In general mddev->raid_disks can change unexpectedly while
conf->raid_disks will only change in a very controlled way. So change
some uses of one to the other.
The use of mddev->raid_disks will not cause actually problems but
this way is more consistent and safer in the long term.
Signed-off-by: NeilBrown <neilb@xxxxxxx>
---
drivers/md/raid1.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index a52979b..74d4ce5 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -276,7 +276,8 @@ static inline void update_head_pos(int disk, struct r1bio *r1_bio)
static int find_bio_disk(struct r1bio *r1_bio, struct bio *bio)
{
int mirror;
- int raid_disks = r1_bio->mddev->raid_disks;
+ struct r1conf *conf = r1_bio->mddev->private;
+ int raid_disks = conf->raid_disks;
for (mirror = 0; mirror < raid_disks; mirror++)
if (r1_bio->bios[mirror] == bio)
@@ -608,7 +609,7 @@ int md_raid1_congested(struct mddev *mddev, int bits)
return 1;
rcu_read_lock();
- for (i = 0; i < mddev->raid_disks; i++) {
+ for (i = 0; i < conf->raid_disks; i++) {
struct md_rdev *rdev = rcu_dereference(conf->mirrors[i].rdev);
if (rdev && !test_bit(Faulty, &rdev->flags)) {
struct request_queue *q = bdev_get_queue(rdev->bdev);
@@ -1287,7 +1288,7 @@ static int raid1_add_disk(struct mddev *mddev, struct md_rdev *rdev)
int mirror = 0;
struct mirror_info *p;
int first = 0;
- int last = mddev->raid_disks - 1;
+ int last = conf->raid_disks - 1;
if (mddev->recovery_disabled == conf->recovery_disabled)
return -EBUSY;
--
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