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-rw-r--r--drivers/md/Kconfig11
-rw-r--r--drivers/md/dm-target.c3
-rw-r--r--drivers/md/md.c50
-rw-r--r--drivers/md/raid0.c5
-rw-r--r--drivers/md/raid1.c48
-rw-r--r--drivers/md/raid10.c52
-rw-r--r--drivers/md/raid5.c34
-rw-r--r--drivers/md/raid6main.c31
8 files changed, 128 insertions, 106 deletions
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig
index fd2aae150ccc..ac25a48362ac 100644
--- a/drivers/md/Kconfig
+++ b/drivers/md/Kconfig
@@ -139,11 +139,12 @@ config MD_RAID5_RESHAPE
is online. However it is still EXPERIMENTAL code. It should
work, but please be sure that you have backups.
- You will need a version of mdadm newer than 2.3.1. During the
- early stage of reshape there is a critical section where live data
- is being over-written. A crash during this time needs extra care
- for recovery. The newer mdadm takes a copy of the data in the
- critical section and will restore it, if necessary, after a crash.
+ You will need mdadm verion 2.4.1 or later to use this
+ feature safely. During the early stage of reshape there is
+ a critical section where live data is being over-written. A
+ crash during this time needs extra care for recovery. The
+ newer mdadm takes a copy of the data in the critical section
+ and will restore it, if necessary, after a crash.
The mdadm usage is e.g.
mdadm --grow /dev/md1 --raid-disks=6
diff --git a/drivers/md/dm-target.c b/drivers/md/dm-target.c
index aecd9e0c2616..64fd8e79ea4c 100644
--- a/drivers/md/dm-target.c
+++ b/drivers/md/dm-target.c
@@ -78,8 +78,7 @@ void dm_put_target_type(struct target_type *t)
if (--ti->use == 0)
module_put(ti->tt.module);
- if (ti->use < 0)
- BUG();
+ BUG_ON(ti->use < 0);
up_read(&_lock);
return;
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 039e071c1007..f19b874753a9 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -163,9 +163,19 @@ void md_new_event(mddev_t *mddev)
{
atomic_inc(&md_event_count);
wake_up(&md_event_waiters);
+ sysfs_notify(&mddev->kobj, NULL, "sync_action");
}
EXPORT_SYMBOL_GPL(md_new_event);
+/* Alternate version that can be called from interrupts
+ * when calling sysfs_notify isn't needed.
+ */
+void md_new_event_inintr(mddev_t *mddev)
+{
+ atomic_inc(&md_event_count);
+ wake_up(&md_event_waiters);
+}
+
/*
* Enables to iterate over all existing md arrays
* all_mddevs_lock protects this list.
@@ -215,13 +225,11 @@ static void mddev_put(mddev_t *mddev)
return;
if (!mddev->raid_disks && list_empty(&mddev->disks)) {
list_del(&mddev->all_mddevs);
- /* that blocks */
+ spin_unlock(&all_mddevs_lock);
blk_cleanup_queue(mddev->queue);
- /* that also blocks */
kobject_unregister(&mddev->kobj);
- /* result blows... */
- }
- spin_unlock(&all_mddevs_lock);
+ } else
+ spin_unlock(&all_mddevs_lock);
}
static mddev_t * mddev_find(dev_t unit)
@@ -280,11 +288,6 @@ static inline int mddev_lock(mddev_t * mddev)
return mutex_lock_interruptible(&mddev->reconfig_mutex);
}
-static inline void mddev_lock_uninterruptible(mddev_t * mddev)
-{
- mutex_lock(&mddev->reconfig_mutex);
-}
-
static inline int mddev_trylock(mddev_t * mddev)
{
return mutex_trylock(&mddev->reconfig_mutex);
@@ -2258,7 +2261,7 @@ action_store(mddev_t *mddev, const char *page, size_t len)
} else {
if (cmd_match(page, "check"))
set_bit(MD_RECOVERY_CHECK, &mddev->recovery);
- else if (cmd_match(page, "repair"))
+ else if (!cmd_match(page, "repair"))
return -EINVAL;
set_bit(MD_RECOVERY_REQUESTED, &mddev->recovery);
set_bit(MD_RECOVERY_SYNC, &mddev->recovery);
@@ -2459,9 +2462,11 @@ md_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
if (!entry->show)
return -EIO;
- mddev_lock(mddev);
- rv = entry->show(mddev, page);
- mddev_unlock(mddev);
+ rv = mddev_lock(mddev);
+ if (!rv) {
+ rv = entry->show(mddev, page);
+ mddev_unlock(mddev);
+ }
return rv;
}
@@ -2475,9 +2480,11 @@ md_attr_store(struct kobject *kobj, struct attribute *attr,
if (!entry->store)
return -EIO;
- mddev_lock(mddev);
- rv = entry->store(mddev, page, length);
- mddev_unlock(mddev);
+ rv = mddev_lock(mddev);
+ if (!rv) {
+ rv = entry->store(mddev, page, length);
+ mddev_unlock(mddev);
+ }
return rv;
}
@@ -4151,7 +4158,7 @@ void md_error(mddev_t *mddev, mdk_rdev_t *rdev)
set_bit(MD_RECOVERY_INTR, &mddev->recovery);
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
md_wakeup_thread(mddev->thread);
- md_new_event(mddev);
+ md_new_event_inintr(mddev);
}
/* seq_file implementation /proc/mdstat */
@@ -4342,8 +4349,9 @@ static int md_seq_show(struct seq_file *seq, void *v)
return 0;
}
- if (mddev_lock(mddev)!=0)
+ if (mddev_lock(mddev) < 0)
return -EINTR;
+
if (mddev->pers || mddev->raid_disks || !list_empty(&mddev->disks)) {
seq_printf(seq, "%s : %sactive", mdname(mddev),
mddev->pers ? "" : "in");
@@ -5029,8 +5037,10 @@ static int md_notify_reboot(struct notifier_block *this,
printk(KERN_INFO "md: stopping all md devices.\n");
ITERATE_MDDEV(mddev,tmp)
- if (mddev_trylock(mddev))
+ if (mddev_trylock(mddev)) {
do_md_stop (mddev, 1);
+ mddev_unlock(mddev);
+ }
/*
* certain more exotic SCSI devices are known to be
* volatile wrt too early system reboots. While the
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 678f4dbbea1d..cb8c6317e4e5 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -331,13 +331,14 @@ static int raid0_run (mddev_t *mddev)
goto out_free_conf;
size = conf->strip_zone[cur].size;
- for (i=0; i< nb_zone; i++) {
- conf->hash_table[i] = conf->strip_zone + cur;
+ conf->hash_table[0] = conf->strip_zone + cur;
+ for (i=1; i< nb_zone; i++) {
while (size <= conf->hash_spacing) {
cur++;
size += conf->strip_zone[cur].size;
}
size -= conf->hash_spacing;
+ conf->hash_table[i] = conf->strip_zone + cur;
}
if (conf->preshift) {
conf->hash_spacing >>= conf->preshift;
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 3cb0872a845d..4070eff6f0f8 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -315,10 +315,11 @@ static int raid1_end_write_request(struct bio *bio, unsigned int bytes_done, int
if (r1_bio->bios[mirror] == bio)
break;
- if (error == -ENOTSUPP && test_bit(R1BIO_Barrier, &r1_bio->state)) {
+ if (error == -EOPNOTSUPP && test_bit(R1BIO_Barrier, &r1_bio->state)) {
set_bit(BarriersNotsupp, &conf->mirrors[mirror].rdev->flags);
set_bit(R1BIO_BarrierRetry, &r1_bio->state);
r1_bio->mddev->barriers_work = 0;
+ /* Don't rdev_dec_pending in this branch - keep it for the retry */
} else {
/*
* this branch is our 'one mirror IO has finished' event handler:
@@ -365,6 +366,7 @@ static int raid1_end_write_request(struct bio *bio, unsigned int bytes_done, int
}
}
}
+ rdev_dec_pending(conf->mirrors[mirror].rdev, conf->mddev);
}
/*
*
@@ -374,11 +376,9 @@ static int raid1_end_write_request(struct bio *bio, unsigned int bytes_done, int
if (atomic_dec_and_test(&r1_bio->remaining)) {
if (test_bit(R1BIO_BarrierRetry, &r1_bio->state)) {
reschedule_retry(r1_bio);
- /* Don't dec_pending yet, we want to hold
- * the reference over the retry
- */
goto out;
}
+ /* it really is the end of this request */
if (test_bit(R1BIO_BehindIO, &r1_bio->state)) {
/* free extra copy of the data pages */
int i = bio->bi_vcnt;
@@ -393,8 +393,6 @@ static int raid1_end_write_request(struct bio *bio, unsigned int bytes_done, int
md_write_end(r1_bio->mddev);
raid_end_bio_io(r1_bio);
}
-
- rdev_dec_pending(conf->mirrors[mirror].rdev, conf->mddev);
out:
if (to_put)
bio_put(to_put);
@@ -753,18 +751,24 @@ static int make_request(request_queue_t *q, struct bio * bio)
const int rw = bio_data_dir(bio);
int do_barriers;
- if (unlikely(!mddev->barriers_work && bio_barrier(bio))) {
- bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
- return 0;
- }
-
/*
* Register the new request and wait if the reconstruction
* thread has put up a bar for new requests.
* Continue immediately if no resync is active currently.
+ * We test barriers_work *after* md_write_start as md_write_start
+ * may cause the first superblock write, and that will check out
+ * if barriers work.
*/
+
md_write_start(mddev, bio); /* wait on superblock update early */
+ if (unlikely(!mddev->barriers_work && bio_barrier(bio))) {
+ if (rw == WRITE)
+ md_write_end(mddev);
+ bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
+ return 0;
+ }
+
wait_barrier(conf);
disk_stat_inc(mddev->gendisk, ios[rw]);
@@ -1135,8 +1139,19 @@ static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error)
mirror = i;
break;
}
- if (!uptodate)
+ if (!uptodate) {
+ int sync_blocks = 0;
+ sector_t s = r1_bio->sector;
+ long sectors_to_go = r1_bio->sectors;
+ /* make sure these bits doesn't get cleared. */
+ do {
+ bitmap_end_sync(mddev->bitmap, r1_bio->sector,
+ &sync_blocks, 1);
+ s += sync_blocks;
+ sectors_to_go -= sync_blocks;
+ } while (sectors_to_go > 0);
md_error(mddev, conf->mirrors[mirror].rdev);
+ }
update_head_pos(mirror, r1_bio);
@@ -1393,10 +1408,11 @@ static void raid1d(mddev_t *mddev)
unplug = 1;
} else if (test_bit(R1BIO_BarrierRetry, &r1_bio->state)) {
/* some requests in the r1bio were BIO_RW_BARRIER
- * requests which failed with -ENOTSUPP. Hohumm..
+ * requests which failed with -EOPNOTSUPP. Hohumm..
* Better resubmit without the barrier.
* We know which devices to resubmit for, because
* all others have had their bios[] entry cleared.
+ * We already have a nr_pending reference on these rdevs.
*/
int i;
clear_bit(R1BIO_BarrierRetry, &r1_bio->state);
@@ -1547,8 +1563,7 @@ static int init_resync(conf_t *conf)
int buffs;
buffs = RESYNC_WINDOW / RESYNC_BLOCK_SIZE;
- if (conf->r1buf_pool)
- BUG();
+ BUG_ON(conf->r1buf_pool);
conf->r1buf_pool = mempool_create(buffs, r1buf_pool_alloc, r1buf_pool_free,
conf->poolinfo);
if (!conf->r1buf_pool)
@@ -1721,8 +1736,7 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
!conf->fullsync &&
!test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery))
break;
- if (sync_blocks < (PAGE_SIZE>>9))
- BUG();
+ BUG_ON(sync_blocks < (PAGE_SIZE>>9));
if (len > (sync_blocks<<9))
len = sync_blocks<<9;
}
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index ab90a6d12020..1440935414e6 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1117,8 +1117,7 @@ static int end_sync_read(struct bio *bio, unsigned int bytes_done, int error)
for (i=0; i<conf->copies; i++)
if (r10_bio->devs[i].bio == bio)
break;
- if (i == conf->copies)
- BUG();
+ BUG_ON(i == conf->copies);
update_head_pos(i, r10_bio);
d = r10_bio->devs[i].devnum;
@@ -1408,43 +1407,54 @@ static void raid10d(mddev_t *mddev)
if (s > (PAGE_SIZE>>9))
s = PAGE_SIZE >> 9;
+ rcu_read_lock();
do {
int d = r10_bio->devs[sl].devnum;
- rdev = conf->mirrors[d].rdev;
+ rdev = rcu_dereference(conf->mirrors[d].rdev);
if (rdev &&
- test_bit(In_sync, &rdev->flags) &&
- sync_page_io(rdev->bdev,
- r10_bio->devs[sl].addr +
- sect + rdev->data_offset,
- s<<9,
- conf->tmppage, READ))
- success = 1;
- else {
- sl++;
- if (sl == conf->copies)
- sl = 0;
+ test_bit(In_sync, &rdev->flags)) {
+ atomic_inc(&rdev->nr_pending);
+ rcu_read_unlock();
+ success = sync_page_io(rdev->bdev,
+ r10_bio->devs[sl].addr +
+ sect + rdev->data_offset,
+ s<<9,
+ conf->tmppage, READ);
+ rdev_dec_pending(rdev, mddev);
+ rcu_read_lock();
+ if (success)
+ break;
}
+ sl++;
+ if (sl == conf->copies)
+ sl = 0;
} while (!success && sl != r10_bio->read_slot);
+ rcu_read_unlock();
if (success) {
int start = sl;
/* write it back and re-read */
+ rcu_read_lock();
while (sl != r10_bio->read_slot) {
int d;
if (sl==0)
sl = conf->copies;
sl--;
d = r10_bio->devs[sl].devnum;
- rdev = conf->mirrors[d].rdev;
- atomic_add(s, &rdev->corrected_errors);
+ rdev = rcu_dereference(conf->mirrors[d].rdev);
if (rdev &&
test_bit(In_sync, &rdev->flags)) {
+ atomic_inc(&rdev->nr_pending);
+ rcu_read_unlock();
+ atomic_add(s, &rdev->corrected_errors);
if (sync_page_io(rdev->bdev,
r10_bio->devs[sl].addr +
sect + rdev->data_offset,
s<<9, conf->tmppage, WRITE) == 0)
/* Well, this device is dead */
md_error(mddev, rdev);
+ rdev_dec_pending(rdev, mddev);
+ rcu_read_lock();
}
}
sl = start;
@@ -1454,17 +1464,22 @@ static void raid10d(mddev_t *mddev)
sl = conf->copies;
sl--;
d = r10_bio->devs[sl].devnum;
- rdev = conf->mirrors[d].rdev;
+ rdev = rcu_dereference(conf->mirrors[d].rdev);
if (rdev &&
test_bit(In_sync, &rdev->flags)) {
+ atomic_inc(&rdev->nr_pending);
+ rcu_read_unlock();
if (sync_page_io(rdev->bdev,
r10_bio->devs[sl].addr +
sect + rdev->data_offset,
s<<9, conf->tmppage, READ) == 0)
/* Well, this device is dead */
md_error(mddev, rdev);
+ rdev_dec_pending(rdev, mddev);
+ rcu_read_lock();
}
}
+ rcu_read_unlock();
} else {
/* Cannot read from anywhere -- bye bye array */
md_error(mddev, conf->mirrors[r10_bio->devs[r10_bio->read_slot].devnum].rdev);
@@ -1518,8 +1533,7 @@ static int init_resync(conf_t *conf)
int buffs;
buffs = RESYNC_WINDOW / RESYNC_BLOCK_SIZE;
- if (conf->r10buf_pool)
- BUG();
+ BUG_ON(conf->r10buf_pool);
conf->r10buf_pool = mempool_create(buffs, r10buf_pool_alloc, r10buf_pool_free, conf);
if (!conf->r10buf_pool)
return -ENOMEM;
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index dae740adaf65..31843604049c 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -73,10 +73,8 @@ static void print_raid5_conf (raid5_conf_t *conf);
static void __release_stripe(raid5_conf_t *conf, struct stripe_head *sh)
{
if (atomic_dec_and_test(&sh->count)) {
- if (!list_empty(&sh->lru))
- BUG();
- if (atomic_read(&conf->active_stripes)==0)
- BUG();
+ BUG_ON(!list_empty(&sh->lru));
+ BUG_ON(atomic_read(&conf->active_stripes)==0);
if (test_bit(STRIPE_HANDLE, &sh->state)) {
if (test_bit(STRIPE_DELAYED, &sh->state))
list_add_tail(&sh->lru, &conf->delayed_list);
@@ -184,10 +182,8 @@ static void init_stripe(struct stripe_head *sh, sector_t sector, int pd_idx, int
raid5_conf_t *conf = sh->raid_conf;
int i;
- if (atomic_read(&sh->count) != 0)
- BUG();
- if (test_bit(STRIPE_HANDLE, &sh->state))
- BUG();
+ BUG_ON(atomic_read(&sh->count) != 0);
+ BUG_ON(test_bit(STRIPE_HANDLE, &sh->state));
CHECK_DEVLOCK();
PRINTK("init_stripe called, stripe %llu\n",
@@ -269,8 +265,7 @@ static struct stripe_head *get_active_stripe(raid5_conf_t *conf, sector_t sector
init_stripe(sh, sector, pd_idx, disks);
} else {
if (atomic_read(&sh->count)) {
- if (!list_empty(&sh->lru))
- BUG();
+ BUG_ON(!list_empty(&sh->lru));
} else {
if (!test_bit(STRIPE_HANDLE, &sh->state))
atomic_inc(&conf->active_stripes);
@@ -465,8 +460,7 @@ static int drop_one_stripe(raid5_conf_t *conf)
spin_unlock_irq(&conf->device_lock);
if (!sh)
return 0;
- if (atomic_read(&sh->count))
- BUG();
+ BUG_ON(atomic_read(&sh->count));
shrink_buffers(sh, conf->pool_size);
kmem_cache_free(conf->slab_cache, sh);
atomic_dec(&conf->active_stripes);
@@ -882,8 +876,7 @@ static void compute_parity(struct stripe_head *sh, int method)
ptr[0] = page_address(sh->dev[pd_idx].page);
switch(method) {
case READ_MODIFY_WRITE:
- if (!test_bit(R5_UPTODATE, &sh->dev[pd_idx].flags))
- BUG();
+ BUG_ON(!test_bit(R5_UPTODATE, &sh->dev[pd_idx].flags));
for (i=disks ; i-- ;) {
if (i==pd_idx)
continue;
@@ -896,7 +889,7 @@ static void compute_parity(struct stripe_head *sh, int method)
if (test_and_clear_bit(R5_Overlap, &sh->dev[i].flags))
wake_up(&conf->wait_for_overlap);
- if (sh->dev[i].written) BUG();
+ BUG_ON(sh->dev[i].written);
sh->dev[i].written = chosen;
check_xor();
}
@@ -912,7 +905,7 @@ static void compute_parity(struct stripe_head *sh, int method)
if (test_and_clear_bit(R5_Overlap, &sh->dev[i].flags))
wake_up(&conf->wait_for_overlap);
- if (sh->dev[i].written) BUG();
+ BUG_ON(sh->dev[i].written);
sh->dev[i].written = chosen;
}
break;
@@ -995,8 +988,7 @@ static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx, in
if (*bip && (*bip)->bi_sector < bi->bi_sector + ((bi->bi_size)>>9))
goto overlap;
- if (*bip && bi->bi_next && (*bip) != bi->bi_next)
- BUG();
+ BUG_ON(*bip && bi->bi_next && (*bip) != bi->bi_next);
if (*bip)
bi->bi_next = *bip;
*bip = bi;
@@ -1430,8 +1422,7 @@ static void handle_stripe(struct stripe_head *sh)
set_bit(STRIPE_HANDLE, &sh->state);
if (failed == 0) {
char *pagea;
- if (uptodate != disks)
- BUG();
+ BUG_ON(uptodate != disks);
compute_parity(sh, CHECK_PARITY);
uptodate--;
pagea = page_address(sh->dev[sh->pd_idx].page);
@@ -2096,8 +2087,7 @@ static void raid5d (mddev_t *mddev)
list_del_init(first);
atomic_inc(&sh->count);
- if (atomic_read(&sh->count)!= 1)
- BUG();
+ BUG_ON(atomic_read(&sh->count)!= 1);
spin_unlock_irq(&conf->device_lock);
handled++;
diff --git a/drivers/md/raid6main.c b/drivers/md/raid6main.c
index 6df4930fddec..bc69355e0100 100644
--- a/drivers/md/raid6main.c
+++ b/drivers/md/raid6main.c
@@ -91,10 +91,8 @@ static void print_raid6_conf (raid6_conf_t *conf);
static void __release_stripe(raid6_conf_t *conf, struct stripe_head *sh)
{
if (atomic_dec_and_test(&sh->count)) {
- if (!list_empty(&sh->lru))
- BUG();
- if (atomic_read(&conf->active_stripes)==0)
- BUG();
+ BUG_ON(!list_empty(&sh->lru));
+ BUG_ON(atomic_read(&conf->active_stripes)==0);
if (test_bit(STRIPE_HANDLE, &sh->state)) {
if (test_bit(STRIPE_DELAYED, &sh->state))
list_add_tail(&sh->lru, &conf->delayed_list);
@@ -202,10 +200,8 @@ static void init_stripe(struct stripe_head *sh, sector_t sector, int pd_idx)
raid6_conf_t *conf = sh->raid_conf;
int disks = conf->raid_disks, i;
- if (atomic_read(&sh->count) != 0)
- BUG();
- if (test_bit(STRIPE_HANDLE, &sh->state))
- BUG();
+ BUG_ON(atomic_read(&sh->count) != 0);
+ BUG_ON(test_bit(STRIPE_HANDLE, &sh->state));
CHECK_DEVLOCK();
PRINTK("init_stripe called, stripe %llu\n",
@@ -284,13 +280,11 @@ static struct stripe_head *get_active_stripe(raid6_conf_t *conf, sector_t sector
init_stripe(sh, sector, pd_idx);
} else {
if (atomic_read(&sh->count)) {
- if (!list_empty(&sh->lru))
- BUG();
+ BUG_ON(!list_empty(&sh->lru));
} else {
if (!test_bit(STRIPE_HANDLE, &sh->state))
atomic_inc(&conf->active_stripes);
- if (list_empty(&sh->lru))
- BUG();
+ BUG_ON(list_empty(&sh->lru));
list_del_init(&sh->lru);
}
}
@@ -353,8 +347,7 @@ static int drop_one_stripe(raid6_conf_t *conf)
spin_unlock_irq(&conf->device_lock);
if (!sh)
return 0;
- if (atomic_read(&sh->count))
- BUG();
+ BUG_ON(atomic_read(&sh->count));
shrink_buffers(sh, conf->raid_disks);
kmem_cache_free(conf->slab_cache, sh);
atomic_dec(&conf->active_stripes);
@@ -780,7 +773,7 @@ static void compute_parity(struct stripe_head *sh, int method)
if (test_and_clear_bit(R5_Overlap, &sh->dev[i].flags))
wake_up(&conf->wait_for_overlap);
- if (sh->dev[i].written) BUG();
+ BUG_ON(sh->dev[i].written);
sh->dev[i].written = chosen;
}
break;
@@ -970,8 +963,7 @@ static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx, in
if (*bip && (*bip)->bi_sector < bi->bi_sector + ((bi->bi_size)>>9))
goto overlap;
- if (*bip && bi->bi_next && (*bip) != bi->bi_next)
- BUG();
+ BUG_ON(*bip && bi->bi_next && (*bip) != bi->bi_next);
if (*bip)
bi->bi_next = *bip;
*bip = bi;
@@ -1906,8 +1898,7 @@ static void raid6d (mddev_t *mddev)
list_del_init(first);
atomic_inc(&sh->count);
- if (atomic_read(&sh->count)!= 1)
- BUG();
+ BUG_ON(atomic_read(&sh->count)!= 1);
spin_unlock_irq(&conf->device_lock);
handled++;
@@ -2151,6 +2142,8 @@ static int run(mddev_t *mddev)
}
/* Ok, everything is just fine now */
+ sysfs_create_group(&mddev->kobj, &raid6_attrs_group);
+
mddev->array_size = mddev->size * (mddev->raid_disks - 2);
mddev->queue->unplug_fn = raid6_unplug_device;
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-20 05:27:26 +0300