Commit cb6b771b authored Apr 10, 2020 by Christoph Hellwig Committed by Jens Axboe Apr 10, 2020

block: fix busy device checking in blk_drop_partitions again



The previous fix had an off by one in the bd_openers checking, counting
the callers blkdev_get.

Fixes: d3ef5536 ("block: fix busy device checking in blk_drop_partitions")
Reported-by: Qian Cai <cai@lca.pw>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Qian Cai <cai@lca.pw>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent d9a9755a

block/partitions/core.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -496,7 +496,7 @@ int blk_drop_partitions(struct gendisk disk, struct block_device bdev)

		if (!disk_part_scan_enabled(disk))
		return 0;
		if (bdev->bd_part_count \|\| bdev->bd_openers)
		if (bdev->bd_part_count \|\| bdev->bd_openers > 1)
		return -EBUSY;
		res = invalidate_partition(disk, 0);
		if (res)

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