md: check the return value for metadata_update_start
We shouldn't run related funs of md_cluster_ops in case
metadata_update_start returned failure.
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index d39a72a..a71b36f 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2245,6 +2245,7 @@
int sync_req;
int nospares = 0;
int any_badblocks_changed = 0;
+ int ret = -1;
if (mddev->ro) {
if (force_change)
@@ -2255,10 +2256,11 @@
if (mddev_is_clustered(mddev)) {
if (test_and_clear_bit(MD_CHANGE_DEVS, &mddev->flags))
force_change = 1;
- md_cluster_ops->metadata_update_start(mddev);
+ ret = md_cluster_ops->metadata_update_start(mddev);
/* Has someone else has updated the sb */
if (!does_sb_need_changing(mddev)) {
- md_cluster_ops->metadata_update_cancel(mddev);
+ if (ret == 0)
+ md_cluster_ops->metadata_update_cancel(mddev);
clear_bit(MD_CHANGE_PENDING, &mddev->flags);
return;
}
@@ -2412,7 +2414,7 @@
wake_up(&rdev->blocked_wait);
}
- if (mddev_is_clustered(mddev))
+ if (mddev_is_clustered(mddev) && ret == 0)
md_cluster_ops->metadata_update_finish(mddev);
}
EXPORT_SYMBOL(md_update_sb);
@@ -6031,13 +6033,14 @@
{
char b[BDEVNAME_SIZE];
struct md_rdev *rdev;
+ int ret = -1;
rdev = find_rdev(mddev, dev);
if (!rdev)
return -ENXIO;
if (mddev_is_clustered(mddev))
- md_cluster_ops->metadata_update_start(mddev);
+ ret = md_cluster_ops->metadata_update_start(mddev);
if (rdev->raid_disk < 0)
goto kick_rdev;
@@ -6049,7 +6052,7 @@
goto busy;
kick_rdev:
- if (mddev_is_clustered(mddev))
+ if (mddev_is_clustered(mddev) && ret == 0)
md_cluster_ops->remove_disk(mddev, rdev);
md_kick_rdev_from_array(rdev);
@@ -6058,7 +6061,7 @@
return 0;
busy:
- if (mddev_is_clustered(mddev))
+ if (mddev_is_clustered(mddev) && ret == 0)
md_cluster_ops->metadata_update_cancel(mddev);
printk(KERN_WARNING "md: cannot remove active disk %s from %s ...\n",