X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fmd%2Fmd.c;h=1b1d32694f6fc8eddf7a8c4cccc6d836b5e88054;hb=6f1e94031f5891e8b375e5ff5d48672c250be353;hp=21b04d39ba3b16376dd76568ab37095866db579f;hpb=d4430d62fa77208824a37fe6f85ab2831d274769;p=linux-2.6-omap-h63xx.git diff --git a/drivers/md/md.c b/drivers/md/md.c index 21b04d39ba3..1b1d32694f6 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -222,6 +222,9 @@ static void mddev_put(mddev_t *mddev) list_del(&mddev->all_mddevs); spin_unlock(&all_mddevs_lock); blk_cleanup_queue(mddev->queue); + if (mddev->sysfs_state) + sysfs_put(mddev->sysfs_state); + mddev->sysfs_state = NULL; kobject_put(&mddev->kobj); } else spin_unlock(&all_mddevs_lock); @@ -1459,6 +1462,8 @@ static int bind_rdev_to_array(mdk_rdev_t * rdev, mddev_t * mddev) kobject_del(&rdev->kobj); goto fail; } + rdev->sysfs_state = sysfs_get_dirent(rdev->kobj.sd, "state"); + list_add_rcu(&rdev->same_set, &mddev->disks); bd_claim_by_disk(rdev->bdev, rdev->bdev->bd_holder, mddev->gendisk); return 0; @@ -1488,7 +1493,8 @@ static void unbind_rdev_from_array(mdk_rdev_t * rdev) printk(KERN_INFO "md: unbind<%s>\n", bdevname(rdev->bdev,b)); rdev->mddev = NULL; sysfs_remove_link(&rdev->kobj, "block"); - + sysfs_put(rdev->sysfs_state); + rdev->sysfs_state = NULL; /* We need to delay this, otherwise we can deadlock when * writing to 'remove' to "dev/state". We also need * to delay it due to rcu usage. @@ -1520,7 +1526,7 @@ static int lock_rdev(mdk_rdev_t *rdev, dev_t dev, int shared) if (err) { printk(KERN_ERR "md: could not bd_claim %s.\n", bdevname(bdev, b)); - blkdev_put(bdev); + blkdev_put(bdev, FMODE_READ|FMODE_WRITE); return err; } if (!shared) @@ -1536,7 +1542,7 @@ static void unlock_rdev(mdk_rdev_t *rdev) if (!bdev) MD_BUG(); bd_release(bdev); - blkdev_put(bdev); + blkdev_put(bdev, FMODE_READ|FMODE_WRITE); } void md_autodetect_dev(dev_t dev); @@ -1923,8 +1929,8 @@ state_store(mdk_rdev_t *rdev, const char *buf, size_t len) err = 0; } - if (!err) - sysfs_notify(&rdev->kobj, NULL, "state"); + if (!err && rdev->sysfs_state) + sysfs_notify_dirent(rdev->sysfs_state); return err ? err : len; } static struct rdev_sysfs_entry rdev_state = @@ -2019,7 +2025,7 @@ slot_store(mdk_rdev_t *rdev, const char *buf, size_t len) rdev->raid_disk = -1; return err; } else - sysfs_notify(&rdev->kobj, NULL, "state"); + sysfs_notify_dirent(rdev->sysfs_state); sprintf(nm, "rd%d", rdev->raid_disk); if (sysfs_create_link(&rdev->mddev->kobj, &rdev->kobj, nm)) printk(KERN_WARNING @@ -2036,7 +2042,7 @@ slot_store(mdk_rdev_t *rdev, const char *buf, size_t len) clear_bit(Faulty, &rdev->flags); clear_bit(WriteMostly, &rdev->flags); set_bit(In_sync, &rdev->flags); - sysfs_notify(&rdev->kobj, NULL, "state"); + sysfs_notify_dirent(rdev->sysfs_state); } return len; } @@ -2770,7 +2776,7 @@ array_state_store(mddev_t *mddev, const char *buf, size_t len) if (err) return err; else { - sysfs_notify(&mddev->kobj, NULL, "array_state"); + sysfs_notify_dirent(mddev->sysfs_state); return len; } } @@ -3457,6 +3463,11 @@ static struct kobject *md_probe(dev_t dev, int *part, void *data) disk->fops = &md_fops; disk->private_data = mddev; disk->queue = mddev->queue; + /* Allow extended partitions. This makes the + * 'mdp' device redundant, but we can really + * remove it now. + */ + disk->flags |= GENHD_FL_EXT_DEVT; add_disk(disk); mddev->gendisk = disk; error = kobject_init_and_add(&mddev->kobj, &md_ktype, @@ -3465,8 +3476,10 @@ static struct kobject *md_probe(dev_t dev, int *part, void *data) if (error) printk(KERN_WARNING "md: cannot register %s/md - name in use\n", disk->disk_name); - else + else { kobject_uevent(&mddev->kobj, KOBJ_ADD); + mddev->sysfs_state = sysfs_get_dirent(mddev->kobj.sd, "array_state"); + } return NULL; } @@ -3477,7 +3490,7 @@ static void md_safemode_timeout(unsigned long data) if (!atomic_read(&mddev->writes_pending)) { mddev->safemode = 1; if (mddev->external) - set_bit(MD_NOTIFY_ARRAY_STATE, &mddev->flags); + sysfs_notify_dirent(mddev->sysfs_state); } md_wakeup_thread(mddev->thread); } @@ -3578,7 +3591,7 @@ static int do_md_run(mddev_t * mddev) return -EINVAL; } } - sysfs_notify(&rdev->kobj, NULL, "state"); + sysfs_notify_dirent(rdev->sysfs_state); } md_probe(mddev->unit, NULL, NULL); @@ -3740,7 +3753,7 @@ static int do_md_run(mddev_t * mddev) mddev->changed = 1; md_new_event(mddev); - sysfs_notify(&mddev->kobj, NULL, "array_state"); + sysfs_notify_dirent(mddev->sysfs_state); sysfs_notify(&mddev->kobj, NULL, "sync_action"); sysfs_notify(&mddev->kobj, NULL, "degraded"); kobject_uevent(&disk_to_dev(mddev->gendisk)->kobj, KOBJ_CHANGE); @@ -3767,7 +3780,7 @@ static int restart_array(mddev_t *mddev) set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); md_wakeup_thread(mddev->thread); md_wakeup_thread(mddev->sync_thread); - sysfs_notify(&mddev->kobj, NULL, "array_state"); + sysfs_notify_dirent(mddev->sysfs_state); return 0; } @@ -3847,7 +3860,7 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open) module_put(mddev->pers->owner); mddev->pers = NULL; /* tell userspace to handle 'inactive' */ - sysfs_notify(&mddev->kobj, NULL, "array_state"); + sysfs_notify_dirent(mddev->sysfs_state); set_capacity(disk, 0); mddev->changed = 1; @@ -3927,13 +3940,14 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open) mddev->degraded = 0; mddev->barriers_work = 0; mddev->safemode = 0; + kobject_uevent(&disk_to_dev(mddev->gendisk)->kobj, KOBJ_CHANGE); } else if (mddev->pers) printk(KERN_INFO "md: %s switched to read-only mode.\n", mdname(mddev)); err = 0; md_new_event(mddev); - sysfs_notify(&mddev->kobj, NULL, "array_state"); + sysfs_notify_dirent(mddev->sysfs_state); out: return err; } @@ -4297,7 +4311,7 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info) if (err) export_rdev(rdev); else - sysfs_notify(&rdev->kobj, NULL, "state"); + sysfs_notify_dirent(rdev->sysfs_state); md_update_sb(mddev, 1); if (mddev->degraded) @@ -4785,7 +4799,7 @@ static int md_getgeo(struct block_device *bdev, struct hd_geometry *geo) return 0; } -static int md_ioctl(struct inode *inode, struct file *file, +static int md_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg) { int err = 0; @@ -4823,7 +4837,7 @@ static int md_ioctl(struct inode *inode, struct file *file, * Commands creating/starting a new array: */ - mddev = inode->i_bdev->bd_disk->private_data; + mddev = bdev->bd_disk->private_data; if (!mddev) { BUG(); @@ -4938,7 +4952,7 @@ static int md_ioctl(struct inode *inode, struct file *file, if (_IOC_TYPE(cmd) == MD_MAJOR && mddev->ro && mddev->pers) { if (mddev->ro == 2) { mddev->ro = 0; - sysfs_notify(&mddev->kobj, NULL, "array_state"); + sysfs_notify_dirent(mddev->sysfs_state); set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); md_wakeup_thread(mddev->thread); } else { @@ -4996,13 +5010,13 @@ abort: return err; } -static int md_open(struct inode *inode, struct file *file) +static int md_open(struct block_device *bdev, fmode_t mode) { /* * Succeed if we can lock the mddev, which confirms that * it isn't being stopped right now. */ - mddev_t *mddev = inode->i_bdev->bd_disk->private_data; + mddev_t *mddev = bdev->bd_disk->private_data; int err; if ((err = mutex_lock_interruptible_nested(&mddev->reconfig_mutex, 1))) @@ -5013,14 +5027,14 @@ static int md_open(struct inode *inode, struct file *file) atomic_inc(&mddev->openers); mddev_unlock(mddev); - check_disk_change(inode->i_bdev); + check_disk_change(bdev); out: return err; } -static int md_release(struct inode *inode, struct file * file) +static int md_release(struct gendisk *disk, fmode_t mode) { - mddev_t *mddev = inode->i_bdev->bd_disk->private_data; + mddev_t *mddev = disk->private_data; BUG_ON(!mddev); atomic_dec(&mddev->openers); @@ -5046,9 +5060,9 @@ static int md_revalidate(struct gendisk *disk) static struct block_device_operations md_fops = { .owner = THIS_MODULE, - .__open = md_open, - .__release = md_release, - .__ioctl = md_ioctl, + .open = md_open, + .release = md_release, + .locked_ioctl = md_ioctl, .getgeo = md_getgeo, .media_changed = md_media_changed, .revalidate_disk= md_revalidate, @@ -5612,7 +5626,7 @@ void md_write_start(mddev_t *mddev, struct bio *bi) spin_unlock_irq(&mddev->write_lock); } if (did_change) - sysfs_notify(&mddev->kobj, NULL, "array_state"); + sysfs_notify_dirent(mddev->sysfs_state); wait_event(mddev->sb_wait, !test_bit(MD_CHANGE_CLEAN, &mddev->flags) && !test_bit(MD_CHANGE_PENDING, &mddev->flags)); @@ -5655,7 +5669,7 @@ int md_allow_write(mddev_t *mddev) mddev->safemode = 1; spin_unlock_irq(&mddev->write_lock); md_update_sb(mddev, 0); - sysfs_notify(&mddev->kobj, NULL, "array_state"); + sysfs_notify_dirent(mddev->sysfs_state); } else spin_unlock_irq(&mddev->write_lock); @@ -6048,9 +6062,6 @@ void md_check_recovery(mddev_t *mddev) if (mddev->bitmap) bitmap_daemon_work(mddev->bitmap); - if (test_and_clear_bit(MD_NOTIFY_ARRAY_STATE, &mddev->flags)) - sysfs_notify(&mddev->kobj, NULL, "array_state"); - if (mddev->ro) return; @@ -6103,7 +6114,7 @@ void md_check_recovery(mddev_t *mddev) mddev->safemode = 0; spin_unlock_irq(&mddev->write_lock); if (did_change) - sysfs_notify(&mddev->kobj, NULL, "array_state"); + sysfs_notify_dirent(mddev->sysfs_state); } if (mddev->flags) @@ -6111,7 +6122,7 @@ void md_check_recovery(mddev_t *mddev) rdev_for_each(rdev, rtmp, mddev) if (test_and_clear_bit(StateChanged, &rdev->flags)) - sysfs_notify(&rdev->kobj, NULL, "state"); + sysfs_notify_dirent(rdev->sysfs_state); if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) && @@ -6221,7 +6232,7 @@ void md_check_recovery(mddev_t *mddev) void md_wait_for_blocked_rdev(mdk_rdev_t *rdev, mddev_t *mddev) { - sysfs_notify(&rdev->kobj, NULL, "state"); + sysfs_notify_dirent(rdev->sysfs_state); wait_event_timeout(rdev->blocked_wait, !test_bit(Blocked, &rdev->flags), msecs_to_jiffies(5000));