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

[Al Viro <viro@xxxxxxxxxxxxxxxxxx>]

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?

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