--wait-clean: shorten timeout

Set the safemode timeout to a small value to get the array marked clean as
soon as possible.  We don't write 'clean' directly as it may cause mdmon to
miss a 'write-pending' event.

Include a couple fixes to sysfs_set_safemode():
1/ 0 pad the milliseconds field
2/ workaround input truncation in the kernel

Signed-off-by: Dan Williams <dan.j.williams@intel.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/sysfs.c b/sysfs.c
index 291a1dc..23d2f18 100644
--- a/sysfs.c
+++ b/sysfs.c
@@ -436,9 +436,10 @@ int sysfs_set_safemode(struct mdinfo *sra, unsigned long ms)
 	char delay[30];
 
 	sec = ms / 1000;
-	msec = ms - (sec * 1000);
+	msec = ms % 1000;
 
-	sprintf(delay, "%ld.%ld", sec, msec);
+	sprintf(delay, "%ld.%03ld\n", sec, msec);
+	/*             this '\n' ^ needed for kernels older than 2.6.28 */
 	return sysfs_set_str(sra, NULL, "safe_mode_delay", delay);
 }