Blame SOURCES/fio-3.13-Kill-No-I-O-performed-by-.-message.patch

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From ff3aa922570c22b99b7ae8714e04a79d0d0eddb7 Mon Sep 17 00:00:00 2001
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From: Jens Axboe <axboe@kernel.dk>
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Date: Tue, 20 Nov 2018 11:59:36 -0700
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Subject: [PATCH] Kill "No I/O performed by ..." message
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We keep finding false triggers for this, and it's driving me
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nuts. Kill it with fire.
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Signed-off-by: Jens Axboe <axboe@kernel.dk>
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---
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 backend.c | 19 +------------------
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 1 file changed, 1 insertion(+), 18 deletions(-)
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Index: fio-3.7/backend.c
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===================================================================
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--- fio-3.7.orig/backend.c
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+++ fio-3.7/backend.c
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@@ -1519,7 +1519,7 @@ static void *thread_main(void *data)
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 	struct sk_out *sk_out = fd->sk_out;
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 	uint64_t bytes_done[DDIR_RWDIR_CNT];
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 	int deadlock_loop_cnt;
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-	bool clear_state, did_some_io;
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+	bool clear_state;
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 	int ret;
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 	sk_out_assign(sk_out);
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@@ -1738,7 +1738,6 @@ static void *thread_main(void *data)
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 	memset(bytes_done, 0, sizeof(bytes_done));
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 	clear_state = false;
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-	did_some_io = false;
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 	while (keep_running(td)) {
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 		uint64_t verify_bytes;
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@@ -1816,9 +1815,6 @@ static void *thread_main(void *data)
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 		    td_ioengine_flagged(td, FIO_UNIDIR))
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 			continue;
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-		if (ddir_rw_sum(bytes_done))
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-			did_some_io = true;
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-
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 		clear_io_state(td, 0);
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 		fio_gettime(&td->start, NULL);
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@@ -1839,19 +1835,6 @@ static void *thread_main(void *data)
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 			break;
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 	}
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-	/*
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-	 * If td ended up with no I/O when it should have had,
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-	 * then something went wrong unless FIO_NOIO or FIO_DISKLESSIO.
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-	 * (Are we not missing other flags that can be ignored ?)
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-	 */
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-	if ((td->o.size || td->o.io_size) && !ddir_rw_sum(bytes_done) &&
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-	    !did_some_io && !td->o.create_only &&
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-	    !(td_ioengine_flagged(td, FIO_NOIO) ||
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-	      td_ioengine_flagged(td, FIO_DISKLESSIO)))
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-		log_err("%s: No I/O performed by %s, "
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-			 "perhaps try --debug=io option for details?\n",
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-			 td->o.name, td->io_ops->name);
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-
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 	td_set_runstate(td, TD_FINISHING);
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 	update_rusage_stat(td);