X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=block%2Fgenhd.c;h=441432a142f231b871750caa5fed9a82c0cd750a;hb=414264f959cf46f49f974b3510400e12ac3624a6;hp=653919d50cd4d06aea68d8e027d15a473e5b4f5a;hpb=e993835441734c184d70d3716eed78a08eeb71c2;p=linux-2.6-omap-h63xx.git

diff --git a/block/genhd.c b/block/genhd.c
index 653919d50cd..441432a142f 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -5,6 +5,7 @@
 #include <linux/module.h>
 #include <linux/fs.h>
 #include <linux/genhd.h>
+#include <linux/kdev_t.h>
 #include <linux/kernel.h>
 #include <linux/blkdev.h>
 #include <linux/init.h>
@@ -417,6 +418,34 @@ static struct disk_attribute disk_attr_stat = {
 	.show	= disk_stats_read
 };
 
+#ifdef CONFIG_FAIL_MAKE_REQUEST
+
+static ssize_t disk_fail_store(struct gendisk * disk,
+			       const char *buf, size_t count)
+{
+	int i;
+
+	if (count > 0 && sscanf(buf, "%d", &i) > 0) {
+		if (i == 0)
+			disk->flags &= ~GENHD_FL_FAIL;
+		else
+			disk->flags |= GENHD_FL_FAIL;
+	}
+
+	return count;
+}
+static ssize_t disk_fail_read(struct gendisk * disk, char *page)
+{
+	return sprintf(page, "%d\n", disk->flags & GENHD_FL_FAIL ? 1 : 0);
+}
+static struct disk_attribute disk_attr_fail = {
+	.attr = {.name = "make-it-fail", .mode = S_IRUGO | S_IWUSR },
+	.store	= disk_fail_store,
+	.show	= disk_fail_read
+};
+
+#endif
+
 static struct attribute * default_attrs[] = {
 	&disk_attr_uevent.attr,
 	&disk_attr_dev.attr,
@@ -424,6 +453,9 @@ static struct attribute * default_attrs[] = {
 	&disk_attr_removable.attr,
 	&disk_attr_size.attr,
 	&disk_attr_stat.attr,
+#ifdef CONFIG_FAIL_MAKE_REQUEST
+	&disk_attr_fail.attr,
+#endif
 	NULL,
 };