NFSv4.1: Allow parallel OPEN/OPEN_DOWNGRADE/CLOSE

Remove the serialisation of OPEN/OPEN_DOWNGRADE and CLOSE calls for the
case of NFSv4.1 and newer.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index a08178764cf9..e57290a66b76 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -44,6 +44,7 @@ enum nfs4_client_state {
 #define NFS4_RENEW_TIMEOUT              0x01
 #define NFS4_RENEW_DELEGATION_CB        0x02
 
+struct nfs_seqid_counter;
 struct nfs4_minor_version_ops {
         u32     minor_version;
         unsigned init_caps;
@@ -56,6 +57,8 @@ struct nfs4_minor_version_ops {
                         struct nfs_fsinfo *);
         void    (*free_lock_state)(struct nfs_server *,
                         struct nfs4_lock_state *);
+        struct nfs_seqid *
+                (*alloc_seqid)(struct nfs_seqid_counter *, gfp_t);
         const struct rpc_call_ops *call_sync_ops;
         const struct nfs4_state_recovery_ops *reboot_recovery_ops;
         const struct nfs4_state_recovery_ops *nograce_recovery_ops;