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LU-12930 various: use schedule_timeout_*interruptible
[fs/lustre-release.git] / lustre / lfsck / lfsck_lib.c
index 0581be4..9fe3a73 100644 (file)
@@ -33,6 +33,7 @@
 #include <linux/kthread.h>
 #include <linux/sched.h>
 #include <linux/list.h>
+#include <linux/delay.h>
 #include <lu_object.h>
 #include <dt_object.h>
 #include <md_object.h>
@@ -62,9 +63,9 @@ static void lfsck_key_fini(const struct lu_context *ctx,
 LU_CONTEXT_KEY_DEFINE(lfsck, LCT_MD_THREAD | LCT_DT_THREAD);
 LU_KEY_INIT_GENERIC(lfsck);
 
-static struct list_head lfsck_instance_list;
-static struct list_head lfsck_ost_orphan_list;
-static struct list_head lfsck_mdt_orphan_list;
+static LIST_HEAD(lfsck_instance_list);
+static LIST_HEAD(lfsck_ost_orphan_list);
+static LIST_HEAD(lfsck_mdt_orphan_list);
 static DEFINE_SPINLOCK(lfsck_instance_lock);
 
 const char *lfsck_flags_names[] = {
@@ -432,6 +433,36 @@ int lfsck_ibits_lock(const struct lu_env *env, struct lfsck_instance *lfsck,
 }
 
 /**
+ * Request the remote LOOKUP lock for the given object.
+ *
+ * If \a pobj is remote, the LOOKUP lock of \a obj is on the MDT where
+ * \a pobj is, acquire LOOKUP lock there.
+ *
+ * \param[in] env      pointer to the thread context
+ * \param[in] lfsck    pointer to the lfsck instance
+ * \param[in] pobj     pointer to parent dt_object
+ * \param[in] obj      pointer to the dt_object to be locked
+ * \param[out] lh      pointer to the lock handle
+ * \param[in] mode     the mode for the ldlm lock to be acquired
+ *
+ * \retval             0 for success
+ * \retval             negative error number on failure
+ */
+int lfsck_remote_lookup_lock(const struct lu_env *env,
+                            struct lfsck_instance *lfsck,
+                            struct dt_object *pobj, struct dt_object *obj,
+                            struct lustre_handle *lh, enum ldlm_mode mode)
+{
+       struct ldlm_res_id *resid = &lfsck_env_info(env)->lti_resid;
+
+       LASSERT(!lustre_handle_is_used(lh));
+
+       fid_build_reg_res_name(lfsck_dto2fid(obj), resid);
+       return __lfsck_ibits_lock(env, lfsck, pobj, resid, lh,
+                                 MDS_INODELOCK_LOOKUP, mode);
+}
+
+/**
  * Release the the specified ibits lock.
  *
  * If the lock has been acquired before, release it
@@ -1841,14 +1872,12 @@ bool __lfsck_set_speed(struct lfsck_instance *lfsck, __u32 limit)
        bool dirty = false;
 
        if (limit != LFSCK_SPEED_NO_LIMIT) {
-               if (limit > msecs_to_jiffies(MSEC_PER_SEC)) {
-                       lfsck->li_sleep_rate = limit /
-                                              msecs_to_jiffies(MSEC_PER_SEC);
+               if (limit > cfs_time_seconds(1)) {
+                       lfsck->li_sleep_rate = limit / cfs_time_seconds(1);
                        lfsck->li_sleep_jif = 1;
                } else {
                        lfsck->li_sleep_rate = 1;
-                       lfsck->li_sleep_jif = msecs_to_jiffies(MSEC_PER_SEC) /
-                                             limit;
+                       lfsck->li_sleep_jif = cfs_time_seconds(1) / limit;
                }
        } else {
                lfsck->li_sleep_jif = 0;
@@ -1866,16 +1895,12 @@ bool __lfsck_set_speed(struct lfsck_instance *lfsck, __u32 limit)
 void lfsck_control_speed(struct lfsck_instance *lfsck)
 {
        struct ptlrpc_thread *thread = &lfsck->li_thread;
-       struct l_wait_info    lwi;
 
        if (lfsck->li_sleep_jif > 0 &&
            lfsck->li_new_scanned >= lfsck->li_sleep_rate) {
-               lwi = LWI_TIMEOUT_INTR(lfsck->li_sleep_jif, NULL,
-                                      LWI_ON_SIGNAL_NOOP, NULL);
-
-               l_wait_event(thread->t_ctl_waitq,
-                            !thread_is_running(thread),
-                            &lwi);
+               wait_event_idle_timeout(thread->t_ctl_waitq,
+                                       !thread_is_running(thread),
+                                       lfsck->li_sleep_jif);
                lfsck->li_new_scanned = 0;
        }
 }
@@ -1884,16 +1909,12 @@ void lfsck_control_speed_by_self(struct lfsck_component *com)
 {
        struct lfsck_instance   *lfsck  = com->lc_lfsck;
        struct ptlrpc_thread    *thread = &lfsck->li_thread;
-       struct l_wait_info       lwi;
 
        if (lfsck->li_sleep_jif > 0 &&
            com->lc_new_scanned >= lfsck->li_sleep_rate) {
-               lwi = LWI_TIMEOUT_INTR(lfsck->li_sleep_jif, NULL,
-                                      LWI_ON_SIGNAL_NOOP, NULL);
-
-               l_wait_event(thread->t_ctl_waitq,
-                            !thread_is_running(thread),
-                            &lwi);
+               wait_event_idle_timeout(thread->t_ctl_waitq,
+                                       !thread_is_running(thread),
+                                       lfsck->li_sleep_jif);
                com->lc_new_scanned = 0;
        }
 }
@@ -2420,7 +2441,7 @@ int lfsck_async_request(const struct lu_env *env, struct obd_export *exp,
        *tmp = *lr;
        ptlrpc_request_set_replen(req);
 
-       laia = ptlrpc_req_async_args(req);
+       laia = ptlrpc_req_async_args(laia, req);
        *laia = *(struct lfsck_async_interpret_args *)args;
        if (laia->laia_com != NULL)
                lfsck_component_get(laia->laia_com);
@@ -2510,10 +2531,7 @@ int lfsck_start_assistant(const struct lu_env *env, struct lfsck_component *com,
 
        lad->lad_assistant_status = 0;
        lad->lad_post_result = 0;
-       lad->lad_to_post = 0;
-       lad->lad_to_double_scan = 0;
-       lad->lad_in_double_scan = 0;
-       lad->lad_exit = 0;
+       lad->lad_flags = 0;
        lad->lad_advance_lock = false;
        thread_set_flags(athread, 0);
 
@@ -2528,13 +2546,10 @@ int lfsck_start_assistant(const struct lu_env *env, struct lfsck_component *com,
                       "rc = %d\n", lfsck_lfsck2name(lfsck), lad->lad_name, rc);
                lfsck_thread_args_fini(lta);
        } else {
-               struct l_wait_info lwi = { 0 };
-
-               l_wait_event(mthread->t_ctl_waitq,
-                            thread_is_running(athread) ||
-                            thread_is_stopped(athread) ||
-                            !thread_is_starting(mthread),
-                            &lwi);
+               wait_event_idle(mthread->t_ctl_waitq,
+                               thread_is_running(athread) ||
+                               thread_is_stopped(athread) ||
+                               !thread_is_starting(mthread));
                if (unlikely(!thread_is_starting(mthread)))
                        /* stopped by race */
                        rc = -ESRCH;
@@ -2553,13 +2568,11 @@ int lfsck_checkpoint_generic(const struct lu_env *env,
        struct lfsck_assistant_data     *lad     = com->lc_data;
        struct ptlrpc_thread            *mthread = &com->lc_lfsck->li_thread;
        struct ptlrpc_thread            *athread = &lad->lad_thread;
-       struct l_wait_info               lwi     = { 0 };
 
-       l_wait_event(mthread->t_ctl_waitq,
-                    list_empty(&lad->lad_req_list) ||
-                    !thread_is_running(mthread) ||
-                    thread_is_stopped(athread),
-                    &lwi);
+       wait_event_idle(mthread->t_ctl_waitq,
+                       list_empty(&lad->lad_req_list) ||
+                       !thread_is_running(mthread) ||
+                       thread_is_stopped(athread));
 
        if (!thread_is_running(mthread) || thread_is_stopped(athread))
                return LFSCK_CHECKPOINT_SKIP;
@@ -2573,21 +2586,19 @@ void lfsck_post_generic(const struct lu_env *env,
        struct lfsck_assistant_data     *lad     = com->lc_data;
        struct ptlrpc_thread            *athread = &lad->lad_thread;
        struct ptlrpc_thread            *mthread = &com->lc_lfsck->li_thread;
-       struct l_wait_info               lwi     = { 0 };
 
        lad->lad_post_result = *result;
        if (*result <= 0)
-               lad->lad_exit = 1;
-       lad->lad_to_post = 1;
+               set_bit(LAD_EXIT, &lad->lad_flags);
+       set_bit(LAD_TO_POST, &lad->lad_flags);
 
        CDEBUG(D_LFSCK, "%s: waiting for assistant to do %s post, rc = %d\n",
               lfsck_lfsck2name(com->lc_lfsck), lad->lad_name, *result);
 
        wake_up_all(&athread->t_ctl_waitq);
-       l_wait_event(mthread->t_ctl_waitq,
-                    (*result > 0 && list_empty(&lad->lad_req_list)) ||
-                    thread_is_stopped(athread),
-                    &lwi);
+       wait_event_idle(mthread->t_ctl_waitq,
+                       (*result > 0 && list_empty(&lad->lad_req_list)) ||
+                       thread_is_stopped(athread));
 
        if (lad->lad_assistant_status < 0)
                *result = lad->lad_assistant_status;
@@ -2602,22 +2613,20 @@ int lfsck_double_scan_generic(const struct lu_env *env,
        struct lfsck_assistant_data     *lad     = com->lc_data;
        struct ptlrpc_thread            *mthread = &com->lc_lfsck->li_thread;
        struct ptlrpc_thread            *athread = &lad->lad_thread;
-       struct l_wait_info               lwi     = { 0 };
 
        if (status != LS_SCANNING_PHASE2)
-               lad->lad_exit = 1;
+               set_bit(LAD_EXIT, &lad->lad_flags);
        else
-               lad->lad_to_double_scan = 1;
+               set_bit(LAD_TO_DOUBLE_SCAN, &lad->lad_flags);
 
        CDEBUG(D_LFSCK, "%s: waiting for assistant to do %s double_scan, "
               "status %d\n",
               lfsck_lfsck2name(com->lc_lfsck), lad->lad_name, status);
 
        wake_up_all(&athread->t_ctl_waitq);
-       l_wait_event(mthread->t_ctl_waitq,
-                    lad->lad_in_double_scan ||
-                    thread_is_stopped(athread),
-                    &lwi);
+       wait_event_idle(mthread->t_ctl_waitq,
+                       test_bit(LAD_IN_DOUBLE_SCAN, &lad->lad_flags) ||
+                       thread_is_stopped(athread));
 
        CDEBUG(D_LFSCK, "%s: the assistant has done %s double_scan, "
               "status %d\n", lfsck_lfsck2name(com->lc_lfsck), lad->lad_name,
@@ -2635,14 +2644,12 @@ void lfsck_quit_generic(const struct lu_env *env,
        struct lfsck_assistant_data     *lad     = com->lc_data;
        struct ptlrpc_thread            *mthread = &com->lc_lfsck->li_thread;
        struct ptlrpc_thread            *athread = &lad->lad_thread;
-       struct l_wait_info               lwi     = { 0 };
 
-       lad->lad_exit = 1;
+       set_bit(LAD_EXIT, &lad->lad_flags);
        wake_up_all(&athread->t_ctl_waitq);
-       l_wait_event(mthread->t_ctl_waitq,
-                    thread_is_init(athread) ||
-                    thread_is_stopped(athread),
-                    &lwi);
+       wait_event_idle(mthread->t_ctl_waitq,
+                       thread_is_init(athread) ||
+                       thread_is_stopped(athread));
 }
 
 int lfsck_load_one_trace_file(const struct lu_env *env,
@@ -3047,8 +3054,7 @@ again:
 
        if (unlikely(rc == -EINPROGRESS)) {
                retry = true;
-               set_current_state(TASK_INTERRUPTIBLE);
-               schedule_timeout(msecs_to_jiffies(MSEC_PER_SEC));
+               schedule_timeout_interruptible(cfs_time_seconds(1));
                set_current_state(TASK_RUNNING);
                if (!signal_pending(current) &&
                    thread_is_running(&lfsck->li_thread))
@@ -3081,7 +3087,6 @@ int lfsck_start(const struct lu_env *env, struct dt_device *key,
        struct lfsck_bookmark           *bk;
        struct ptlrpc_thread            *thread;
        struct lfsck_component          *com;
-       struct l_wait_info               lwi    = { 0 };
        struct lfsck_thread_args        *lta;
        struct task_struct              *task;
        struct lfsck_tgt_descs          *ltds;
@@ -3316,10 +3321,9 @@ trigger:
                GOTO(out, rc);
        }
 
-       l_wait_event(thread->t_ctl_waitq,
-                    thread_is_running(thread) ||
-                    thread_is_stopped(thread),
-                    &lwi);
+       wait_event_idle(thread->t_ctl_waitq,
+                       thread_is_running(thread) ||
+                       thread_is_stopped(thread));
        if (start == NULL || !(start->ls_flags & LPF_BROADCAST)) {
                lfsck->li_start_unplug = 1;
                wake_up_all(&thread->t_ctl_waitq);
@@ -3342,9 +3346,8 @@ trigger:
 
                        lfsck->li_start_unplug = 1;
                        wake_up_all(&thread->t_ctl_waitq);
-                       l_wait_event(thread->t_ctl_waitq,
-                                    thread_is_stopped(thread),
-                                    &lwi);
+                       wait_event_idle(thread->t_ctl_waitq,
+                                       thread_is_stopped(thread));
                }
        } else {
                lfsck->li_start_unplug = 1;
@@ -3368,7 +3371,6 @@ int lfsck_stop(const struct lu_env *env, struct dt_device *key,
 {
        struct lfsck_instance   *lfsck;
        struct ptlrpc_thread    *thread;
-       struct l_wait_info       lwi    = { 0 };
        int                      rc     = 0;
        int                      rc1    = 0;
        ENTRY;
@@ -3408,7 +3410,7 @@ int lfsck_stop(const struct lu_env *env, struct dt_device *key,
        thread_set_flags(thread, SVC_STOPPING);
 
        LASSERT(lfsck->li_task != NULL);
-       force_sig(SIGINT, lfsck->li_task);
+       cfs_force_sig(SIGINT, lfsck->li_task);
 
        if (lfsck->li_master) {
                struct lfsck_component *com;
@@ -3418,7 +3420,7 @@ int lfsck_stop(const struct lu_env *env, struct dt_device *key,
                        lad = com->lc_data;
                        spin_lock(&lad->lad_lock);
                        if (lad->lad_task != NULL)
-                               force_sig(SIGINT, lad->lad_task);
+                               cfs_force_sig(SIGINT, lad->lad_task);
                        spin_unlock(&lad->lad_lock);
                }
 
@@ -3426,7 +3428,7 @@ int lfsck_stop(const struct lu_env *env, struct dt_device *key,
                        lad = com->lc_data;
                        spin_lock(&lad->lad_lock);
                        if (lad->lad_task != NULL)
-                               force_sig(SIGINT, lad->lad_task);
+                               cfs_force_sig(SIGINT, lad->lad_task);
                        spin_unlock(&lad->lad_lock);
                }
        }
@@ -3438,9 +3440,8 @@ int lfsck_stop(const struct lu_env *env, struct dt_device *key,
 
        /* It was me set the status as 'stopping' just now, if it is not
         * 'stopping' now, then either stopped, or re-started by race. */
-       l_wait_event(thread->t_ctl_waitq,
-                    !thread_is_stopping(thread),
-                    &lwi);
+       wait_event_idle(thread->t_ctl_waitq,
+                       !thread_is_stopping(thread));
 
        GOTO(put, rc = 0);
 
@@ -3602,17 +3603,16 @@ again:
                            que->lu_mdts_count[i][LS_SCANNING_PHASE2] != 0 ||
                            que->lu_osts_count[i][LS_SCANNING_PHASE1] != 0 ||
                            que->lu_osts_count[i][LS_SCANNING_PHASE2] != 0) {
-                               struct l_wait_info lwi;
-
                                /* If it is required to wait, then sleep
-                                * 3 seconds and try to query again. */
-                               lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(3),
-                                                      NULL,
-                                                      LWI_ON_SIGNAL_NOOP,
-                                                      NULL);
-                               rc = l_wait_event(lfsck->li_thread.t_ctl_waitq,
-                                                 0, &lwi);
-                               if (rc == -ETIMEDOUT)
+                                * 3 seconds and try to query again.
+                                */
+                               unsigned long timeout =
+                                       msecs_to_jiffies(3000) + 1;
+                               while (timeout &&
+                                      !fatal_signal_pending(current))
+                                       timeout = schedule_timeout_killable(
+                                               timeout);
+                               if (timeout == 0)
                                        goto again;
                        }
                }
@@ -3972,9 +3972,6 @@ static int __init lfsck_init(void)
 {
        int rc;
 
-       INIT_LIST_HEAD(&lfsck_instance_list);
-       INIT_LIST_HEAD(&lfsck_ost_orphan_list);
-       INIT_LIST_HEAD(&lfsck_mdt_orphan_list);
        lfsck_key_init_generic(&lfsck_thread_key, NULL);
        rc = lu_context_key_register(&lfsck_thread_key);
        if (!rc) {