diff options
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 53 |
1 files changed, 36 insertions, 17 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 0cc30ecda4c..06ecea751a3 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -553,6 +553,9 @@ static mddev_t * mddev_find(dev_t unit) { mddev_t *mddev, *new = NULL; + if (unit && MAJOR(unit) != MD_MAJOR) + unit &= ~((1<<MdpMinorShift)-1); + retry: spin_lock(&all_mddevs_lock); @@ -777,8 +780,7 @@ void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev, bio->bi_end_io = super_written; atomic_inc(&mddev->pending_writes); - submit_bio(REQ_WRITE | REQ_SYNC | REQ_UNPLUG | REQ_FLUSH | REQ_FUA, - bio); + submit_bio(REQ_WRITE | REQ_SYNC | REQ_FLUSH | REQ_FUA, bio); } void md_super_wait(mddev_t *mddev) @@ -806,7 +808,7 @@ int sync_page_io(mdk_rdev_t *rdev, sector_t sector, int size, struct completion event; int ret; - rw |= REQ_SYNC | REQ_UNPLUG; + rw |= REQ_SYNC; bio->bi_bdev = (metadata_op && rdev->meta_bdev) ? rdev->meta_bdev : rdev->bdev; @@ -1801,8 +1803,12 @@ int md_integrity_register(mddev_t *mddev) mdname(mddev)); return -EINVAL; } - printk(KERN_NOTICE "md: data integrity on %s enabled\n", - mdname(mddev)); + printk(KERN_NOTICE "md: data integrity enabled on %s\n", mdname(mddev)); + if (bioset_integrity_create(mddev->bio_set, BIO_POOL_SIZE)) { + printk(KERN_ERR "md: failed to create integrity pool for %s\n", + mdname(mddev)); + return -EINVAL; + } return 0; } EXPORT_SYMBOL(md_integrity_register); @@ -4138,10 +4144,10 @@ array_size_store(mddev_t *mddev, const char *buf, size_t len) } mddev->array_sectors = sectors; - set_capacity(mddev->gendisk, mddev->array_sectors); - if (mddev->pers) + if (mddev->pers) { + set_capacity(mddev->gendisk, mddev->array_sectors); revalidate_disk(mddev->gendisk); - + } return len; } @@ -4624,6 +4630,7 @@ static int do_md_run(mddev_t *mddev) } set_capacity(mddev->gendisk, mddev->array_sectors); revalidate_disk(mddev->gendisk); + mddev->changed = 1; kobject_uevent(&disk_to_dev(mddev->gendisk)->kobj, KOBJ_CHANGE); out: return err; @@ -4712,6 +4719,7 @@ static void md_clean(mddev_t *mddev) mddev->sync_speed_min = mddev->sync_speed_max = 0; mddev->recovery = 0; mddev->in_sync = 0; + mddev->changed = 0; mddev->degraded = 0; mddev->safemode = 0; mddev->bitmap_info.offset = 0; @@ -4812,7 +4820,6 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open) __md_stop_writes(mddev); md_stop(mddev); mddev->queue->merge_bvec_fn = NULL; - mddev->queue->unplug_fn = NULL; mddev->queue->backing_dev_info.congested_fn = NULL; /* tell userspace to handle 'inactive' */ @@ -4827,6 +4834,7 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open) set_capacity(disk, 0); mutex_unlock(&mddev->open_mutex); + mddev->changed = 1; revalidate_disk(disk); if (mddev->ro) @@ -6011,7 +6019,7 @@ static int md_open(struct block_device *bdev, fmode_t mode) atomic_inc(&mddev->openers); mutex_unlock(&mddev->open_mutex); - check_disk_size_change(mddev->gendisk, bdev); + check_disk_change(bdev); out: return err; } @@ -6026,6 +6034,21 @@ static int md_release(struct gendisk *disk, fmode_t mode) return 0; } + +static int md_media_changed(struct gendisk *disk) +{ + mddev_t *mddev = disk->private_data; + + return mddev->changed; +} + +static int md_revalidate(struct gendisk *disk) +{ + mddev_t *mddev = disk->private_data; + + mddev->changed = 0; + return 0; +} static const struct block_device_operations md_fops = { .owner = THIS_MODULE, @@ -6036,6 +6059,8 @@ static const struct block_device_operations md_fops = .compat_ioctl = md_compat_ioctl, #endif .getgeo = md_getgeo, + .media_changed = md_media_changed, + .revalidate_disk= md_revalidate, }; static int md_thread(void * arg) @@ -6669,8 +6694,6 @@ EXPORT_SYMBOL_GPL(md_allow_write); void md_unplug(mddev_t *mddev) { - if (mddev->queue) - blk_unplug(mddev->queue); if (mddev->plug) mddev->plug->unplug_fn(mddev->plug); } @@ -6853,7 +6876,6 @@ void md_do_sync(mddev_t *mddev) >= mddev->resync_max - mddev->curr_resync_completed )) { /* time to update curr_resync_completed */ - md_unplug(mddev); wait_event(mddev->recovery_wait, atomic_read(&mddev->recovery_active) == 0); mddev->curr_resync_completed = j; @@ -6929,7 +6951,6 @@ void md_do_sync(mddev_t *mddev) * about not overloading the IO subsystem. (things like an * e2fsck being done on the RAID array should execute fast) */ - md_unplug(mddev); cond_resched(); currspeed = ((unsigned long)(io_sectors-mddev->resync_mark_cnt))/2 @@ -6948,8 +6969,6 @@ void md_do_sync(mddev_t *mddev) * this also signals 'finished resyncing' to md_stop */ out: - md_unplug(mddev); - wait_event(mddev->recovery_wait, !atomic_read(&mddev->recovery_active)); /* tell personality that we are finished */ @@ -7338,7 +7357,7 @@ static int __init md_init(void) { int ret = -ENOMEM; - md_wq = alloc_workqueue("md", WQ_RESCUER, 0); + md_wq = alloc_workqueue("md", WQ_MEM_RECLAIM, 0); if (!md_wq) goto err_wq; |