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path: root/drivers/md/multipath.c
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Diffstat (limited to 'drivers/md/multipath.c')
-rw-r--r--drivers/md/multipath.c35
1 files changed, 21 insertions, 14 deletions
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index 4ee31aa13c4..7140909f666 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -58,7 +58,7 @@ static void multipath_reschedule_retry (struct multipath_bh *mp_bh)
{
unsigned long flags;
mddev_t *mddev = mp_bh->mddev;
- multipath_conf_t *conf = mddev_to_conf(mddev);
+ multipath_conf_t *conf = mddev->private;
spin_lock_irqsave(&conf->device_lock, flags);
list_add(&mp_bh->retry_list, &conf->retry_list);
@@ -75,7 +75,7 @@ static void multipath_reschedule_retry (struct multipath_bh *mp_bh)
static void multipath_end_bh_io (struct multipath_bh *mp_bh, int err)
{
struct bio *bio = mp_bh->master_bio;
- multipath_conf_t *conf = mddev_to_conf(mp_bh->mddev);
+ multipath_conf_t *conf = mp_bh->mddev->private;
bio_endio(bio, err);
mempool_free(mp_bh, conf->pool);
@@ -85,7 +85,7 @@ static void multipath_end_request(struct bio *bio, int error)
{
int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
struct multipath_bh * mp_bh = (struct multipath_bh *)(bio->bi_private);
- multipath_conf_t *conf = mddev_to_conf(mp_bh->mddev);
+ multipath_conf_t *conf = mp_bh->mddev->private;
mdk_rdev_t *rdev = conf->multipaths[mp_bh->path].rdev;
if (uptodate)
@@ -107,7 +107,7 @@ static void multipath_end_request(struct bio *bio, int error)
static void unplug_slaves(mddev_t *mddev)
{
- multipath_conf_t *conf = mddev_to_conf(mddev);
+ multipath_conf_t *conf = mddev->private;
int i;
rcu_read_lock();
@@ -138,7 +138,7 @@ static void multipath_unplug(struct request_queue *q)
static int multipath_make_request (struct request_queue *q, struct bio * bio)
{
mddev_t *mddev = q->queuedata;
- multipath_conf_t *conf = mddev_to_conf(mddev);
+ multipath_conf_t *conf = mddev->private;
struct multipath_bh * mp_bh;
struct multipath_info *multipath;
const int rw = bio_data_dir(bio);
@@ -180,7 +180,7 @@ static int multipath_make_request (struct request_queue *q, struct bio * bio)
static void multipath_status (struct seq_file *seq, mddev_t *mddev)
{
- multipath_conf_t *conf = mddev_to_conf(mddev);
+ multipath_conf_t *conf = mddev->private;
int i;
seq_printf (seq, " [%d/%d] [", conf->raid_disks,
@@ -195,7 +195,7 @@ static void multipath_status (struct seq_file *seq, mddev_t *mddev)
static int multipath_congested(void *data, int bits)
{
mddev_t *mddev = data;
- multipath_conf_t *conf = mddev_to_conf(mddev);
+ multipath_conf_t *conf = mddev->private;
int i, ret = 0;
rcu_read_lock();
@@ -220,7 +220,7 @@ static int multipath_congested(void *data, int bits)
*/
static void multipath_error (mddev_t *mddev, mdk_rdev_t *rdev)
{
- multipath_conf_t *conf = mddev_to_conf(mddev);
+ multipath_conf_t *conf = mddev->private;
if (conf->working_disks <= 1) {
/*
@@ -294,7 +294,8 @@ static int multipath_add_disk(mddev_t *mddev, mdk_rdev_t *rdev)
for (path = first; path <= last; path++)
if ((p=conf->multipaths+path)->rdev == NULL) {
q = rdev->bdev->bd_disk->queue;
- blk_queue_stack_limits(mddev->queue, q);
+ disk_stack_limits(mddev->gendisk, rdev->bdev,
+ rdev->data_offset << 9);
/* as we don't honour merge_bvec_fn, we must never risk
* violating it, so limit ->max_sector to one PAGE, as
@@ -312,6 +313,7 @@ static int multipath_add_disk(mddev_t *mddev, mdk_rdev_t *rdev)
set_bit(In_sync, &rdev->flags);
rcu_assign_pointer(p->rdev, rdev);
err = 0;
+ md_integrity_add_rdev(rdev, mddev);
break;
}
@@ -344,7 +346,9 @@ static int multipath_remove_disk(mddev_t *mddev, int number)
/* lost the race, try later */
err = -EBUSY;
p->rdev = rdev;
+ goto abort;
}
+ md_integrity_register(mddev);
}
abort:
@@ -367,7 +371,7 @@ static void multipathd (mddev_t *mddev)
struct multipath_bh *mp_bh;
struct bio *bio;
unsigned long flags;
- multipath_conf_t *conf = mddev_to_conf(mddev);
+ multipath_conf_t *conf = mddev->private;
struct list_head *head = &conf->retry_list;
md_check_recovery(mddev);
@@ -421,6 +425,9 @@ static int multipath_run (mddev_t *mddev)
struct multipath_info *disk;
mdk_rdev_t *rdev;
+ if (md_check_no_bitmap(mddev))
+ return -EINVAL;
+
if (mddev->level != LEVEL_MULTIPATH) {
printk("multipath: %s: raid level not set to multipath IO (%d)\n",
mdname(mddev), mddev->level);
@@ -460,9 +467,9 @@ static int multipath_run (mddev_t *mddev)
disk = conf->multipaths + disk_idx;
disk->rdev = rdev;
+ disk_stack_limits(mddev->gendisk, rdev->bdev,
+ rdev->data_offset << 9);
- blk_queue_stack_limits(mddev->queue,
- rdev->bdev->bd_disk->queue);
/* as we don't honour merge_bvec_fn, we must never risk
* violating it, not that we ever expect a device with
* a merge_bvec_fn to be involved in multipath */
@@ -515,7 +522,7 @@ static int multipath_run (mddev_t *mddev)
mddev->queue->unplug_fn = multipath_unplug;
mddev->queue->backing_dev_info.congested_fn = multipath_congested;
mddev->queue->backing_dev_info.congested_data = mddev;
-
+ md_integrity_register(mddev);
return 0;
out_free_conf:
@@ -531,7 +538,7 @@ out:
static int multipath_stop (mddev_t *mddev)
{
- multipath_conf_t *conf = mddev_to_conf(mddev);
+ multipath_conf_t *conf = mddev->private;
md_unregister_thread(mddev->thread);
mddev->thread = NULL;