From: Jens Axboe <jens.axboe@oracle.com>
Date: Tue, 13 Mar 2007 07:15:18 +0000 (+0100)
Subject: [PATCH] disk_util: Allow an engine to turn off disk_util specifically
X-Git-Tag: fio-1.14~29
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=62d984e2c12579361ee620b0a309c540cff9b09d

[PATCH] disk_util: Allow an engine to turn off disk_util specifically

Originally from Joel Becker <Joel.Becker@oracle.com>

An engine may support disks, but be unable to work with disk_util (as
there is no fd).  Add a flag to turn off disk_util from the engine.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---

diff --git a/fio.h b/fio.h
index e9f34e8a..0ca23cc0 100644
--- a/fio.h
+++ b/fio.h
@@ -215,6 +215,7 @@ enum fio_ioengine_flags {
 	FIO_RAWIO	= 1 << 1,	/* some sort of direct/raw io */
 	FIO_DISKLESSIO	= 1 << 2,	/* no disk involved */
 	FIO_NOEXTEND	= 1 << 3,	/* engine can't extend file */
+	FIO_NODISKUTIL  = 1 << 4,       /* diskutil can't handle filename */
 };
 
 /*
diff --git a/stat.c b/stat.c
index 1eb55be4..85d55b4c 100644
--- a/stat.c
+++ b/stat.c
@@ -249,7 +249,8 @@ void init_disk_util(struct thread_data *td)
 	dev_t dev;
 	char *p;
 
-	if (!td->do_disk_util || (td->io_ops->flags & FIO_DISKLESSIO))
+	if (!td->do_disk_util ||
+	    (td->io_ops->flags & (FIO_DISKLESSIO | FIO_NODISKUTIL)))
 		return;
 
 	/*