Re: [PATCH 03/19] staging: lustre: replace simple cases of l_wait_event() with wait_event().

James Simmons
2018-01-17T15:29:18Z

> When the lwi arg is full of zeros, l_wait_event() behaves almost
> identically to the standard wait_event_idle() interface, so use that
> instead.
>
> l_wait_event() uses TASK_INTERRUPTIBLE, but blocks all signals.
> wait_event_idle() uses the new TASK_IDLE and so avoids adding
> to the load average without needing to block signals.
>
> In one case, wait_event_idle_exclusive() is needed.
>
> Also remove all l_wait_condition*() macros which were short-cuts
> for setting lwi to {0}.

Reviewed-by: James Simmons <jsimmons@infradead.org>

> Signed-off-by: NeilBrown <neilb@suse.com>
> ---
> drivers/staging/lustre/lustre/include/lustre_lib.h | 19 --------
> drivers/staging/lustre/lustre/ldlm/ldlm_lock.c | 4 --
> drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c | 8 +--
> drivers/staging/lustre/lustre/ldlm/ldlm_pool.c | 5 +-
> drivers/staging/lustre/lustre/llite/statahead.c | 50 ++++++++------------
> drivers/staging/lustre/lustre/lov/lov_object.c | 6 +-
> drivers/staging/lustre/lustre/mgc/mgc_request.c | 4 --
> drivers/staging/lustre/lustre/obdclass/cl_io.c | 6 +-
> drivers/staging/lustre/lustre/obdclass/genops.c | 15 ++----
> drivers/staging/lustre/lustre/osc/osc_cache.c | 5 +-
> drivers/staging/lustre/lustre/osc/osc_object.c | 4 --
> drivers/staging/lustre/lustre/ptlrpc/pinger.c | 10 ++--
> drivers/staging/lustre/lustre/ptlrpc/sec_gc.c | 11 ++--
> drivers/staging/lustre/lustre/ptlrpc/service.c | 13 ++---
> 14 files changed, 53 insertions(+), 107 deletions(-)
>
> diff --git a/drivers/staging/lustre/lustre/include/lustre_lib.h b/drivers/staging/lustre/lustre/include/lustre_lib.h
> index ca1dce15337e..7d950c53e962 100644
> --- a/drivers/staging/lustre/lustre/include/lustre_lib.h
> +++ b/drivers/staging/lustre/lustre/include/lustre_lib.h
> @@ -333,24 +333,7 @@ do { \
> __ret; \
> })
>
> -#define l_wait_condition(wq, condition) \
> -({ \
> - struct l_wait_info lwi = { 0 }; \
> - l_wait_event(wq, condition, &lwi); \
> -})
> -
> -#define l_wait_condition_exclusive(wq, condition) \
> -({ \
> - struct l_wait_info lwi = { 0 }; \
> - l_wait_event_exclusive(wq, condition, &lwi); \
> -})
> -
> -#define l_wait_condition_exclusive_head(wq, condition) \
> -({ \
> - struct l_wait_info lwi = { 0 }; \
> - l_wait_event_exclusive_head(wq, condition, &lwi); \
> -})
> -
> /** @} lib */
>
> +
> #endif /* _LUSTRE_LIB_H */
> diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c b/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
> index 7cbc6a06afec..4f700ddb47c6 100644
> --- a/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
> +++ b/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
> @@ -1913,14 +1913,12 @@ void ldlm_cancel_callback(struct ldlm_lock *lock)
> ldlm_set_bl_done(lock);
> wake_up_all(&lock->l_waitq);
> } else if (!ldlm_is_bl_done(lock)) {
> - struct l_wait_info lwi = { 0 };
> -
> /*
> * The lock is guaranteed to have been canceled once
> * returning from this function.
> */
> unlock_res_and_lock(lock);
> - l_wait_event(lock->l_waitq, is_bl_done(lock), &lwi);
> + wait_event_idle(lock->l_waitq, is_bl_done(lock));
> lock_res_and_lock(lock);
> }
> }
> diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c b/drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c
> index 5f6e7c933b81..6c7c4b19a0a0 100644
> --- a/drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c
> +++ b/drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c
> @@ -833,17 +833,15 @@ static int ldlm_bl_thread_main(void *arg)
> /* cannot use bltd after this, it is only on caller's stack */
>
> while (1) {
> - struct l_wait_info lwi = { 0 };
> struct ldlm_bl_work_item *blwi = NULL;
> struct obd_export *exp = NULL;
> int rc;
>
> rc = ldlm_bl_get_work(blp, &blwi, &exp);
> if (!rc)
> - l_wait_event_exclusive(blp->blp_waitq,
> - ldlm_bl_get_work(blp, &blwi,
> - &exp),
> - &lwi);
> + wait_event_idle_exclusive(blp->blp_waitq,
> + ldlm_bl_get_work(blp, &blwi,
> + &exp));
> atomic_inc(&blp->blp_busy_threads);
>
> if (ldlm_bl_thread_need_create(blp, blwi))
> diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_pool.c b/drivers/staging/lustre/lustre/ldlm/ldlm_pool.c
> index 8563bd32befa..f27c2694793a 100644
> --- a/drivers/staging/lustre/lustre/ldlm/ldlm_pool.c
> +++ b/drivers/staging/lustre/lustre/ldlm/ldlm_pool.c
> @@ -1031,7 +1031,6 @@ static int ldlm_pools_thread_main(void *arg)
>
> static int ldlm_pools_thread_start(void)
> {
> - struct l_wait_info lwi = { 0 };
> struct task_struct *task;
>
> if (ldlm_pools_thread)
> @@ -1052,8 +1051,8 @@ static int ldlm_pools_thread_start(void)
> ldlm_pools_thread = NULL;
> return PTR_ERR(task);
> }
> - l_wait_event(ldlm_pools_thread->t_ctl_waitq,
> - thread_is_running(ldlm_pools_thread), &lwi);
> + wait_event_idle(ldlm_pools_thread->t_ctl_waitq,
> + thread_is_running(ldlm_pools_thread));
> return 0;
> }
>
> diff --git a/drivers/staging/lustre/lustre/llite/statahead.c b/drivers/staging/lustre/lustre/llite/statahead.c
> index 90c7324575e4..78005cc6e831 100644
> --- a/drivers/staging/lustre/lustre/llite/statahead.c
> +++ b/drivers/staging/lustre/lustre/llite/statahead.c
> @@ -864,7 +864,6 @@ static int ll_agl_thread(void *arg)
> struct ll_sb_info *sbi = ll_i2sbi(dir);
> struct ll_statahead_info *sai;
> struct ptlrpc_thread *thread;
> - struct l_wait_info lwi = { 0 };
>
> sai = ll_sai_get(dir);
> thread = &sai->sai_agl_thread;
> @@ -885,10 +884,9 @@ static int ll_agl_thread(void *arg)
> wake_up(&thread->t_ctl_waitq);
>
> while (1) {
> - l_wait_event(thread->t_ctl_waitq,
> - !list_empty(&sai->sai_agls) ||
> - !thread_is_running(thread),
> - &lwi);
> + wait_event_idle(thread->t_ctl_waitq,
> + !list_empty(&sai->sai_agls) ||
> + !thread_is_running(thread));
>
> if (!thread_is_running(thread))
> break;
> @@ -932,7 +930,6 @@ static int ll_agl_thread(void *arg)
> static void ll_start_agl(struct dentry *parent, struct ll_statahead_info *sai)
> {
> struct ptlrpc_thread *thread = &sai->sai_agl_thread;
> - struct l_wait_info lwi = { 0 };
> struct ll_inode_info *plli;
> struct task_struct *task;
>
> @@ -948,9 +945,8 @@ static void ll_start_agl(struct dentry *parent, struct ll_statahead_info *sai)
> return;
> }
>
> - 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));
> }
>
> /* statahead thread main function */
> @@ -968,7 +964,6 @@ static int ll_statahead_thread(void *arg)
> int first = 0;
> int rc = 0;
> struct md_op_data *op_data;
> - struct l_wait_info lwi = { 0 };
>
> sai = ll_sai_get(dir);
> sa_thread = &sai->sai_thread;
> @@ -1069,12 +1064,11 @@ static int ll_statahead_thread(void *arg)
>
> /* wait for spare statahead window */
> do {
> - l_wait_event(sa_thread->t_ctl_waitq,
> - !sa_sent_full(sai) ||
> - sa_has_callback(sai) ||
> - !list_empty(&sai->sai_agls) ||
> - !thread_is_running(sa_thread),
> - &lwi);
> + wait_event_idle(sa_thread->t_ctl_waitq,
> + !sa_sent_full(sai) ||
> + sa_has_callback(sai) ||
> + !list_empty(&sai->sai_agls) ||
> + !thread_is_running(sa_thread));
> sa_handle_callback(sai);
>
> spin_lock(&lli->lli_agl_lock);
> @@ -1128,11 +1122,10 @@ static int ll_statahead_thread(void *arg)
> * for file release to stop me.
> */
> while (thread_is_running(sa_thread)) {
> - l_wait_event(sa_thread->t_ctl_waitq,
> - sa_has_callback(sai) ||
> - !agl_list_empty(sai) ||
> - !thread_is_running(sa_thread),
> - &lwi);
> + wait_event_idle(sa_thread->t_ctl_waitq,
> + sa_has_callback(sai) ||
> + !agl_list_empty(sai) ||
> + !thread_is_running(sa_thread));
>
> sa_handle_callback(sai);
> }
> @@ -1145,9 +1138,8 @@ static int ll_statahead_thread(void *arg)
>
> CDEBUG(D_READA, "stop agl thread: sai %p pid %u\n",
> sai, (unsigned int)agl_thread->t_pid);
> - l_wait_event(agl_thread->t_ctl_waitq,
> - thread_is_stopped(agl_thread),
> - &lwi);
> + wait_event_idle(agl_thread->t_ctl_waitq,
> + thread_is_stopped(agl_thread));
> } else {
> /* Set agl_thread flags anyway. */
> thread_set_flags(agl_thread, SVC_STOPPED);
> @@ -1159,8 +1151,8 @@ static int ll_statahead_thread(void *arg)
> */
> while (sai->sai_sent != sai->sai_replied) {
> /* in case we're not woken up, timeout wait */
> - lwi = LWI_TIMEOUT(msecs_to_jiffies(MSEC_PER_SEC >> 3),
> - NULL, NULL);
> + struct l_wait_info lwi = LWI_TIMEOUT(msecs_to_jiffies(MSEC_PER_SEC >> 3),
> + NULL, NULL);
> l_wait_event(sa_thread->t_ctl_waitq,
> sai->sai_sent == sai->sai_replied, &lwi);
> }
> @@ -1520,7 +1512,6 @@ static int start_statahead_thread(struct inode *dir, struct dentry *dentry)
> {
> struct ll_inode_info *lli = ll_i2info(dir);
> struct ll_statahead_info *sai = NULL;
> - struct l_wait_info lwi = { 0 };
> struct ptlrpc_thread *thread;
> struct task_struct *task;
> struct dentry *parent = dentry->d_parent;
> @@ -1570,9 +1561,8 @@ static int start_statahead_thread(struct inode *dir, struct dentry *dentry)
> goto out;
> }
>
> - 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));
> ll_sai_put(sai);
>
> /*
> diff --git a/drivers/staging/lustre/lustre/lov/lov_object.c b/drivers/staging/lustre/lustre/lov/lov_object.c
> index 897cf2cd4a24..86cd4f9fbd0c 100644
> --- a/drivers/staging/lustre/lustre/lov/lov_object.c
> +++ b/drivers/staging/lustre/lustre/lov/lov_object.c
> @@ -723,15 +723,13 @@ static void lov_conf_unlock(struct lov_object *lov)
>
> static int lov_layout_wait(const struct lu_env *env, struct lov_object *lov)
> {
> - struct l_wait_info lwi = { 0 };
> -
> while (atomic_read(&lov->lo_active_ios) > 0) {
> CDEBUG(D_INODE, "file:" DFID " wait for active IO, now: %d.\n",
> PFID(lu_object_fid(lov2lu(lov))),
> atomic_read(&lov->lo_active_ios));
>
> - l_wait_event(lov->lo_waitq,
> - atomic_read(&lov->lo_active_ios) == 0, &lwi);
> + wait_event_idle(lov->lo_waitq,
> + atomic_read(&lov->lo_active_ios) == 0);
> }
> return 0;
> }
> diff --git a/drivers/staging/lustre/lustre/mgc/mgc_request.c b/drivers/staging/lustre/lustre/mgc/mgc_request.c
> index 79ff85feab64..b743aee62349 100644
> --- a/drivers/staging/lustre/lustre/mgc/mgc_request.c
> +++ b/drivers/staging/lustre/lustre/mgc/mgc_request.c
> @@ -601,9 +601,7 @@ static int mgc_requeue_thread(void *data)
> config_log_put(cld_prev);
>
> /* Wait a bit to see if anyone else needs a requeue */
> - lwi = (struct l_wait_info) { 0 };
> - l_wait_event(rq_waitq, rq_state & (RQ_NOW | RQ_STOP),
> - &lwi);
> + wait_event_idle(rq_waitq, rq_state & (RQ_NOW | RQ_STOP));
> spin_lock(&config_list_lock);
> }
>
> diff --git a/drivers/staging/lustre/lustre/obdclass/cl_io.c b/drivers/staging/lustre/lustre/obdclass/cl_io.c
> index 6ec5218a18c1..902bad22013b 100644
> --- a/drivers/staging/lustre/lustre/obdclass/cl_io.c
> +++ b/drivers/staging/lustre/lustre/obdclass/cl_io.c
> @@ -1110,10 +1110,8 @@ int cl_sync_io_wait(const struct lu_env *env, struct cl_sync_io *anchor,
> CERROR("IO failed: %d, still wait for %d remaining entries\n",
> rc, atomic_read(&anchor->csi_sync_nr));
>
> - lwi = (struct l_wait_info) { 0 };
> - (void)l_wait_event(anchor->csi_waitq,
> - atomic_read(&anchor->csi_sync_nr) == 0,
> - &lwi);
> + wait_event_idle(anchor->csi_waitq,
> + atomic_read(&anchor->csi_sync_nr) == 0);
> } else {
> rc = anchor->csi_sync_rc;
> }
> diff --git a/drivers/staging/lustre/lustre/obdclass/genops.c b/drivers/staging/lustre/lustre/obdclass/genops.c
> index b1d6ba4a3190..3ff25b8d3b48 100644
> --- a/drivers/staging/lustre/lustre/obdclass/genops.c
> +++ b/drivers/staging/lustre/lustre/obdclass/genops.c
> @@ -1237,12 +1237,10 @@ static int obd_zombie_is_idle(void)
> */
> void obd_zombie_barrier(void)
> {
> - struct l_wait_info lwi = { 0 };
> -
> if (obd_zombie_pid == current_pid())
> /* don't wait for myself */
> return;
> - l_wait_event(obd_zombie_waitq, obd_zombie_is_idle(), &lwi);
> + wait_event_idle(obd_zombie_waitq, obd_zombie_is_idle());
> }
> EXPORT_SYMBOL(obd_zombie_barrier);
>
> @@ -1257,10 +1255,8 @@ static int obd_zombie_impexp_thread(void *unused)
> obd_zombie_pid = current_pid();
>
> while (!test_bit(OBD_ZOMBIE_STOP, &obd_zombie_flags)) {
> - struct l_wait_info lwi = { 0 };
> -
> - l_wait_event(obd_zombie_waitq,
> - !obd_zombie_impexp_check(NULL), &lwi);
> + wait_event_idle(obd_zombie_waitq,
> + !obd_zombie_impexp_check(NULL));
> obd_zombie_impexp_cull();
>
> /*
> @@ -1593,7 +1589,6 @@ static inline bool obd_mod_rpc_slot_avail(struct client_obd *cli,
> u16 obd_get_mod_rpc_slot(struct client_obd *cli, __u32 opc,
> struct lookup_intent *it)
> {
> - struct l_wait_info lwi = LWI_INTR(NULL, NULL);
> bool close_req = false;
> u16 i, max;
>
> @@ -1631,8 +1626,8 @@ u16 obd_get_mod_rpc_slot(struct client_obd *cli, __u32 opc,
> CDEBUG(D_RPCTRACE, "%s: sleeping for a modify RPC slot opc %u, max %hu\n",
> cli->cl_import->imp_obd->obd_name, opc, max);
>
> - l_wait_event(cli->cl_mod_rpcs_waitq,
> - obd_mod_rpc_slot_avail(cli, close_req), &lwi);
> + wait_event_idle(cli->cl_mod_rpcs_waitq,
> + obd_mod_rpc_slot_avail(cli, close_req));
> } while (true);
> }
> EXPORT_SYMBOL(obd_get_mod_rpc_slot);
> diff --git a/drivers/staging/lustre/lustre/osc/osc_cache.c b/drivers/staging/lustre/lustre/osc/osc_cache.c
> index 5767ac2a7d16..b8d5adca94e1 100644
> --- a/drivers/staging/lustre/lustre/osc/osc_cache.c
> +++ b/drivers/staging/lustre/lustre/osc/osc_cache.c
> @@ -964,9 +964,8 @@ static int osc_extent_wait(const struct lu_env *env, struct osc_extent *ext,
> "%s: wait ext to %u timedout, recovery in progress?\n",
> cli_name(osc_cli(obj)), state);
>
> - lwi = LWI_INTR(NULL, NULL);
> - rc = l_wait_event(ext->oe_waitq, extent_wait_cb(ext, state),
> - &lwi);
> + wait_event_idle(ext->oe_waitq, extent_wait_cb(ext, state));
> + rc = 0;
> }
> if (rc == 0 && ext->oe_rc < 0)
> rc = ext->oe_rc;
> diff --git a/drivers/staging/lustre/lustre/osc/osc_object.c b/drivers/staging/lustre/lustre/osc/osc_object.c
> index f82c87a77550..6c424f0290bb 100644
> --- a/drivers/staging/lustre/lustre/osc/osc_object.c
> +++ b/drivers/staging/lustre/lustre/osc/osc_object.c
> @@ -454,12 +454,10 @@ struct lu_object *osc_object_alloc(const struct lu_env *env,
>
> int osc_object_invalidate(const struct lu_env *env, struct osc_object *osc)
> {
> - struct l_wait_info lwi = { 0 };
> -
> CDEBUG(D_INODE, "Invalidate osc object: %p, # of active IOs: %d\n",
> osc, atomic_read(&osc->oo_nr_ios));
>
> - l_wait_event(osc->oo_io_waitq, !atomic_read(&osc->oo_nr_ios), &lwi);
> + wait_event_idle(osc->oo_io_waitq, !atomic_read(&osc->oo_nr_ios));
>
> /* Discard all dirty pages of this object. */
> osc_cache_truncate_start(env, osc, 0, NULL);
> diff --git a/drivers/staging/lustre/lustre/ptlrpc/pinger.c b/drivers/staging/lustre/lustre/ptlrpc/pinger.c
> index fe6b47bfe8be..af707cb2b62b 100644
> --- a/drivers/staging/lustre/lustre/ptlrpc/pinger.c
> +++ b/drivers/staging/lustre/lustre/ptlrpc/pinger.c
> @@ -291,7 +291,6 @@ static struct ptlrpc_thread pinger_thread;
>
> int ptlrpc_start_pinger(void)
> {
> - struct l_wait_info lwi = { 0 };
> struct task_struct *task;
> int rc;
>
> @@ -310,8 +309,8 @@ int ptlrpc_start_pinger(void)
> CERROR("cannot start pinger thread: rc = %d\n", rc);
> return rc;
> }
> - l_wait_event(pinger_thread.t_ctl_waitq,
> - thread_is_running(&pinger_thread), &lwi);
> + wait_event_idle(pinger_thread.t_ctl_waitq,
> + thread_is_running(&pinger_thread));
>
> return 0;
> }
> @@ -320,7 +319,6 @@ static int ptlrpc_pinger_remove_timeouts(void);
>
> int ptlrpc_stop_pinger(void)
> {
> - struct l_wait_info lwi = { 0 };
> int rc = 0;
>
> if (thread_is_init(&pinger_thread) ||
> @@ -331,8 +329,8 @@ int ptlrpc_stop_pinger(void)
> thread_set_flags(&pinger_thread, SVC_STOPPING);
> wake_up(&pinger_thread.t_ctl_waitq);
>
> - l_wait_event(pinger_thread.t_ctl_waitq,
> - thread_is_stopped(&pinger_thread), &lwi);
> + wait_event_idle(pinger_thread.t_ctl_waitq,
> + thread_is_stopped(&pinger_thread));
>
> return rc;
> }
> diff --git a/drivers/staging/lustre/lustre/ptlrpc/sec_gc.c b/drivers/staging/lustre/lustre/ptlrpc/sec_gc.c
> index d85c8638c009..b61e1aa25e8c 100644
> --- a/drivers/staging/lustre/lustre/ptlrpc/sec_gc.c
> +++ b/drivers/staging/lustre/lustre/ptlrpc/sec_gc.c
> @@ -197,7 +197,6 @@ static int sec_gc_main(void *arg)
>
> int sptlrpc_gc_init(void)
> {
> - struct l_wait_info lwi = { 0 };
> struct task_struct *task;
>
> mutex_init(&sec_gc_mutex);
> @@ -214,18 +213,16 @@ int sptlrpc_gc_init(void)
> return PTR_ERR(task);
> }
>
> - l_wait_event(sec_gc_thread.t_ctl_waitq,
> - thread_is_running(&sec_gc_thread), &lwi);
> + wait_event_idle(sec_gc_thread.t_ctl_waitq,
> + thread_is_running(&sec_gc_thread));
> return 0;
> }
>
> void sptlrpc_gc_fini(void)
> {
> - struct l_wait_info lwi = { 0 };
> -
> thread_set_flags(&sec_gc_thread, SVC_STOPPING);
> wake_up(&sec_gc_thread.t_ctl_waitq);
>
> - l_wait_event(sec_gc_thread.t_ctl_waitq,
> - thread_is_stopped(&sec_gc_thread), &lwi);
> + wait_event_idle(sec_gc_thread.t_ctl_waitq,
> + thread_is_stopped(&sec_gc_thread));
> }
> diff --git a/drivers/staging/lustre/lustre/ptlrpc/service.c b/drivers/staging/lustre/lustre/ptlrpc/service.c
> index 63be6e7273f3..1f22926c1355 100644
> --- a/drivers/staging/lustre/lustre/ptlrpc/service.c
> +++ b/drivers/staging/lustre/lustre/ptlrpc/service.c
> @@ -2233,7 +2233,7 @@ static int ptlrpc_hr_main(void *arg)
> wake_up(&ptlrpc_hr.hr_waitq);
>
> while (!ptlrpc_hr.hr_stopping) {
> - l_wait_condition(hrt->hrt_waitq, hrt_dont_sleep(hrt, &replies));
> + wait_event_idle(hrt->hrt_waitq, hrt_dont_sleep(hrt, &replies));
>
> while (!list_empty(&replies)) {
> struct ptlrpc_reply_state *rs;
> @@ -2312,7 +2312,6 @@ static int ptlrpc_start_hr_threads(void)
>
> static void ptlrpc_svcpt_stop_threads(struct ptlrpc_service_part *svcpt)
> {
> - struct l_wait_info lwi = { 0 };
> struct ptlrpc_thread *thread;
> LIST_HEAD(zombie);
>
> @@ -2341,8 +2340,8 @@ static void ptlrpc_svcpt_stop_threads(struct ptlrpc_service_part *svcpt)
>
> CDEBUG(D_INFO, "waiting for stopping-thread %s #%u\n",
> svcpt->scp_service->srv_thread_name, thread->t_id);
> - l_wait_event(thread->t_ctl_waitq,
> - thread_is_stopped(thread), &lwi);
> + wait_event_idle(thread->t_ctl_waitq,
> + thread_is_stopped(thread));
>
> spin_lock(&svcpt->scp_lock);
> }
> @@ -2403,7 +2402,6 @@ int ptlrpc_start_threads(struct ptlrpc_service *svc)
>
> int ptlrpc_start_thread(struct ptlrpc_service_part *svcpt, int wait)
> {
> - struct l_wait_info lwi = { 0 };
> struct ptlrpc_thread *thread;
> struct ptlrpc_service *svc;
> struct task_struct *task;
> @@ -2499,9 +2497,8 @@ int ptlrpc_start_thread(struct ptlrpc_service_part *svcpt, int wait)
> if (!wait)
> return 0;
>
> - 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));
>
> rc = thread_is_stopped(thread) ? thread->t_id : 0;
> return rc;
>
>
>