diff options
| -rw-r--r-- | block/partitions/core.c | 55 | ||||
| -rw-r--r-- | fs/block_dev.c | 53 | ||||
| -rw-r--r-- | include/linux/genhd.h | 1 |
3 files changed, 54 insertions, 55 deletions
diff --git a/block/partitions/core.c b/block/partitions/core.c index 186d4fbd9f09..b79785f7027c 100644 --- a/block/partitions/core.c +++ b/block/partitions/core.c @@ -596,7 +596,7 @@ static bool blk_add_partition(struct gendisk *disk, struct block_device *bdev, return true; } -int blk_add_partitions(struct gendisk *disk, struct block_device *bdev) +static int blk_add_partitions(struct gendisk *disk, struct block_device *bdev) { struct parsed_partitions *state; int ret = -EAGAIN, p; @@ -657,6 +657,59 @@ out_free_state: return ret; } +int bdev_disk_changed(struct block_device *bdev, bool invalidate) +{ + struct gendisk *disk = bdev->bd_disk; + int ret = 0; + + lockdep_assert_held(&disk->open_mutex); + + if (!(disk->flags & GENHD_FL_UP)) + return -ENXIO; + +rescan: + if (disk->open_partitions) + return -EBUSY; + sync_blockdev(bdev); + invalidate_bdev(bdev); + blk_drop_partitions(disk); + + clear_bit(GD_NEED_PART_SCAN, &disk->state); + + /* + * Historically we only set the capacity to zero for devices that + * support partitions (independ of actually having partitions created). + * Doing that is rather inconsistent, but changing it broke legacy + * udisks polling for legacy ide-cdrom devices. Use the crude check + * below to get the sane behavior for most device while not breaking + * userspace for this particular setup. + */ + if (invalidate) { + if (disk_part_scan_enabled(disk) || + !(disk->flags & GENHD_FL_REMOVABLE)) + set_capacity(disk, 0); + } + + if (get_capacity(disk)) { + ret = blk_add_partitions(disk, bdev); + if (ret == -EAGAIN) + goto rescan; + } else if (invalidate) { + /* + * Tell userspace that the media / partition table may have + * changed. + */ + kobject_uevent(&disk_to_dev(disk)->kobj, KOBJ_CHANGE); + } + + return ret; +} +/* + * Only exported for loop and dasd for historic reasons. Don't use in new + * code! + */ +EXPORT_SYMBOL_GPL(bdev_disk_changed); + void *read_part_sector(struct parsed_partitions *state, sector_t n, Sector *p) { struct address_space *mapping = state->bdev->bd_inode->i_mapping; diff --git a/fs/block_dev.c b/fs/block_dev.c index ac9b3c158a77..5b3a73ecb696 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1242,59 +1242,6 @@ static void blkdev_flush_mapping(struct block_device *bdev) bdev_write_inode(bdev); } -int bdev_disk_changed(struct block_device *bdev, bool invalidate) -{ - struct gendisk *disk = bdev->bd_disk; - int ret = 0; - - lockdep_assert_held(&disk->open_mutex); - - if (!(disk->flags & GENHD_FL_UP)) - return -ENXIO; - -rescan: - if (disk->open_partitions) - return -EBUSY; - sync_blockdev(bdev); - invalidate_bdev(bdev); - blk_drop_partitions(disk); - - clear_bit(GD_NEED_PART_SCAN, &disk->state); - - /* - * Historically we only set the capacity to zero for devices that - * support partitions (independ of actually having partitions created). - * Doing that is rather inconsistent, but changing it broke legacy - * udisks polling for legacy ide-cdrom devices. Use the crude check - * below to get the sane behavior for most device while not breaking - * userspace for this particular setup. - */ - if (invalidate) { - if (disk_part_scan_enabled(disk) || - !(disk->flags & GENHD_FL_REMOVABLE)) - set_capacity(disk, 0); - } - - if (get_capacity(disk)) { - ret = blk_add_partitions(disk, bdev); - if (ret == -EAGAIN) - goto rescan; - } else if (invalidate) { - /* - * Tell userspace that the media / partition table may have - * changed. - */ - kobject_uevent(&disk_to_dev(disk)->kobj, KOBJ_CHANGE); - } - - return ret; -} -/* - * Only exported for loop and dasd for historic reasons. Don't use in new - * code! - */ -EXPORT_SYMBOL_GPL(bdev_disk_changed); - static int blkdev_get_whole(struct block_device *bdev, fmode_t mode) { struct gendisk *disk = bdev->bd_disk; diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 03d684f0498f..f5f0c9bdf1d2 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -257,7 +257,6 @@ static inline sector_t get_capacity(struct gendisk *disk) } int bdev_disk_changed(struct block_device *bdev, bool invalidate); -int blk_add_partitions(struct gendisk *disk, struct block_device *bdev); void blk_drop_partitions(struct gendisk *disk); extern struct gendisk *__alloc_disk_node(int minors, int node_id); |