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| author |   Ricardo Labiaga <Ricardo.Labiaga@netapp.com> | 2010-10-12 16:30:06 -0700 |
|---|---|---|
| committer |   Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-10-24 18:00:04 -0400 |
| commit | 55b6e7742d5b25182edf410369379b9727b2e5bc (patch) | |
| tree | 7dbe87bdf772c4ec1896a8620c97b536cbcf73c6 /fs/nfs/nfs4xdr.c | |
| parent | Revalidate caches on lock (diff) | |
| download | linux-dev-55b6e7742d5b25182edf410369379b9727b2e5bc.tar.xz linux-dev-55b6e7742d5b25182edf410369379b9727b2e5bc.zip | |
Ask for time_delta during fsinfo probe
Used by the client to determine if the server has a granular enough
time stamp.
Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4xdr.c')
| -rw-r--r-- | fs/nfs/nfs4xdr.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 1e5d68e36e07..7131c761d85c 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -3582,6 +3582,24 @@ static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, s return status; } +static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap, + struct timespec *time) +{ + int status = 0; + + time->tv_sec = 0; + time->tv_nsec = 0; + if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U))) + return -EIO; + if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) { + status = decode_attr_time(xdr, time); + bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA; + } + dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec, + (long)time->tv_nsec); + return status; +} + static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) { int status = 0; @@ -3982,6 +4000,9 @@ static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) goto xdr_error; fsinfo->wtpref = fsinfo->wtmax; + status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta); + if (status != 0) + goto xdr_error; status = verify_attr_len(xdr, savep, attrlen); xdr_error: |