Enhance raid10_remove_disk to be able to remove ->replacement
as well as ->rdev
Signed-off-by: NeilBrown <neilb@xxxxxxx>
---
drivers/md/raid10.c | 57 +++++++++++++++++++++++++++++----------------------
1 files changed, 32 insertions(+), 25 deletions(-)
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index fffdc43..698696b 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1431,34 +1431,41 @@ static int raid10_remove_disk(struct mddev *mddev, struct md_rdev *rdev)
struct r10conf *conf = mddev->private;
int err = 0;
int number = rdev->raid_disk;
- struct mirror_info *p = conf->mirrors+ number;
+ struct md_rdev **rdevp;
+ struct mirror_info *p = conf->mirrors + number;
print_conf(conf);
- if (rdev == p->rdev) {
- if (test_bit(In_sync, &rdev->flags) ||
- atomic_read(&rdev->nr_pending)) {
- err = -EBUSY;
- goto abort;
- }
- /* Only remove faulty devices in recovery
- * is not possible.
- */
- if (!test_bit(Faulty, &rdev->flags) &&
- mddev->recovery_disabled != p->recovery_disabled &&
- enough(conf, -1)) {
- err = -EBUSY;
- goto abort;
- }
- p->rdev = NULL;
- synchronize_rcu();
- if (atomic_read(&rdev->nr_pending)) {
- /* lost the race, try later */
- err = -EBUSY;
- p->rdev = rdev;
- goto abort;
- }
- err = md_integrity_register(mddev);
+ if (rdev == p->rdev)
+ rdevp = &p->rdev;
+ else if (rdev == p->replacement)
+ rdevp = &p->replacement;
+ else
+ return 0;
+
+ if (test_bit(In_sync, &rdev->flags) ||
+ atomic_read(&rdev->nr_pending)) {
+ err = -EBUSY;
+ goto abort;
+ }
+ /* Only remove faulty devices if recovery
+ * is not possible.
+ */
+ if (!test_bit(Faulty, &rdev->flags) &&
+ mddev->recovery_disabled != p->recovery_disabled &&
+ enough(conf, -1)) {
+ err = -EBUSY;
+ goto abort;
}
+ *rdevp = NULL;
+ synchronize_rcu();
+ if (atomic_read(&rdev->nr_pending)) {
+ /* lost the race, try later */
+ err = -EBUSY;
+ *rdevp = rdev;
+ goto abort;
+ }
+ err = md_integrity_register(mddev);
+
abort:
print_conf(conf);
--
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