qsd->qsd_lock);
+ if (task)
+ kthread_stop(task);
- l_wait_event(thread->t_ctl_waitq, thread_is_stopped(thread),
- &lwi);
- }
qsd_cleanup_deferred(qsd);
qsd_cleanup_adjust(qsd);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff