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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2014-02-11 00:20:47 +0100 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2014-02-20 03:21:05 +0100 |
| commit | e999e80ee9fc47f1febbec6823deda3537dbbd22 (patch) | |
| tree | e76d471f251cb27d93912ca6192c8dae413f1407 /fs/nfs/nfs4_fs.h | |
| parent | NFSv4.1: Fix wraparound issues in pnfs_seqid_is_newer() (diff) | |
| download | linux-e999e80ee9fc47f1febbec6823deda3537dbbd22.tar.xz linux-e999e80ee9fc47f1febbec6823deda3537dbbd22.zip | |
NFSv4: Don't update the open stateid unless it is newer than the old one
This patch is in preparation for the NFSv4.1 parallel open capability.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/nfs4_fs.h')
| -rw-r--r-- | fs/nfs/nfs4_fs.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index a5b27c2d9689..df81fcc138a7 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -500,6 +500,16 @@ static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_statei return memcmp(dst, src, sizeof(*dst)) == 0; } +static inline bool nfs4_stateid_match_other(const nfs4_stateid *dst, const nfs4_stateid *src) +{ + return memcmp(dst->other, src->other, NFS4_STATEID_OTHER_SIZE) == 0; +} + +static inline bool nfs4_stateid_is_newer(const nfs4_stateid *s1, const nfs4_stateid *s2) +{ + return (s32)(be32_to_cpu(s1->seqid) - be32_to_cpu(s2->seqid)) > 0; +} + static inline bool nfs4_valid_open_stateid(const struct nfs4_state *state) { return test_bit(NFS_STATE_RECOVERY_FAILED, &state->flags) == 0; |