linux-kernel - Re: [patch 2/8] fault-injection capabilities infrastructure

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Date:	Mon, 18 Sep 2006 22:50:54 -0700
From:	Don Mullis <dwm@...r.net>
To:	Akinobu Mita <mita@...aclelinux.com>
Cc:	linux-kernel@...r.kernel.org, ak@...e.de, akpm@...l.org,
	okuji@...ug.org
Subject: Re: [patch 2/8] fault-injection capabilities infrastructure

Replace individual structure element comments with reference
to Documentation/fault-injection/fault-injection.txt

Init "interval" to 1 (smallest useful value).
Init "times" to 1 rather than -1 (infinity), for fewer 
accidental system lockups.


Signed-off-by: Don Mullis <dwm@...r.net>

---
 include/linux/fault-inject.h |   20 +++++---------------
 1 file changed, 5 insertions(+), 15 deletions(-)

Index: linux-2.6.17/include/linux/fault-inject.h
===================================================================
--- linux-2.6.17.orig/include/linux/fault-inject.h
+++ linux-2.6.17/include/linux/fault-inject.h
@@ -6,31 +6,21 @@
 #include <linux/types.h>
 #include <asm/atomic.h>
 
+/*
+ * For explanation of the elements of this struct, see
+ * Documentation/fault-injection/fault-injection.txt
+ */
 struct fault_attr {
-
-	/* how often it should fail in percent. */
 	unsigned long probability;
-
-	/* the interval of failures. */
 	unsigned long interval;
-
-	/*
-	 * how many times failures may happen at most.
-	 * A value of '-1' means infinity.
-	 */
 	atomic_t times;
-
-	/*
-	 * the size of free space where memory can be allocated safely.
-	 * A value of '0' means infinity.
-	 */
 	atomic_t space;
 
 	unsigned long count;
 };
 
 #define DEFINE_FAULT_ATTR(name) \
-	struct fault_attr name = { .times = ATOMIC_INIT(-1), }
+	struct fault_attr name = { .interval=1, .times = ATOMIC_INIT(1), }
 
 int setup_fault_attr(struct fault_attr *attr, char *str);
 void should_fail_srandom(unsigned long entropy);


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