NFSv4: Add a helper to increment stateid seqids
Add a helper function to increment stateid seqids according to the rules specified in RFC5661 Section 8.2.2. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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@ -574,6 +574,15 @@ static inline bool nfs4_stateid_is_newer(const nfs4_stateid *s1, const nfs4_stat
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return (s32)(be32_to_cpu(s1->seqid) - be32_to_cpu(s2->seqid)) > 0;
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}
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static inline void nfs4_stateid_seqid_inc(nfs4_stateid *s1)
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{
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u32 seqid = be32_to_cpu(s1->seqid);
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if (++seqid == 0)
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++seqid;
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s1->seqid = cpu_to_be32(seqid);
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}
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static inline bool nfs4_valid_open_stateid(const struct nfs4_state *state)
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{
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return test_bit(NFS_STATE_RECOVERY_FAILED, &state->flags) == 0;
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