Commit d3ef5536 authored Apr 04, 2020 by Christoph Hellwig Committed by Jens Axboe Apr 07, 2020

block: fix busy device checking in blk_drop_partitions



bd_super is only set by get_tree_bdev and mount_bdev, and thus not by
other openers like btrfs or the XFS realtime and log devices, as well as
block devices directly opened from user space.  Check bd_openers
instead.

Fixes: 77032ca6 ("Return EBUSY from BLKRRPART for mounted whole-dev fs")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent 536167d4

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

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