Re: nfs+ext4,can not umount the ext4 mountpoint

[Gu Zheng <guzheng1@huawei.com>]

to J. Bruce Fields:
thanks for your supports.
to Kinglong Mee:
I warried about how to modify for supporting the expected unmount.
It is helpful to me after i saw the patchs,but it felt a little unreasonably in bellow scene:
if a filesystem is exported and i am in the mounted directory on client,the fs also can be umounted on server.


best wishes!


在 2017/5/17 23:46, J. Bruce Fields 写道:
> On Wed, May 17, 2017 at 03:18:38PM +0800, Gu Zheng wrote:
>> and now we do not set the crossmnt ,so that we saw is the underlying directory .
>> the nfs mount have no relation to ext4 mountpoint, it can be umounted maybe better.
>>
>> can we add some limits to let it do not enter the nfsd_cross_mnt() in nfsd_lookup_dentry()if the crossmnt is not set?
>
> If the problem is inability to unmount a filesystem that isn't actually
> even exported, then it *might* be addressed by Kinglong Mee's patches:
>
> 	http://lkml.kernel.org/r/55ED9899.9010401@gmail.com
>
> I'm not sure what those patches still need--they may just be waiting for
> my review.
>
> --b
>
> .
>