mds: wait migrate to finish when linking #51363
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If the inode have 2 hard links and in two different MDSs. If the
local dentry was unlinked and a new link request, which is trying
to link a new dentry to this inode, comes, it will try to trigger
to migrate the local stray denty to the remote MDS.
This will cause deadlock because the link request will authpin
the inode and keep waiting the migrating, which will also try to
autopin the inode too, to finish.
Fixes: https://tracker.ceph.com/issues/59657
Signed-off-by: Xiubo Li xiubli@redhat.com
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