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authorNeilBrown <neilb@suse.de>2011-12-23 10:17:56 +1100
committerNeilBrown <neilb@suse.de>2011-12-23 10:17:56 +1100
commit301946364e0aa67c4cfaec82e94c389993c9f7c6 (patch)
treefff6390d22ba68f6726700cd4979f0de4c205a6f /drivers/md/raid1.c
parentb7044d41b5a09ce9082699f74c8f10e0fe59f704 (diff)
md/raid1: Replace use of mddev->raid_disks with conf->raid_disks.
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@suse.de>
Diffstat (limited to 'drivers/md/raid1.c')
-rw-r--r--drivers/md/raid1.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 4317f8de143..ab8113cff7c 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -277,7 +277,8 @@ 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)
@@ -609,7 +610,7 @@ 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);
@@ -1286,7 +1287,7 @@ 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;