vfs: plug a conditional assigment of lo_name in getnewvnode
It only matters for witness. No functional changes.
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@ -1669,11 +1669,15 @@ getnewvnode(const char *tag, struct mount *mp, struct vop_vector *vops,
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* that we can compare pointers rather than doing a strcmp().
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*/
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lo = &vp->v_vnlock->lock_object;
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#ifdef WITNESS
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if (lo->lo_name != tag) {
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#endif
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lo->lo_name = tag;
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#ifdef WITNESS
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WITNESS_DESTROY(lo);
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WITNESS_INIT(lo, tag);
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}
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#endif
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/*
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* By default, don't allow shared locks unless filesystems opt-in.
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*/
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