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Re: [Xen-devel] "don't bugger nd->seq" seems to break umount sometimes



On 2015/4/29 20:21, Al Viro wrote:
> On Wed, Apr 29, 2015 at 12:45:45PM +0100, Ian Jackson wrote:
> 
>> The symptoms are that `umount' fails with EBUSY,
> 
>     [lizf: Backported to 3.4:
>      - remove the changes to follow_link() as it doesn't call set_root()]
> 
> looks dubious - I don't have -stable in front of me, but set_root() in
> follow_link() had migrated from __vfs_follow_link(), so could you try
> (tr '#' '\t' | ed fs/namei.c) <<'EOF'
> /__vfs_follow_link/
> /set_root/s/^/#/
> i
> ##if (!nd->root.mnt)
> .
> wq
> EOF
> and see if it helps?
> .
> 

My fault. I just checked 3.2.y, and it made the right change.


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