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WSL2-Linux-Kernel
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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>
This commit is contained in:
Trond Myklebust 2012-04-27 13:48:19 -04:00
Родитель 7c317fcfba
Коммит 778d28172f
3 изменённых файлов: 7 добавлений и 66 удалений
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34
fs/nfs/nfs4proc.c
Просмотреть файл

@ -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;
}

37
fs/nfs/nfs4xdr.c
Просмотреть файл

@ -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;

2
include/linux/nfs_xdr.h
Просмотреть файл

@ -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;
};