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-rw-r--r--Documentation/fault-injection/fault-injection.txt7
1 files changed, 3 insertions, 4 deletions
diff --git a/Documentation/fault-injection/fault-injection.txt b/Documentation/fault-injection/fault-injection.txt
index 192d8cbcc5f9..a32190508751 100644
--- a/Documentation/fault-injection/fault-injection.txt
+++ b/Documentation/fault-injection/fault-injection.txt
@@ -138,8 +138,8 @@ o proc entries
- /proc/self/task/<current-tid>/fail-nth:
- Write to this file of integer N makes N-th call in the current task fail
- (N is 0-based). Read from this file returns a single char 'Y' or 'N'
+ Write to this file of integer N makes N-th call in the task fail.
+ Read from this file returns a single char 'Y' or 'N'
that says if the fault setup with a previous write to this file was
injected or not, and disables the fault if it wasn't yet injected.
Note that this file enables all types of faults (slab, futex, etc).
@@ -320,7 +320,7 @@ int main()
system("echo N > /sys/kernel/debug/failslab/ignore-gfp-wait");
sprintf(buf, "/proc/self/task/%ld/fail-nth", syscall(SYS_gettid));
fail_nth = open(buf, O_RDWR);
- for (i = 0;; i++) {
+ for (i = 1;; i++) {
sprintf(buf, "%d", i);
write(fail_nth, buf, strlen(buf));
res = socketpair(AF_LOCAL, SOCK_STREAM, 0, fds);
@@ -339,7 +339,6 @@ int main()
An example output:
-0-th fault Y: res=-1/23
1-th fault Y: res=-1/23
2-th fault Y: res=-1/23
3-th fault Y: res=-1/12