NFSv4: Simplify the NFSv4 REMOVE, LINK and RENAME compounds

Get rid of the post-op GETATTR on the directory in order to reduce
the amount of processing done on the server.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 619bc1e..c746b0c 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2775,7 +2775,6 @@ static int _nfs4_proc_remove(struct inode *dir, struct qstr *name)
                .fh = NFS_FH(dir),
                .name.len = name->len,
                .name.name = name->name,
-               .bitmask = server->attr_bitmask,
        };
        struct nfs_removeres res = {
                .server = server,
@@ -2785,19 +2784,11 @@ static int _nfs4_proc_remove(struct inode *dir, struct qstr *name)
                .rpc_argp = &args,
                .rpc_resp = &res,
        };
-       int status = -ENOMEM;
-
-       res.dir_attr = nfs_alloc_fattr();
-       if (res.dir_attr == NULL)
-               goto out;
+       int status;
 
        status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1);
-       if (status == 0) {
+       if (status == 0)
                update_changeattr(dir, &res.cinfo);
-               nfs_post_op_update_inode(dir, res.dir_attr);
-       }
-       nfs_free_fattr(res.dir_attr);
-out:
        return status;
 }
 
@@ -2819,7 +2810,6 @@ static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
        struct nfs_removeargs *args = msg->rpc_argp;
        struct nfs_removeres *res = msg->rpc_resp;
 
-       args->bitmask = server->cache_consistency_bitmask;
        res->server = server;
        msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
        nfs41_init_sequence(&args->seq_args, &res->seq_res, 1);
@@ -2844,7 +2834,6 @@ static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
        if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
                return 0;
        update_changeattr(dir, &res->cinfo);
-       nfs_post_op_update_inode(dir, res->dir_attr);
        return 1;
 }
 
@@ -2855,7 +2844,6 @@ static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
        struct nfs_renameres *res = msg->rpc_resp;
 
        msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME];
-       arg->bitmask = server->attr_bitmask;
        res->server = server;
        nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1);
 }
@@ -2881,9 +2869,7 @@ static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
                return 0;
 
        update_changeattr(old_dir, &res->old_cinfo);
-       nfs_post_op_update_inode(old_dir, res->old_fattr);
        update_changeattr(new_dir, &res->new_cinfo);
-       nfs_post_op_update_inode(new_dir, res->new_fattr);
        return 1;
 }
 
@@ -2896,7 +2882,6 @@ static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
                .new_dir = NFS_FH(new_dir),
                .old_name = old_name,
                .new_name = new_name,
-               .bitmask = server->attr_bitmask,
        };
        struct nfs_renameres res = {
                .server = server,
@@ -2908,21 +2893,11 @@ static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
        };
        int status = -ENOMEM;
        
-       res.old_fattr = nfs_alloc_fattr();
-       res.new_fattr = nfs_alloc_fattr();
-       if (res.old_fattr == NULL || res.new_fattr == NULL)
-               goto out;
-
        status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
        if (!status) {
                update_changeattr(old_dir, &res.old_cinfo);
-               nfs_post_op_update_inode(old_dir, res.old_fattr);
                update_changeattr(new_dir, &res.new_cinfo);
-               nfs_post_op_update_inode(new_dir, res.new_fattr);
        }
-out:
-       nfs_free_fattr(res.new_fattr);
-       nfs_free_fattr(res.old_fattr);
        return status;
 }
 
@@ -2960,18 +2935,15 @@ static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *
        int status = -ENOMEM;
 
        res.fattr = nfs_alloc_fattr();
-       res.dir_attr = nfs_alloc_fattr();
-       if (res.fattr == NULL || res.dir_attr == NULL)
+       if (res.fattr == NULL)
                goto out;
 
        status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
        if (!status) {
                update_changeattr(dir, &res.cinfo);
-               nfs_post_op_update_inode(dir, res.dir_attr);
                nfs_post_op_update_inode(inode, res.fattr);
        }
 out:
-       nfs_free_fattr(res.dir_attr);
        nfs_free_fattr(res.fattr);
        return status;
 }

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 1a70097..49483f1 100644 (file)
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -589,38 +589,29 @@ static int nfs4_stat_to_errno(int);
 #define NFS4_enc_remove_sz     (compound_encode_hdr_maxsz + \
                                encode_sequence_maxsz + \
                                encode_putfh_maxsz + \
-                               encode_remove_maxsz + \
-                               encode_getattr_maxsz)
+                               encode_remove_maxsz)
 #define NFS4_dec_remove_sz     (compound_decode_hdr_maxsz + \
                                decode_sequence_maxsz + \
                                decode_putfh_maxsz + \
-                               decode_remove_maxsz + \
-                               decode_getattr_maxsz)
+                               decode_remove_maxsz)
 #define NFS4_enc_rename_sz     (compound_encode_hdr_maxsz + \
                                encode_sequence_maxsz + \
                                encode_putfh_maxsz + \
                                encode_savefh_maxsz + \
                                encode_putfh_maxsz + \
-                               encode_rename_maxsz + \
-                               encode_getattr_maxsz + \
-                               encode_restorefh_maxsz + \
-                               encode_getattr_maxsz)
+                               encode_rename_maxsz)
 #define NFS4_dec_rename_sz     (compound_decode_hdr_maxsz + \
                                decode_sequence_maxsz + \
                                decode_putfh_maxsz + \
                                decode_savefh_maxsz + \
                                decode_putfh_maxsz + \
-                               decode_rename_maxsz + \
-                               decode_getattr_maxsz + \
-                               decode_restorefh_maxsz + \
-                               decode_getattr_maxsz)
+                               decode_rename_maxsz)
 #define NFS4_enc_link_sz       (compound_encode_hdr_maxsz + \
                                encode_sequence_maxsz + \
                                encode_putfh_maxsz + \
                                encode_savefh_maxsz + \
                                encode_putfh_maxsz + \
                                encode_link_maxsz + \
-                               encode_getattr_maxsz + \
                                encode_restorefh_maxsz + \
                                encode_getattr_maxsz)
 #define NFS4_dec_link_sz       (compound_decode_hdr_maxsz + \
@@ -629,7 +620,6 @@ static int nfs4_stat_to_errno(int);
                                decode_savefh_maxsz + \
                                decode_putfh_maxsz + \
                                decode_link_maxsz + \
-                               decode_getattr_maxsz + \
                                decode_restorefh_maxsz + \
                                decode_getattr_maxsz)
 #define NFS4_enc_symlink_sz    (compound_encode_hdr_maxsz + \
@@ -2052,7 +2042,6 @@ static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
        encode_sequence(xdr, &args->seq_args, &hdr);
        encode_putfh(xdr, args->fh, &hdr);
        encode_remove(xdr, &args->name, &hdr);
-       encode_getfattr(xdr, args->bitmask, &hdr);
        encode_nops(&hdr);
 }
 
@@ -2072,9 +2061,6 @@ static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
        encode_savefh(xdr, &hdr);
        encode_putfh(xdr, args->new_dir, &hdr);
        encode_rename(xdr, args->old_name, args->new_name, &hdr);
-       encode_getfattr(xdr, args->bitmask, &hdr);
-       encode_restorefh(xdr, &hdr);
-       encode_getfattr(xdr, args->bitmask, &hdr);
        encode_nops(&hdr);
 }
 
@@ -2094,7 +2080,6 @@ static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
        encode_savefh(xdr, &hdr);
        encode_putfh(xdr, args->dir_fh, &hdr);
        encode_link(xdr, args->name, &hdr);
-       encode_getfattr(xdr, args->bitmask, &hdr);
        encode_restorefh(xdr, &hdr);
        encode_getfattr(xdr, args->bitmask, &hdr);
        encode_nops(&hdr);
@@ -5782,9 +5767,6 @@ static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
        if (status)
                goto out;
        status = decode_remove(xdr, &res->cinfo);
-       if (status)
-               goto out;
-       decode_getfattr(xdr, res->dir_attr, res->server);
 out:
        return status;
 }
@@ -5814,15 +5796,6 @@ static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
        if (status)
                goto out;
        status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
-       if (status)
-               goto out;
-       /* Current FH is target directory */
-       if (decode_getfattr(xdr, res->new_fattr, res->server))
-               goto out;
-       status = decode_restorefh(xdr);
-       if (status)
-               goto out;
-       decode_getfattr(xdr, res->old_fattr, res->server);
 out:
        return status;
 }
@@ -5858,8 +5831,6 @@ static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
         * Note order: OP_LINK leaves the directory as the current
         *             filehandle.
         */
-       if (decode_getfattr(xdr, res->dir_attr, res->server))
-               goto out;
        status = decode_restorefh(xdr);
        if (status)
                goto out;

diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 696a17e..2e53a3f 100644 (file)
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -540,7 +540,6 @@ struct nfs_commitres {
 struct nfs_removeargs {
        const struct nfs_fh     *fh;
        struct qstr             name;
-       const u32 *             bitmask;
        struct nfs4_sequence_args       seq_args;
 };
 
@@ -559,7 +558,6 @@ struct nfs_renameargs {
        const struct nfs_fh             *new_dir;
        const struct qstr               *old_name;
        const struct qstr               *new_name;
-       const u32                       *bitmask;
        struct nfs4_sequence_args       seq_args;
 };