[LTP] [xfs] 73e5fff98b: kmsg.dev/zero:Can't_open_blockdev

[Ian Kent]

On Wed, 2019-11-13 at 09:13 +0800, Ian Kent wrote:
> Adding Al and David to the CC, hopefully that will draw their
> attention to this a bit sooner.
> 
> On Tue, 2019-11-12 at 13:08 +0100, Christoph Hellwig wrote:
> > On Tue, Nov 12, 2019 at 07:02:23AM -0500, Jan Stancek wrote:
> > > https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/fs/fs_fill/fs_fill.c
> > > 
> > > Setup of that test is trying different file system types, and it
> > > looks
> > > at errno code of "mount -t $fs /dev/zero /mnt/$fs".
> > > 
> > > Test still PASSes. This report appears to be only about extra
> > > message in dmesg,
> > > which wasn't there before:
> > > 
> > > # mount -t xfs /dev/zero /mnt/xfs
> 
> Assuming that is what is being done ...

Arrrh, of course, a difference between get_tree_bdev() and
mount_bdev() is that get_tree_bdev() prints this message when
blkdev_get_by_path() fails whereas mount_bdev() doesn't.

Both however do return an error in this case so the behaviour
is the same.

So I'm calling this not a problem with the subject patch.

What needs to be done to resolve this in ltp I don't know?

Ian