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| author | Trond Myklebust | 2013-03-17 20:31:15 +0100 |
|---|---|---|
| committer | Trond Myklebust | 2013-03-25 17:04:11 +0100 |
| commit | 3b66486c4c7136f8d4bbe1306d581fadc6bce4c7 (patch) | |
| tree | 953049d16122695bab4388ae86394bb2d09bb236 | |
| parent | NFSv4: Prepare for minorversion-specific nfs_server capabilities (diff) | |
| download | kernel-qcow2-linux-3b66486c4c7136f8d4bbe1306d581fadc6bce4c7.tar.gz kernel-qcow2-linux-3b66486c4c7136f8d4bbe1306d581fadc6bce4c7.tar.xz kernel-qcow2-linux-3b66486c4c7136f8d4bbe1306d581fadc6bce4c7.zip | |
NFSv4.1: Select the "most recent locking state" for read/write/setattr stateids
Follow the practice described in section 8.2.2 of RFC5661: When sending a
read/write or setattr stateid, set the seqid field to zero in order to
signal that the NFS server should apply the most recent locking state.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| -rw-r--r-- | fs/nfs/nfs4proc.c | 3 | ||||
| -rw-r--r-- | fs/nfs/nfs4state.c | 2 | ||||
| -rw-r--r-- | include/linux/nfs_fs_sb.h | 1 |
3 files changed, 5 insertions, 1 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 22c80f9ed824..625a729ebcca 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -6841,7 +6841,8 @@ static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { .init_caps = NFS_CAP_READDIRPLUS | NFS_CAP_ATOMIC_OPEN | NFS_CAP_CHANGE_ATTR - | NFS_CAP_POSIX_LOCK, + | NFS_CAP_POSIX_LOCK + | NFS_CAP_STATEID_NFSV41, .call_sync = nfs4_call_sync_sequence, .match_stateid = nfs41_match_stateid, .find_root_sec = nfs41_find_root_sec, diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 4e95bd72f480..685b1e953ed8 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1053,6 +1053,8 @@ int nfs4_select_rw_stateid(nfs4_stateid *dst, struct nfs4_state *state, goto out; ret = nfs4_copy_open_stateid(dst, state); out: + if (nfs_server_capable(state->inode, NFS_CAP_STATEID_NFSV41)) + dst->seqid = 0; return ret; } diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 6c6ed153a9b4..74c9e52c9338 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -197,5 +197,6 @@ struct nfs_server { #define NFS_CAP_MTIME (1U << 13) #define NFS_CAP_POSIX_LOCK (1U << 14) #define NFS_CAP_UIDGID_NOMAP (1U << 15) +#define NFS_CAP_STATEID_NFSV41 (1U << 16) #endif |