[PATCH] fault-injection capability for disk IO

[sfrench/cifs-2.6.git] / fs / partitions / check.c

diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 1901137f4eca3d66e46e30bec858f7c35ff154f8..3d73d94d93a7dd9321cdfe5d9750fcf25a836df5 100644 (file)
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -276,12 +276,39 @@ static struct part_attribute part_attr_stat = {
        .show   = part_stat_read
 };
 
+#ifdef CONFIG_FAIL_MAKE_REQUEST
+
+static ssize_t part_fail_store(struct hd_struct * p,
+                              const char *buf, size_t count)
+{
+       int i;
+
+       if (count > 0 && sscanf(buf, "%d", &i) > 0)
+               p->make_it_fail = (i == 0) ? 0 : 1;
+
+       return count;
+}
+static ssize_t part_fail_read(struct hd_struct * p, char *page)
+{
+       return sprintf(page, "%d\n", p->make_it_fail);
+}
+static struct part_attribute part_attr_fail = {
+       .attr = {.name = "make-it-fail", .mode = S_IRUGO | S_IWUSR },
+       .store  = part_fail_store,
+       .show   = part_fail_read
+};
+
+#endif
+
 static struct attribute * default_attrs[] = {
        &part_attr_uevent.attr,
        &part_attr_dev.attr,
        &part_attr_start.attr,
        &part_attr_size.attr,
        &part_attr_stat.attr,
+#ifdef CONFIG_FAIL_MAKE_REQUEST
+       &part_attr_fail.attr,
+#endif
        NULL,
 };