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| author | Trond Myklebust <trondmy@gmail.com> | 2019-09-20 07:23:44 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2019-09-20 15:44:45 -0400 |
| commit | 922839570920c024baf740ef45dfa98009f0192e (patch) | |
| tree | f77cbcca0b1d3379af7c5162383cc3ed7f7e75c7 /fs/nfs | |
| parent | 6109bcf7130126d24a9ec9d881c665d5d9ab0eb4 (diff) | |
| download | linux-922839570920c024baf740ef45dfa98009f0192e.tar.gz linux-922839570920c024baf740ef45dfa98009f0192e.tar.bz2 linux-922839570920c024baf740ef45dfa98009f0192e.zip | |
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>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/nfs4_fs.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 3564da1ba8a1..e8f74ed98e42 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -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; |