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fs: dlm: ast do WARN_ON_ONCE() on hotpath

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This patch changes the ast hotpath functionality in very unlikely cases
that we do WARN_ON_ONCE() instead of WARN_ON() to not spamming the
console output if we run into states that it would occur over and over
again.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
This commit is contained in:
Alexander Aring 2022-11-17 17:11:42 -05:00 committed by David Teigland
parent 9267c85769
commit 740bb8fc10
2 changed files with 7 additions and 7 deletions
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6
fs/dlm/ast.c
View File

@ -161,12 +161,12 @@ void dlm_add_cb(struct dlm_lkb *lkb, uint32_t flags, int mode, int status,
spin_unlock(&ls->ls_cb_lock);
break;
case DLM_ENQUEUE_CALLBACK_FAILURE:
WARN_ON(1);
WARN_ON_ONCE(1);
break;
case DLM_ENQUEUE_CALLBACK_SUCCESS:
break;
default:
WARN_ON(1);
WARN_ON_ONCE(1);
break;
}
spin_unlock(&lkb->lkb_cb_lock);
@ -185,7 +185,7 @@ void dlm_callback_work(struct work_struct *work)
rv = dlm_dequeue_lkb_callback(lkb, &cb);
spin_unlock(&lkb->lkb_cb_lock);
if (WARN_ON(rv == DLM_DEQUEUE_CALLBACK_EMPTY))
if (WARN_ON_ONCE(rv == DLM_DEQUEUE_CALLBACK_EMPTY))
goto out;
for (;;) {

8
fs/dlm/user.c
View File

@ -214,7 +214,7 @@ void dlm_user_add_ast(struct dlm_lkb *lkb, uint32_t flags, int mode,
switch (rv) {
case DLM_ENQUEUE_CALLBACK_FAILURE:
spin_unlock(&proc->asts_spin);
WARN_ON(1);
WARN_ON_ONCE(1);
goto out;
case DLM_ENQUEUE_CALLBACK_NEED_SCHED:
kref_get(&lkb->lkb_ref);
@ -224,7 +224,7 @@ void dlm_user_add_ast(struct dlm_lkb *lkb, uint32_t flags, int mode,
case DLM_ENQUEUE_CALLBACK_SUCCESS:
break;
default:
WARN_ON(1);
WARN_ON_ONCE(1);
break;
}
spin_unlock(&proc->asts_spin);
@ -880,7 +880,7 @@ static ssize_t device_read(struct file *file, char __user *buf, size_t count,
spin_unlock(&proc->asts_spin);
/* removes ref for proc->asts, may cause lkb to be freed */
dlm_put_lkb(lkb);
WARN_ON(1);
WARN_ON_ONCE(1);
goto try_another;
case DLM_DEQUEUE_CALLBACK_LAST:
list_del_init(&lkb->lkb_cb_list);
@ -890,7 +890,7 @@ static ssize_t device_read(struct file *file, char __user *buf, size_t count,
case DLM_DEQUEUE_CALLBACK_SUCCESS:
break;
default:
WARN_ON(1);
WARN_ON_ONCE(1);
break;
}
spin_unlock(&proc->asts_spin);