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authorJens Axboe <jens.axboe@oracle.com>2008-09-14 05:56:33 -0700
committerJens Axboe <jens.axboe@oracle.com>2008-10-09 08:56:17 +0200
commit581d4e28d9195aa8b2231383dbabc288988d615e (patch)
tree093bcac9a538ef67edcf91826f7532bdb88e6248 /block/genhd.c
parent0a0d96b03a1f3bfd6bc3ea08008699e8e59fccd9 (diff)
downloadlinux-581d4e28d9195aa8b2231383dbabc288988d615e.tar.bz2
block: add fault injection mechanism for faking request timeouts
Only works for the generic request timer handling. Allows one to sporadically ignore request completions, thus exercising the timeout handling. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/genhd.c')
-rw-r--r--block/genhd.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/block/genhd.c b/block/genhd.c
index 8acaff0154e3..4cd3433c99ac 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -817,6 +817,11 @@ static DEVICE_ATTR(stat, S_IRUGO, part_stat_show, NULL);
static struct device_attribute dev_attr_fail =
__ATTR(make-it-fail, S_IRUGO|S_IWUSR, part_fail_show, part_fail_store);
#endif
+#ifdef CONFIG_FAIL_IO_TIMEOUT
+static struct device_attribute dev_attr_fail_timeout =
+ __ATTR(io-timeout-fail, S_IRUGO|S_IWUSR, part_timeout_show,
+ part_timeout_store);
+#endif
static struct attribute *disk_attrs[] = {
&dev_attr_range.attr,
@@ -829,6 +834,9 @@ static struct attribute *disk_attrs[] = {
#ifdef CONFIG_FAIL_MAKE_REQUEST
&dev_attr_fail.attr,
#endif
+#ifdef CONFIG_FAIL_IO_TIMEOUT
+ &dev_attr_fail_timeout.attr,
+#endif
NULL
};