out_free_pages:
for ( ; i > 0 ; i--)
- put_page(bio->bi_io_vec[i-1].bv_page);
+ safe_put_page(bio->bi_io_vec[i-1].bv_page);
while (j--)
for (i = 0; i < RESYNC_PAGES ; i++)
- put_page(r10_bio->devs[j].bio->bi_io_vec[i].bv_page);
+ safe_put_page(r10_bio->devs[j].bio->bi_io_vec[i].bv_page);
j = -1;
out_free_bio:
while ( ++j < nalloc )
struct bio *bio = r10bio->devs[j].bio;
if (bio) {
for (i = 0; i < RESYNC_PAGES; i++) {
- put_page(bio->bi_io_vec[i].bv_page);
+ safe_put_page(bio->bi_io_vec[i].bv_page);
bio->bi_io_vec[i].bv_page = NULL;
}
bio_put(bio);
}
}
-static inline void free_r10bio(r10bio_t *r10_bio)
+static void free_r10bio(r10bio_t *r10_bio)
{
conf_t *conf = mddev_to_conf(r10_bio->mddev);
mempool_free(r10_bio, conf->r10bio_pool);
}
-static inline void put_buf(r10bio_t *r10_bio)
+static void put_buf(r10bio_t *r10_bio)
{
conf_t *conf = mddev_to_conf(r10_bio->mddev);
if (disk >= 0 && (rdev=rcu_dereference(conf->mirrors[disk].rdev))!= NULL)
atomic_inc(&conf->mirrors[disk].rdev->nr_pending);
+ else
+ disk = -1;
rcu_read_unlock();
return disk;
static void freeze_array(conf_t *conf)
{
/* stop syncio and normal IO and wait for everything to
- * go quite.
+ * go quiet.
* We increment barrier and nr_waiting, and then
* wait until barrier+nr_pending match nr_queued+2
*/
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;
if (test_bit(BIO_UPTODATE, &bio->bi_flags))
set_bit(R10BIO_Uptodate, &r10_bio->state);
- else if (!test_bit(MD_RECOVERY_SYNC, &conf->mddev->recovery))
- md_error(r10_bio->mddev,
- conf->mirrors[d].rdev);
+ else {
+ atomic_add(r10_bio->sectors,
+ &conf->mirrors[d].rdev->corrected_errors);
+ if (!test_bit(MD_RECOVERY_SYNC, &conf->mddev->recovery))
+ md_error(r10_bio->mddev,
+ conf->mirrors[d].rdev);
+ }
/* for reconstruct, we always reschedule after a read.
* for resync, only after all reads
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;
+ 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 ||
- sync_page_io(rdev->bdev,
+ 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;
+ while (sl != r10_bio->read_slot) {
+ int d;
+ if (sl==0)
+ sl = conf->copies;
+ sl--;
+ d = r10_bio->devs[sl].devnum;
+ 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) {
+ 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);
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;
for (j=0; j<conf->copies;j++) {
int d = r10_bio->devs[j].devnum;
if (conf->mirrors[d].rdev == NULL ||
- test_bit(Faulty, &conf->mirrors[d].rdev->flags))
+ test_bit(Faulty, &conf->mirrors[d].rdev->flags)) {
still_degraded = 1;
+ break;
+ }
}
must_sync = bitmap_start_sync(mddev->bitmap, sect,
&sync_blocks, still_degraded);
int nc, fc;
sector_t stride, size;
- if (mddev->level != 10) {
- printk(KERN_ERR "raid10: %s: raid level not set correctly... (%d)\n",
- mdname(mddev), mddev->level);
- goto out;
+ if (mddev->chunk_size == 0) {
+ printk(KERN_ERR "md/raid10: non-zero chunk size required.\n");
+ return -EINVAL;
}
+
nc = mddev->layout & 255;
fc = (mddev->layout >> 8) & 255;
if ((nc*fc) <2 || (nc*fc) > mddev->raid_disks ||
out_free_conf:
if (conf->r10bio_pool)
mempool_destroy(conf->r10bio_pool);
- put_page(conf->tmppage);
+ safe_put_page(conf->tmppage);
kfree(conf->mirrors);
kfree(conf);
mddev->private = NULL;
}
}
-static mdk_personality_t raid10_personality =
+static struct mdk_personality raid10_personality =
{
.name = "raid10",
+ .level = 10,
.owner = THIS_MODULE,
.make_request = make_request,
.run = run,
static int __init raid_init(void)
{
- return register_md_personality(RAID10, &raid10_personality);
+ return register_md_personality(&raid10_personality);
}
static void raid_exit(void)
{
- unregister_md_personality(RAID10);
+ unregister_md_personality(&raid10_personality);
}
module_init(raid_init);
module_exit(raid_exit);
MODULE_LICENSE("GPL");
MODULE_ALIAS("md-personality-9"); /* RAID10 */
+MODULE_ALIAS("md-raid10");
+MODULE_ALIAS("md-level-10");
git.openpandora.org / pandora-kernel.git / blobdiff