From bcfad4265cedf3adcac355e994ef9771b78407bd Mon Sep 17 00:00:00 2001 From: Alexander Aring Date: Mon, 4 Apr 2022 16:06:34 -0400 Subject: [PATCH] dlm: improve plock logging if interrupted This patch changes the log level if a plock is removed when interrupted from debug to info. Additional it signals now that the plock entity was removed to let the user know what's happening. If on a dev_write() a pending plock cannot be find it will signal that it might have been removed because wait interruption. Before this patch there might be a "dev_write no op ..." info message and the users can only guess that the plock was removed before because the wait interruption. To be sure that is the case we log both messages on the same log level. Let both message be logged on info layer because it should not happened a lot and if it happens it should be clear why the op was not found. Signed-off-by: Alexander Aring Signed-off-by: David Teigland --- fs/dlm/plock.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/fs/dlm/plock.c b/fs/dlm/plock.c index 757d9013788a..ce1af7986e16 100644 --- a/fs/dlm/plock.c +++ b/fs/dlm/plock.c @@ -161,11 +161,12 @@ int dlm_posix_lock(dlm_lockspace_t *lockspace, u64 number, struct file *file, rv = wait_event_interruptible(recv_wq, (op->done != 0)); if (rv == -ERESTARTSYS) { - log_debug(ls, "%s: wait killed %llx", __func__, - (unsigned long long)number); spin_lock(&ops_lock); list_del(&op->list); spin_unlock(&ops_lock); + log_print("%s: wait interrupted %x %llx, op removed", + __func__, ls->ls_global_id, + (unsigned long long)number); dlm_release_plock_op(op); do_unlock_close(ls, number, file, fl); goto out; @@ -443,8 +444,8 @@ static ssize_t dev_write(struct file *file, const char __user *u, size_t count, else wake_up(&recv_wq); } else - log_print("dev_write no op %x %llx", info.fsid, - (unsigned long long)info.number); + log_print("%s: no op %x %llx - may got interrupted?", __func__, + info.fsid, (unsigned long long)info.number); return count; }