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Commit 92283957 authored by Trond Myklebust's avatar Trond Myklebust Committed by Anna Schumaker
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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: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent 6109bcf7

fs/nfs/nfs4_fs.h

+9 −0
Original line number Diff line number Diff line
@@ -574,6 +574,15 @@ static inline bool nfs4_stateid_is_newer(const nfs4_stateid *s1, const nfs4_stat 
	return (s32)(be32_to_cpu(s1->seqid) - be32_to_cpu(s2->seqid)) > 0;

}



static inline void nfs4_stateid_seqid_inc(nfs4_stateid *s1)

{

	u32 seqid = be32_to_cpu(s1->seqid);



	if (++seqid == 0)

		++seqid;

	s1->seqid = cpu_to_be32(seqid);

}



static inline bool nfs4_valid_open_stateid(const struct nfs4_state *state)

{

	return test_bit(NFS_STATE_RECOVERY_FAILED, &state->flags) == 0;