From: Christoph Hellwig hch@lst.de
[ Upstream commit 88ce2a530cc9865a894454b2e40eba5957a60e1a ]
mdadm relies on the fact that deleting an invalid partition returns -ENXIO or -ENOTTY to detect if a block device is a partition or a whole device.
Fixes: 08fc1ab6d748 ("block: fix locking in bdev_del_partition") Reported-by: kernel test robot rong.a.chen@intel.com Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org --- block/partitions/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/partitions/core.c b/block/partitions/core.c index 534e11285a8d4..b45539764c994 100644 --- a/block/partitions/core.c +++ b/block/partitions/core.c @@ -529,7 +529,7 @@ int bdev_del_partition(struct block_device *bdev, int partno)
bdevp = bdget_disk(bdev->bd_disk, partno); if (!bdevp) - return -ENOMEM; + return -ENXIO;
mutex_lock(&bdevp->bd_mutex); mutex_lock_nested(&bdev->bd_mutex, 1);