X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=fs%2Fpartitions%2Fcheck.c;h=5dcd4b0c5533346e360f12bc6c62c510a0722d28;hb=5cf8f57d44d16652336fabdd65e727a6e6f98cd5;hp=1e848648a322b158cce120d70c36966349f10cff;hpb=20e5c81fcff89535dced2ed71cf24c6c648ff40e;p=safe%2Fjmp%2Flinux-2.6 diff --git a/fs/partitions/check.c b/fs/partitions/check.c index 1e84864..5dcd4b0 100644 --- a/fs/partitions/check.c +++ b/fs/partitions/check.c @@ -16,12 +16,13 @@ #include #include #include +#include #include #include -#include +#include +#include #include "check.h" -#include "devfs.h" #include "acorn.h" #include "amiga.h" @@ -35,6 +36,8 @@ #include "ibm.h" #include "ultrix.h" #include "efi.h" +#include "karma.h" +#include "sysv68.h" #ifdef CONFIG_BLK_DEV_MD extern void md_autodetect_dev(dev_t dev); @@ -42,7 +45,7 @@ extern void md_autodetect_dev(dev_t dev); int warn_no_part = 1; /*This is ugly: should make genhd removable media aware*/ -static int (*check_part[])(struct parsed_partitions *, struct block_device *) = { +static int (*check_part[])(struct parsed_partitions *) = { /* * Probe partition formats with tables at disk address 0 * that also have an ADFS boot block at 0xdc0. @@ -103,6 +106,12 @@ static int (*check_part[])(struct parsed_partitions *, struct block_device *) = #ifdef CONFIG_IBM_PARTITION ibm_partition, #endif +#ifdef CONFIG_KARMA_PARTITION + karma_partition, +#endif +#ifdef CONFIG_SYSV68_PARTITION + sysv68_partition, +#endif NULL }; @@ -113,22 +122,21 @@ static int (*check_part[])(struct parsed_partitions *, struct block_device *) = * a pointer to that same buffer (for convenience). */ -char *disk_name(struct gendisk *hd, int part, char *buf) +char *disk_name(struct gendisk *hd, int partno, char *buf) { - if (!part) + if (!partno) snprintf(buf, BDEVNAME_SIZE, "%s", hd->disk_name); else if (isdigit(hd->disk_name[strlen(hd->disk_name)-1])) - snprintf(buf, BDEVNAME_SIZE, "%sp%d", hd->disk_name, part); + snprintf(buf, BDEVNAME_SIZE, "%sp%d", hd->disk_name, partno); else - snprintf(buf, BDEVNAME_SIZE, "%s%d", hd->disk_name, part); + snprintf(buf, BDEVNAME_SIZE, "%s%d", hd->disk_name, partno); return buf; } const char *bdevname(struct block_device *bdev, char *buf) { - int part = MINOR(bdev->bd_dev) - bdev->bd_disk->first_minor; - return disk_name(bdev->bd_disk, part, buf); + return disk_name(bdev->bd_disk, bdev->bd_part->partno, buf); } EXPORT_SYMBOL(bdevname); @@ -151,241 +159,519 @@ static struct parsed_partitions * check_partition(struct gendisk *hd, struct block_device *bdev) { struct parsed_partitions *state; - int i, res; + int i, res, err; - state = kmalloc(sizeof(struct parsed_partitions), GFP_KERNEL); + state = kzalloc(sizeof(struct parsed_partitions), GFP_KERNEL); if (!state) return NULL; -#ifdef CONFIG_DEVFS_FS - if (hd->devfs_name[0] != '\0') { - printk(KERN_INFO " /dev/%s:", hd->devfs_name); + state->bdev = bdev; + disk_name(hd, 0, state->name); + printk(KERN_INFO " %s:", state->name); + if (isdigit(state->name[strlen(state->name)-1])) sprintf(state->name, "p"); - } -#endif - else { - disk_name(hd, 0, state->name); - printk(KERN_INFO " %s:", state->name); - if (isdigit(state->name[strlen(state->name)-1])) - sprintf(state->name, "p"); - } - state->limit = hd->minors; - i = res = 0; + + state->limit = disk_max_parts(hd); + i = res = err = 0; while (!res && check_part[i]) { memset(&state->parts, 0, sizeof(state->parts)); - res = check_part[i++](state, bdev); + res = check_part[i++](state); + if (res < 0) { + /* We have hit an I/O error which we don't report now. + * But record it, and let the others do their job. + */ + err = res; + res = 0; + } + } if (res > 0) return state; + if (state->access_beyond_eod) + err = -ENOSPC; + if (err) + /* The partition is unrecognized. So report I/O errors if there were any */ + res = err; if (!res) printk(" unknown partition table\n"); else if (warn_no_part) printk(" unable to read partition table\n"); kfree(state); - return NULL; + return ERR_PTR(res); } -/* - * sysfs bindings for partitions - */ +static ssize_t part_partition_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct hd_struct *p = dev_to_part(dev); -struct part_attribute { - struct attribute attr; - ssize_t (*show)(struct hd_struct *,char *); -}; + return sprintf(buf, "%d\n", p->partno); +} -static ssize_t -part_attr_show(struct kobject * kobj, struct attribute * attr, char * page) +static ssize_t part_start_show(struct device *dev, + struct device_attribute *attr, char *buf) { - struct hd_struct * p = container_of(kobj,struct hd_struct,kobj); - struct part_attribute * part_attr = container_of(attr,struct part_attribute,attr); - ssize_t ret = 0; - if (part_attr->show) - ret = part_attr->show(p,page); - return ret; + struct hd_struct *p = dev_to_part(dev); + + return sprintf(buf, "%llu\n",(unsigned long long)p->start_sect); } -static struct sysfs_ops part_sysfs_ops = { - .show = part_attr_show, -}; +ssize_t part_size_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct hd_struct *p = dev_to_part(dev); + return sprintf(buf, "%llu\n",(unsigned long long)p->nr_sects); +} -static ssize_t part_dev_read(struct hd_struct * p, char *page) +ssize_t part_alignment_offset_show(struct device *dev, + struct device_attribute *attr, char *buf) { - struct gendisk *disk = container_of(p->kobj.parent,struct gendisk,kobj); - dev_t dev = MKDEV(disk->major, disk->first_minor + p->partno); - return print_dev_t(page, dev); + struct hd_struct *p = dev_to_part(dev); + return sprintf(buf, "%llu\n", (unsigned long long)p->alignment_offset); } -static ssize_t part_start_read(struct hd_struct * p, char *page) + +ssize_t part_discard_alignment_show(struct device *dev, + struct device_attribute *attr, char *buf) { - return sprintf(page, "%llu\n",(unsigned long long)p->start_sect); + struct hd_struct *p = dev_to_part(dev); + return sprintf(buf, "%u\n", p->discard_alignment); } -static ssize_t part_size_read(struct hd_struct * p, char *page) + +ssize_t part_stat_show(struct device *dev, + struct device_attribute *attr, char *buf) { - return sprintf(page, "%llu\n",(unsigned long long)p->nr_sects); + struct hd_struct *p = dev_to_part(dev); + int cpu; + + cpu = part_stat_lock(); + part_round_stats(cpu, p); + part_stat_unlock(); + return sprintf(buf, + "%8lu %8lu %8llu %8u " + "%8lu %8lu %8llu %8u " + "%8u %8u %8u" + "\n", + part_stat_read(p, ios[READ]), + part_stat_read(p, merges[READ]), + (unsigned long long)part_stat_read(p, sectors[READ]), + jiffies_to_msecs(part_stat_read(p, ticks[READ])), + part_stat_read(p, ios[WRITE]), + part_stat_read(p, merges[WRITE]), + (unsigned long long)part_stat_read(p, sectors[WRITE]), + jiffies_to_msecs(part_stat_read(p, ticks[WRITE])), + part_in_flight(p), + jiffies_to_msecs(part_stat_read(p, io_ticks)), + jiffies_to_msecs(part_stat_read(p, time_in_queue))); } -static ssize_t part_stat_read(struct hd_struct * p, char *page) + +ssize_t part_inflight_show(struct device *dev, + struct device_attribute *attr, char *buf) { - return sprintf(page, "%8u %8llu %8u %8llu\n", - p->reads, (unsigned long long)p->read_sectors, - p->writes, (unsigned long long)p->write_sectors); + struct hd_struct *p = dev_to_part(dev); + + return sprintf(buf, "%8u %8u\n", p->in_flight[0], p->in_flight[1]); } -static struct part_attribute part_attr_dev = { - .attr = {.name = "dev", .mode = S_IRUGO }, - .show = part_dev_read -}; -static struct part_attribute part_attr_start = { - .attr = {.name = "start", .mode = S_IRUGO }, - .show = part_start_read -}; -static struct part_attribute part_attr_size = { - .attr = {.name = "size", .mode = S_IRUGO }, - .show = part_size_read -}; -static struct part_attribute part_attr_stat = { - .attr = {.name = "stat", .mode = S_IRUGO }, - .show = part_stat_read + +#ifdef CONFIG_FAIL_MAKE_REQUEST +ssize_t part_fail_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct hd_struct *p = dev_to_part(dev); + + return sprintf(buf, "%d\n", p->make_it_fail); +} + +ssize_t part_fail_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct hd_struct *p = dev_to_part(dev); + int i; + + if (count > 0 && sscanf(buf, "%d", &i) > 0) + p->make_it_fail = (i == 0) ? 0 : 1; + + return count; +} +#endif + +static DEVICE_ATTR(partition, S_IRUGO, part_partition_show, NULL); +static DEVICE_ATTR(start, S_IRUGO, part_start_show, NULL); +static DEVICE_ATTR(size, S_IRUGO, part_size_show, NULL); +static DEVICE_ATTR(alignment_offset, S_IRUGO, part_alignment_offset_show, NULL); +static DEVICE_ATTR(discard_alignment, S_IRUGO, part_discard_alignment_show, + NULL); +static DEVICE_ATTR(stat, S_IRUGO, part_stat_show, NULL); +static DEVICE_ATTR(inflight, S_IRUGO, part_inflight_show, NULL); +#ifdef CONFIG_FAIL_MAKE_REQUEST +static struct device_attribute dev_attr_fail = + __ATTR(make-it-fail, S_IRUGO|S_IWUSR, part_fail_show, part_fail_store); +#endif + +static struct attribute *part_attrs[] = { + &dev_attr_partition.attr, + &dev_attr_start.attr, + &dev_attr_size.attr, + &dev_attr_alignment_offset.attr, + &dev_attr_discard_alignment.attr, + &dev_attr_stat.attr, + &dev_attr_inflight.attr, +#ifdef CONFIG_FAIL_MAKE_REQUEST + &dev_attr_fail.attr, +#endif + NULL }; -static struct attribute * default_attrs[] = { - &part_attr_dev.attr, - &part_attr_start.attr, - &part_attr_size.attr, - &part_attr_stat.attr, - NULL, +static struct attribute_group part_attr_group = { + .attrs = part_attrs, }; -extern struct subsystem block_subsys; +static const struct attribute_group *part_attr_groups[] = { + &part_attr_group, +#ifdef CONFIG_BLK_DEV_IO_TRACE + &blk_trace_attr_group, +#endif + NULL +}; -static void part_release(struct kobject *kobj) +static void part_release(struct device *dev) { - struct hd_struct * p = container_of(kobj,struct hd_struct,kobj); + struct hd_struct *p = dev_to_part(dev); + free_part_stats(p); kfree(p); } -struct kobj_type ktype_part = { +struct device_type part_type = { + .name = "partition", + .groups = part_attr_groups, .release = part_release, - .default_attrs = default_attrs, - .sysfs_ops = &part_sysfs_ops, }; -void delete_partition(struct gendisk *disk, int part) +static void delete_partition_rcu_cb(struct rcu_head *head) { - struct hd_struct *p = disk->part[part-1]; - if (!p) + struct hd_struct *part = container_of(head, struct hd_struct, rcu_head); + + part->start_sect = 0; + part->nr_sects = 0; + part_stat_set_all(part, 0); + put_device(part_to_dev(part)); +} + +void delete_partition(struct gendisk *disk, int partno) +{ + struct disk_part_tbl *ptbl = disk->part_tbl; + struct hd_struct *part; + + if (partno >= ptbl->len) return; - if (!p->nr_sects) + + part = ptbl->part[partno]; + if (!part) return; - disk->part[part-1] = NULL; - p->start_sect = 0; - p->nr_sects = 0; - p->reads = p->writes = p->read_sectors = p->write_sectors = 0; - devfs_remove("%s/part%d", disk->devfs_name, part); - kobject_unregister(&p->kobj); + + blk_free_devt(part_devt(part)); + rcu_assign_pointer(ptbl->part[partno], NULL); + rcu_assign_pointer(ptbl->last_lookup, NULL); + kobject_put(part->holder_dir); + device_del(part_to_dev(part)); + + call_rcu(&part->rcu_head, delete_partition_rcu_cb); +} + +static ssize_t whole_disk_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return 0; } +static DEVICE_ATTR(whole_disk, S_IRUSR | S_IRGRP | S_IROTH, + whole_disk_show, NULL); -void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len) +struct hd_struct *add_partition(struct gendisk *disk, int partno, + sector_t start, sector_t len, int flags) { struct hd_struct *p; + dev_t devt = MKDEV(0, 0); + struct device *ddev = disk_to_dev(disk); + struct device *pdev; + struct disk_part_tbl *ptbl; + const char *dname; + int err; + + err = disk_expand_part_tbl(disk, partno); + if (err) + return ERR_PTR(err); + ptbl = disk->part_tbl; + + if (ptbl->part[partno]) + return ERR_PTR(-EBUSY); - p = kmalloc(sizeof(*p), GFP_KERNEL); + p = kzalloc(sizeof(*p), GFP_KERNEL); if (!p) - return; - - memset(p, 0, sizeof(*p)); + return ERR_PTR(-EBUSY); + + if (!init_part_stats(p)) { + err = -ENOMEM; + goto out_free; + } + pdev = part_to_dev(p); + p->start_sect = start; + p->alignment_offset = + queue_limit_alignment_offset(&disk->queue->limits, start); + p->discard_alignment = + queue_limit_discard_alignment(&disk->queue->limits, start); p->nr_sects = len; - p->partno = part; - - devfs_mk_bdev(MKDEV(disk->major, disk->first_minor + part), - S_IFBLK|S_IRUSR|S_IWUSR, - "%s/part%d", disk->devfs_name, part); + p->partno = partno; + p->policy = get_disk_ro(disk); - if (isdigit(disk->kobj.name[strlen(disk->kobj.name)-1])) - snprintf(p->kobj.name,KOBJ_NAME_LEN,"%sp%d",disk->kobj.name,part); + dname = dev_name(ddev); + if (isdigit(dname[strlen(dname) - 1])) + dev_set_name(pdev, "%sp%d", dname, partno); else - snprintf(p->kobj.name,KOBJ_NAME_LEN,"%s%d",disk->kobj.name,part); - p->kobj.parent = &disk->kobj; - p->kobj.ktype = &ktype_part; - kobject_register(&p->kobj); - disk->part[part-1] = p; -} - -static void disk_sysfs_symlinks(struct gendisk *disk) -{ - struct device *target = get_device(disk->driverfs_dev); - if (target) { - sysfs_create_link(&disk->kobj,&target->kobj,"device"); - sysfs_create_link(&target->kobj,&disk->kobj,"block"); + dev_set_name(pdev, "%s%d", dname, partno); + + device_initialize(pdev); + pdev->class = &block_class; + pdev->type = &part_type; + pdev->parent = ddev; + + err = blk_alloc_devt(p, &devt); + if (err) + goto out_free_stats; + pdev->devt = devt; + + /* delay uevent until 'holders' subdir is created */ + dev_set_uevent_suppress(pdev, 1); + err = device_add(pdev); + if (err) + goto out_put; + + err = -ENOMEM; + p->holder_dir = kobject_create_and_add("holders", &pdev->kobj); + if (!p->holder_dir) + goto out_del; + + dev_set_uevent_suppress(pdev, 0); + if (flags & ADDPART_FLAG_WHOLEDISK) { + err = device_create_file(pdev, &dev_attr_whole_disk); + if (err) + goto out_del; } + + /* everything is up and running, commence */ + INIT_RCU_HEAD(&p->rcu_head); + rcu_assign_pointer(ptbl->part[partno], p); + + /* suppress uevent if the disk supresses it */ + if (!dev_get_uevent_suppress(ddev)) + kobject_uevent(&pdev->kobj, KOBJ_ADD); + + return p; + +out_free_stats: + free_part_stats(p); +out_free: + kfree(p); + return ERR_PTR(err); +out_del: + kobject_put(p->holder_dir); + device_del(pdev); +out_put: + put_device(pdev); + blk_free_devt(devt); + return ERR_PTR(err); } /* Not exported, helper to add_disk(). */ void register_disk(struct gendisk *disk) { + struct device *ddev = disk_to_dev(disk); struct block_device *bdev; - char *s; + struct disk_part_iter piter; + struct hd_struct *part; int err; - strlcpy(disk->kobj.name,disk->disk_name,KOBJ_NAME_LEN); - /* ewww... some of these buggers have / in name... */ - s = strchr(disk->kobj.name, '/'); - if (s) - *s = '!'; - if ((err = kobject_add(&disk->kobj))) - return; - disk_sysfs_symlinks(disk); - kobject_hotplug(&disk->kobj, KOBJ_ADD); + ddev->parent = disk->driverfs_dev; - /* No minors to use for partitions */ - if (disk->minors == 1) { - if (disk->devfs_name[0] != '\0') - devfs_add_disk(disk); + dev_set_name(ddev, disk->disk_name); + + /* delay uevents, until we scanned partition table */ + dev_set_uevent_suppress(ddev, 1); + + if (device_add(ddev)) + return; +#ifndef CONFIG_SYSFS_DEPRECATED + err = sysfs_create_link(block_depr, &ddev->kobj, + kobject_name(&ddev->kobj)); + if (err) { + device_del(ddev); return; } +#endif + disk->part0.holder_dir = kobject_create_and_add("holders", &ddev->kobj); + disk->slave_dir = kobject_create_and_add("slaves", &ddev->kobj); - /* always add handle for the whole disk */ - devfs_add_partitioned(disk); + /* No minors to use for partitions */ + if (!disk_partitionable(disk)) + goto exit; /* No such device (e.g., media were just removed) */ if (!get_capacity(disk)) - return; + goto exit; bdev = bdget_disk(disk, 0); if (!bdev) - return; + goto exit; bdev->bd_invalidated = 1; - if (blkdev_get(bdev, FMODE_READ, 0) < 0) - return; - blkdev_put(bdev); + err = blkdev_get(bdev, FMODE_READ); + if (err < 0) + goto exit; + blkdev_put(bdev, FMODE_READ); + +exit: + /* announce disk after possible partitions are created */ + dev_set_uevent_suppress(ddev, 0); + kobject_uevent(&ddev->kobj, KOBJ_ADD); + + /* announce possible partitions */ + disk_part_iter_init(&piter, disk, 0); + while ((part = disk_part_iter_next(&piter))) + kobject_uevent(&part_to_dev(part)->kobj, KOBJ_ADD); + disk_part_iter_exit(&piter); +} + +static bool disk_unlock_native_capacity(struct gendisk *disk) +{ + const struct block_device_operations *bdops = disk->fops; + + if (bdops->unlock_native_capacity && + !(disk->flags & GENHD_FL_NATIVE_CAPACITY)) { + printk(KERN_CONT "enabling native capacity\n"); + bdops->unlock_native_capacity(disk); + disk->flags |= GENHD_FL_NATIVE_CAPACITY; + return true; + } else { + printk(KERN_CONT "truncated\n"); + return false; + } } int rescan_partitions(struct gendisk *disk, struct block_device *bdev) { - struct parsed_partitions *state; - int p, res; + struct parsed_partitions *state = NULL; + struct disk_part_iter piter; + struct hd_struct *part; + int p, highest, res; +rescan: + if (state && !IS_ERR(state)) { + kfree(state); + state = NULL; + } if (bdev->bd_part_count) return -EBUSY; res = invalidate_partition(disk, 0); if (res) return res; - bdev->bd_invalidated = 0; - for (p = 1; p < disk->minors; p++) - delete_partition(disk, p); + + disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY); + while ((part = disk_part_iter_next(&piter))) + delete_partition(disk, part->partno); + disk_part_iter_exit(&piter); + if (disk->fops->revalidate_disk) disk->fops->revalidate_disk(disk); + check_disk_size_change(disk, bdev); + bdev->bd_invalidated = 0; if (!get_capacity(disk) || !(state = check_partition(disk, bdev))) return 0; + if (IS_ERR(state)) { + /* + * I/O error reading the partition table. If any + * partition code tried to read beyond EOD, retry + * after unlocking native capacity. + */ + if (PTR_ERR(state) == -ENOSPC) { + printk(KERN_WARNING "%s: partition table beyond EOD, ", + disk->disk_name); + if (disk_unlock_native_capacity(disk)) + goto rescan; + } + return -EIO; + } + /* + * If any partition code tried to read beyond EOD, try + * unlocking native capacity even if partition table is + * sucessfully read as we could be missing some partitions. + */ + if (state->access_beyond_eod) { + printk(KERN_WARNING + "%s: partition table partially beyond EOD, ", + disk->disk_name); + if (disk_unlock_native_capacity(disk)) + goto rescan; + } + + /* tell userspace that the media / partition table may have changed */ + kobject_uevent(&disk_to_dev(disk)->kobj, KOBJ_CHANGE); + + /* Detect the highest partition number and preallocate + * disk->part_tbl. This is an optimization and not strictly + * necessary. + */ + for (p = 1, highest = 0; p < state->limit; p++) + if (state->parts[p].size) + highest = p; + + disk_expand_part_tbl(disk, highest); + + /* add partitions */ for (p = 1; p < state->limit; p++) { - sector_t size = state->parts[p].size; - sector_t from = state->parts[p].from; + sector_t size, from; + + size = state->parts[p].size; if (!size) continue; - add_partition(disk, p, from, size); + + from = state->parts[p].from; + if (from >= get_capacity(disk)) { + printk(KERN_WARNING + "%s: p%d start %llu is beyond EOD, ", + disk->disk_name, p, (unsigned long long) from); + if (disk_unlock_native_capacity(disk)) + goto rescan; + continue; + } + + if (from + size > get_capacity(disk)) { + printk(KERN_WARNING + "%s: p%d size %llu extends beyond EOD, ", + disk->disk_name, p, (unsigned long long) size); + + if (disk_unlock_native_capacity(disk)) { + /* free state and restart */ + goto rescan; + } else { + /* + * we can not ignore partitions of broken tables + * created by for example camera firmware, but + * we limit them to the end of the disk to avoid + * creating invalid block devices + */ + size = get_capacity(disk) - from; + } + } + part = add_partition(disk, p, from, size, + state->parts[p].flags); + if (IS_ERR(part)) { + printk(KERN_ERR " %s: p%d could not be added: %ld\n", + disk->disk_name, p, -PTR_ERR(part)); + continue; + } #ifdef CONFIG_BLK_DEV_MD - if (state->parts[p].flags) - md_autodetect_dev(bdev->bd_dev+p); + if (state->parts[p].flags & ADDPART_FLAG_RAID) + md_autodetect_dev(part_to_dev(part)->devt); #endif } kfree(state); @@ -397,12 +683,9 @@ unsigned char *read_dev_sector(struct block_device *bdev, sector_t n, Sector *p) struct address_space *mapping = bdev->bd_inode->i_mapping; struct page *page; - page = read_cache_page(mapping, (pgoff_t)(n >> (PAGE_CACHE_SHIFT-9)), - (filler_t *)mapping->a_ops->readpage, NULL); + page = read_mapping_page(mapping, (pgoff_t)(n >> (PAGE_CACHE_SHIFT-9)), + NULL); if (!IS_ERR(page)) { - wait_on_page_locked(page); - if (!PageUptodate(page)) - goto fail; if (PageError(page)) goto fail; p->v = page; @@ -418,27 +701,31 @@ EXPORT_SYMBOL(read_dev_sector); void del_gendisk(struct gendisk *disk) { - int p; + struct disk_part_iter piter; + struct hd_struct *part; /* invalidate stuff */ - for (p = disk->minors - 1; p > 0; p--) { - invalidate_partition(disk, p); - delete_partition(disk, p); + disk_part_iter_init(&piter, disk, + DISK_PITER_INCL_EMPTY | DISK_PITER_REVERSE); + while ((part = disk_part_iter_next(&piter))) { + invalidate_partition(disk, part->partno); + delete_partition(disk, part->partno); } + disk_part_iter_exit(&piter); + invalidate_partition(disk, 0); - disk->capacity = 0; + blk_free_devt(disk_to_dev(disk)->devt); + set_capacity(disk, 0); disk->flags &= ~GENHD_FL_UP; unlink_gendisk(disk); - disk_stat_set_all(disk, 0); - disk->stamp = 0; - - devfs_remove_disk(disk); - - if (disk->driverfs_dev) { - sysfs_remove_link(&disk->kobj, "device"); - sysfs_remove_link(&disk->driverfs_dev->kobj, "block"); - put_device(disk->driverfs_dev); - } - kobject_hotplug(&disk->kobj, KOBJ_REMOVE); - kobject_del(&disk->kobj); + part_stat_set_all(&disk->part0, 0); + disk->part0.stamp = 0; + + kobject_put(disk->part0.holder_dir); + kobject_put(disk->slave_dir); + disk->driverfs_dev = NULL; +#ifndef CONFIG_SYSFS_DEPRECATED + sysfs_remove_link(block_depr, dev_name(disk_to_dev(disk))); +#endif + device_del(disk_to_dev(disk)); }