From 589f800bb12c5cd6c9167bbf9bf3cb70cd8e422c Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Sun, 20 Jul 2008 13:07:09 -0700
Subject: [PATCH] fastboot: make the raid autodetect code wait for all devices
to init
The raid autodetect code really needs to have all devices probed before
it can detect raid arrays; not doing so would give rather messy situations
where arrays would get detected as degraded while they shouldn't be etc.
This is in preparation of removing the "wait for everything to init"
code that makes everyone pay, not just raid users.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
---
init/do_mounts_md.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/init/do_mounts_md.c b/init/do_mounts_md.c
index 693d24694a6c..c0412a9dc003 100644
--- a/init/do_mounts_md.c
+++ b/init/do_mounts_md.c
@@ -267,9 +267,16 @@ __setup("md=", md_setup);
void __init md_run_setup(void)
{
create_dev("/dev/md0", MKDEV(MD_MAJOR, 0));
+
if (raid_noautodetect)
printk(KERN_INFO "md: Skipping autodetection of RAID arrays. (raid=noautodetect)\n");
else {
+ /*
+ * Since we don't want to detect and use half a raid array, we need to
+ * wait for the known devices to complete their probing
+ */
+ while (driver_probe_done() != 0)
+ msleep(100);
int fd = sys_open("/dev/md0", 0, 0);
if (fd >= 0) {
sys_ioctl(fd, RAID_AUTORUN, raid_autopart);
--
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