From 142fe8f4bb169e8632024d51c64653a8bf140561 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 14 Nov 2019 15:34:35 +0100 Subject: block: fix bdev_disk_changed for non-partitioned devices We still have to set the capacity to 0 if invalidating or call revalidate_disk if not even if the disk has no partitions. Fix that by merging rescan_partitions into bdev_disk_changed and just stubbing out blk_add_partitions and blk_drop_partitions for non-partitioned devices. Signed-off-by: Christoph Hellwig Reviewed-by: Jan Kara Signed-off-by: Jens Axboe --- fs/block_dev.c | 25 +++++++------------------ 1 file changed, 7 insertions(+), 18 deletions(-) (limited to 'fs/block_dev.c') diff --git a/fs/block_dev.c b/fs/block_dev.c index ec10dacd18d0..ae16466a67f7 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1508,9 +1508,9 @@ EXPORT_SYMBOL(bd_set_size); static void __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part); -static int rescan_partitions(struct gendisk *disk, struct block_device *bdev, - bool invalidate) +int bdev_disk_changed(struct block_device *bdev, bool invalidate) { + struct gendisk *disk = bdev->bd_disk; int ret; rescan: @@ -1526,32 +1526,21 @@ rescan: check_disk_size_change(disk, bdev, !invalidate); bdev->bd_invalidated = 0; - if (!get_capacity(disk)) { + if (get_capacity(disk)) { + ret = blk_add_partitions(disk, bdev); + if (ret == -EAGAIN) + goto rescan; + } else { /* * Tell userspace that the media / partition table may have * changed. */ kobject_uevent(&disk_to_dev(disk)->kobj, KOBJ_CHANGE); - return 0; } - ret = blk_add_partitions(disk, bdev); - if (ret == -EAGAIN) - goto rescan; return ret; } - -static void bdev_disk_changed(struct block_device *bdev, bool invalidate) -{ - if (disk_part_scan_enabled(bdev->bd_disk)) { - rescan_partitions(bdev->bd_disk, bdev, invalidate); - } else { - check_disk_size_change(bdev->bd_disk, bdev, !invalidate); - bdev->bd_invalidated = 0; - } -} - /* * bd_mutex locking: * -- cgit