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block: remove the bd_openers checks in blk_drop_partitions
When replacing the bd_super check with a bd_openers I followed a logical conclusion, which turns out to be utterly wrong. When a block device has bd_super sets it has a mount file system on it (although not every mounted file system sets bd_super), but that also implies it doesn't even have partitions to start with. So instead of trying to come up with a logical check for all openers, just remove the check entirely. Fixes:d3ef553627
("block: fix busy device checking in blk_drop_partitions") Fixes:cb6b771b05
("block: fix busy device checking in blk_drop_partitions again") Reported-by: Michal Koutný <mkoutny@suse.com> Reported-by: Yang Xu <xuyang2018.jy@cn.fujitsu.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -496,7 +496,7 @@ int blk_drop_partitions(struct gendisk *disk, struct block_device *bdev)
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if (!disk_part_scan_enabled(disk))
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return 0;
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if (bdev->bd_part_count || bdev->bd_openers > 1)
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if (bdev->bd_part_count)
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return -EBUSY;
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res = invalidate_partition(disk, 0);
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if (res)
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