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-rw-r--r--drivers/md/dm-log-userspace-transfer.c10
-rw-r--r--drivers/md/dm-raid1.c2
-rw-r--r--drivers/md/dm-region-hash.c5
-rw-r--r--drivers/md/dm-snap-persistent.c2
-rw-r--r--drivers/md/dm-stripe.c2
-rw-r--r--drivers/md/dm-sysfs.c8
-rw-r--r--drivers/md/dm.c21
-rw-r--r--drivers/md/md.c14
-rw-r--r--drivers/md/raid5.c14
9 files changed, 42 insertions, 36 deletions
diff --git a/drivers/md/dm-log-userspace-transfer.c b/drivers/md/dm-log-userspace-transfer.c
index 54abf9e303b..f1c8cae70b4 100644
--- a/drivers/md/dm-log-userspace-transfer.c
+++ b/drivers/md/dm-log-userspace-transfer.c
@@ -172,11 +172,15 @@ int dm_consult_userspace(const char *uuid, uint64_t luid, int request_type,
{
int r = 0;
size_t dummy = 0;
- int overhead_size =
- sizeof(struct dm_ulog_request *) + sizeof(struct cn_msg);
+ int overhead_size = sizeof(struct dm_ulog_request) + sizeof(struct cn_msg);
struct dm_ulog_request *tfr = prealloced_ulog_tfr;
struct receiving_pkg pkg;
+ /*
+ * Given the space needed to hold the 'struct cn_msg' and
+ * 'struct dm_ulog_request' - do we have enough payload
+ * space remaining?
+ */
if (data_size > (DM_ULOG_PREALLOCED_SIZE - overhead_size)) {
DMINFO("Size of tfr exceeds preallocated size");
return -EINVAL;
@@ -191,7 +195,7 @@ resend:
*/
mutex_lock(&dm_ulog_lock);
- memset(tfr, 0, DM_ULOG_PREALLOCED_SIZE - overhead_size);
+ memset(tfr, 0, DM_ULOG_PREALLOCED_SIZE - sizeof(struct cn_msg));
memcpy(tfr->uuid, uuid, DM_UUID_LEN);
tfr->luid = luid;
tfr->seq = dm_ulog_seq++;
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index ad779bd13ae..6c1046df81f 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -724,7 +724,7 @@ static void do_writes(struct mirror_set *ms, struct bio_list *writes)
/*
* Dispatch io.
*/
- if (unlikely(ms->log_failure)) {
+ if (unlikely(ms->log_failure) && errors_handled(ms)) {
spin_lock_irq(&ms->lock);
bio_list_merge(&ms->failures, &sync);
spin_unlock_irq(&ms->lock);
diff --git a/drivers/md/dm-region-hash.c b/drivers/md/dm-region-hash.c
index 5f19ceb6fe9..168bd38f500 100644
--- a/drivers/md/dm-region-hash.c
+++ b/drivers/md/dm-region-hash.c
@@ -660,10 +660,9 @@ void dm_rh_recovery_end(struct dm_region *reg, int success)
spin_lock_irq(&rh->region_lock);
if (success)
list_add(&reg->list, &reg->rh->recovered_regions);
- else {
- reg->state = DM_RH_NOSYNC;
+ else
list_add(&reg->list, &reg->rh->failed_recovered_regions);
- }
+
spin_unlock_irq(&rh->region_lock);
rh->wakeup_workers(rh->context);
diff --git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c
index 7d08879689a..c097d8a4823 100644
--- a/drivers/md/dm-snap-persistent.c
+++ b/drivers/md/dm-snap-persistent.c
@@ -254,7 +254,7 @@ static int chunk_io(struct pstore *ps, void *area, chunk_t chunk, int rw,
* Issue the synchronous I/O from a different thread
* to avoid generic_make_request recursion.
*/
- INIT_WORK(&req.work, do_metadata);
+ INIT_WORK_ON_STACK(&req.work, do_metadata);
queue_work(ps->metadata_wq, &req.work);
flush_workqueue(ps->metadata_wq);
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index e0efc1adcaf..bd58703ee8f 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -110,7 +110,7 @@ static int stripe_ctr(struct dm_target *ti, unsigned int argc, char **argv)
}
stripes = simple_strtoul(argv[0], &end, 10);
- if (*end) {
+ if (!stripes || *end) {
ti->error = "Invalid stripe count";
return -EINVAL;
}
diff --git a/drivers/md/dm-sysfs.c b/drivers/md/dm-sysfs.c
index f53392df7b9..f91b40942e0 100644
--- a/drivers/md/dm-sysfs.c
+++ b/drivers/md/dm-sysfs.c
@@ -80,20 +80,12 @@ static struct sysfs_ops dm_sysfs_ops = {
};
/*
- * The sysfs structure is embedded in md struct, nothing to do here
- */
-static void dm_sysfs_release(struct kobject *kobj)
-{
-}
-
-/*
* dm kobject is embedded in mapped_device structure
* no need to define release function here
*/
static struct kobj_type dm_ktype = {
.sysfs_ops = &dm_sysfs_ops,
.default_attrs = dm_attrs,
- .release = dm_sysfs_release
};
/*
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 3167480b532..aa4e2aa86d4 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1595,10 +1595,15 @@ static int dm_prep_fn(struct request_queue *q, struct request *rq)
return BLKPREP_OK;
}
-static void map_request(struct dm_target *ti, struct request *clone,
- struct mapped_device *md)
+/*
+ * Returns:
+ * 0 : the request has been processed (not requeued)
+ * !0 : the request has been requeued
+ */
+static int map_request(struct dm_target *ti, struct request *clone,
+ struct mapped_device *md)
{
- int r;
+ int r, requeued = 0;
struct dm_rq_target_io *tio = clone->end_io_data;
/*
@@ -1625,6 +1630,7 @@ static void map_request(struct dm_target *ti, struct request *clone,
case DM_MAPIO_REQUEUE:
/* The target wants to requeue the I/O */
dm_requeue_unmapped_request(clone);
+ requeued = 1;
break;
default:
if (r > 0) {
@@ -1636,6 +1642,8 @@ static void map_request(struct dm_target *ti, struct request *clone,
dm_kill_unmapped_request(clone, r);
break;
}
+
+ return requeued;
}
/*
@@ -1677,12 +1685,17 @@ static void dm_request_fn(struct request_queue *q)
atomic_inc(&md->pending[rq_data_dir(clone)]);
spin_unlock(q->queue_lock);
- map_request(ti, clone, md);
+ if (map_request(ti, clone, md))
+ goto requeued;
+
spin_lock_irq(q->queue_lock);
}
goto out;
+requeued:
+ spin_lock_irq(q->queue_lock);
+
plug_and_out:
if (!elv_queue_empty(q))
/* Some requests still remain, retry later */
diff --git a/drivers/md/md.c b/drivers/md/md.c
index dd3dfe42d5a..a20a71e5efd 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4075,8 +4075,10 @@ static void mddev_delayed_delete(struct work_struct *ws)
{
mddev_t *mddev = container_of(ws, mddev_t, del_work);
- if (mddev->private == &md_redundancy_group) {
+ if (mddev->private) {
sysfs_remove_group(&mddev->kobj, &md_redundancy_group);
+ if (mddev->private != (void*)1)
+ sysfs_remove_group(&mddev->kobj, mddev->private);
if (mddev->sysfs_action)
sysfs_put(mddev->sysfs_action);
mddev->sysfs_action = NULL;
@@ -4287,10 +4289,7 @@ static int do_md_run(mddev_t * mddev)
sysfs_notify_dirent(rdev->sysfs_state);
}
- md_probe(mddev->unit, NULL, NULL);
disk = mddev->gendisk;
- if (!disk)
- return -ENOMEM;
spin_lock(&pers_lock);
pers = find_pers(mddev->level, mddev->clevel);
@@ -4530,8 +4529,8 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open)
mddev->queue->unplug_fn = NULL;
mddev->queue->backing_dev_info.congested_fn = NULL;
module_put(mddev->pers->owner);
- if (mddev->pers->sync_request)
- mddev->private = &md_redundancy_group;
+ if (mddev->pers->sync_request && mddev->private == NULL)
+ mddev->private = (void*)1;
mddev->pers = NULL;
/* tell userspace to handle 'inactive' */
sysfs_notify_dirent(mddev->sysfs_state);
@@ -4578,9 +4577,6 @@ out:
}
mddev->bitmap_info.offset = 0;
- /* make sure all md_delayed_delete calls have finished */
- flush_scheduled_work();
-
export_array(mddev);
mddev->array_sectors = 0;
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index e84204eb12d..ceb24afdc14 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -5136,9 +5136,8 @@ static int stop(mddev_t *mddev)
mddev->thread = NULL;
mddev->queue->backing_dev_info.congested_fn = NULL;
blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/
- sysfs_remove_group(&mddev->kobj, &raid5_attrs_group);
free_conf(conf);
- mddev->private = NULL;
+ mddev->private = &raid5_attrs_group;
return 0;
}
@@ -5464,11 +5463,11 @@ static int raid5_start_reshape(mddev_t *mddev)
!test_bit(Faulty, &rdev->flags)) {
if (raid5_add_disk(mddev, rdev) == 0) {
char nm[20];
- if (rdev->raid_disk >= conf->previous_raid_disks)
+ if (rdev->raid_disk >= conf->previous_raid_disks) {
set_bit(In_sync, &rdev->flags);
- else
+ added_devices++;
+ } else
rdev->recovery_offset = 0;
- added_devices++;
sprintf(nm, "rd%d", rdev->raid_disk);
if (sysfs_create_link(&mddev->kobj,
&rdev->kobj, nm))
@@ -5480,9 +5479,12 @@ static int raid5_start_reshape(mddev_t *mddev)
break;
}
+ /* When a reshape changes the number of devices, ->degraded
+ * is measured against the large of the pre and post number of
+ * devices.*/
if (mddev->delta_disks > 0) {
spin_lock_irqsave(&conf->device_lock, flags);
- mddev->degraded = (conf->raid_disks - conf->previous_raid_disks)
+ mddev->degraded += (conf->raid_disks - conf->previous_raid_disks)
- added_devices;
spin_unlock_irqrestore(&conf->device_lock, flags);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 18:19:26 +0000