From: Benny Halevy <bhalevy@xxxxxxxxxxx>
All use sites for nfs{,4}_stat_to_errno negate their return value.
It's more efficient to return a negative error from the stat_to_errno convertors
rather than negating its return value everywhere. This also produces slightly
smaller code.
Signed-off-by: Benny Halevy <bhalevy@xxxxxxxxxxx>
Signed-off-by: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
---
fs/nfs/nfs2xdr.c | 76 ++++++++++++++++++++++++++-------------------------
fs/nfs/nfs3xdr.c | 34 +++++++++++------------
fs/nfs/nfs4xdr.c | 80 +++++++++++++++++++++++++++---------------------------
3 files changed, 95 insertions(+), 95 deletions(-)
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index 86a80b3..28bab67 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -267,7 +267,7 @@ nfs_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
int status;
if ((status = ntohl(*p++)))
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
p = xdr_decode_fattr(p, res->fattr);
count = ntohl(*p++);
@@ -432,7 +432,7 @@ nfs_xdr_readdirres(struct rpc_rqst *req, __be32 *p, void *dummy)
__be32 *end, *entry, *kaddr;
if ((status = ntohl(*p++)))
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
hdrlen = (u8 *) p - (u8 *) iov->iov_base;
if (iov->iov_len < hdrlen) {
@@ -537,7 +537,7 @@ nfs_xdr_stat(struct rpc_rqst *req, __be32 *p, void *dummy)
int status;
if ((status = ntohl(*p++)) != 0)
- status = -nfs_stat_to_errno(status);
+ status = nfs_stat_to_errno(status);
return status;
}
@@ -551,7 +551,7 @@ nfs_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
int status;
if ((status = ntohl(*p++)))
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
xdr_decode_fattr(p, fattr);
return 0;
}
@@ -566,7 +566,7 @@ nfs_xdr_diropres(struct rpc_rqst *req, __be32 *p, struct nfs_diropok *res)
int status;
if ((status = ntohl(*p++)))
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
p = xdr_decode_fhandle(p, res->fh);
xdr_decode_fattr(p, res->fattr);
return 0;
@@ -604,7 +604,7 @@ nfs_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, void *dummy)
int status;
if ((status = ntohl(*p++)))
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
/* Convert length of symlink */
len = ntohl(*p++);
if (len >= rcvbuf->page_len) {
@@ -653,7 +653,7 @@ nfs_xdr_statfsres(struct rpc_rqst *req, __be32 *p, struct nfs2_fsstat *res)
int status;
if ((status = ntohl(*p++)))
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
res->tsize = ntohl(*p++);
res->bsize = ntohl(*p++);
@@ -672,39 +672,39 @@ static struct {
int errno;
} nfs_errtbl[] = {
{ NFS_OK, 0 },
- { NFSERR_PERM, EPERM },
- { NFSERR_NOENT, ENOENT },
- { NFSERR_IO, errno_NFSERR_IO },
- { NFSERR_NXIO, ENXIO },
-/* { NFSERR_EAGAIN, EAGAIN }, */
- { NFSERR_ACCES, EACCES },
- { NFSERR_EXIST, EEXIST },
- { NFSERR_XDEV, EXDEV },
- { NFSERR_NODEV, ENODEV },
- { NFSERR_NOTDIR, ENOTDIR },
- { NFSERR_ISDIR, EISDIR },
- { NFSERR_INVAL, EINVAL },
- { NFSERR_FBIG, EFBIG },
- { NFSERR_NOSPC, ENOSPC },
- { NFSERR_ROFS, EROFS },
- { NFSERR_MLINK, EMLINK },
- { NFSERR_NAMETOOLONG, ENAMETOOLONG },
- { NFSERR_NOTEMPTY, ENOTEMPTY },
- { NFSERR_DQUOT, EDQUOT },
- { NFSERR_STALE, ESTALE },
- { NFSERR_REMOTE, EREMOTE },
+ { NFSERR_PERM, -EPERM },
+ { NFSERR_NOENT, -ENOENT },
+ { NFSERR_IO, -errno_NFSERR_IO},
+ { NFSERR_NXIO, -ENXIO },
+/* { NFSERR_EAGAIN, -EAGAIN }, */
+ { NFSERR_ACCES, -EACCES },
+ { NFSERR_EXIST, -EEXIST },
+ { NFSERR_XDEV, -EXDEV },
+ { NFSERR_NODEV, -ENODEV },
+ { NFSERR_NOTDIR, -ENOTDIR },
+ { NFSERR_ISDIR, -EISDIR },
+ { NFSERR_INVAL, -EINVAL },
+ { NFSERR_FBIG, -EFBIG },
+ { NFSERR_NOSPC, -ENOSPC },
+ { NFSERR_ROFS, -EROFS },
+ { NFSERR_MLINK, -EMLINK },
+ { NFSERR_NAMETOOLONG, -ENAMETOOLONG },
+ { NFSERR_NOTEMPTY, -ENOTEMPTY },
+ { NFSERR_DQUOT, -EDQUOT },
+ { NFSERR_STALE, -ESTALE },
+ { NFSERR_REMOTE, -EREMOTE },
#ifdef EWFLUSH
- { NFSERR_WFLUSH, EWFLUSH },
+ { NFSERR_WFLUSH, -EWFLUSH },
#endif
- { NFSERR_BADHANDLE, EBADHANDLE },
- { NFSERR_NOT_SYNC, ENOTSYNC },
- { NFSERR_BAD_COOKIE, EBADCOOKIE },
- { NFSERR_NOTSUPP, ENOTSUPP },
- { NFSERR_TOOSMALL, ETOOSMALL },
- { NFSERR_SERVERFAULT, ESERVERFAULT },
- { NFSERR_BADTYPE, EBADTYPE },
- { NFSERR_JUKEBOX, EJUKEBOX },
- { -1, EIO }
+ { NFSERR_BADHANDLE, -EBADHANDLE },
+ { NFSERR_NOT_SYNC, -ENOTSYNC },
+ { NFSERR_BAD_COOKIE, -EBADCOOKIE },
+ { NFSERR_NOTSUPP, -ENOTSUPP },
+ { NFSERR_TOOSMALL, -ETOOSMALL },
+ { NFSERR_SERVERFAULT, -ESERVERFAULT },
+ { NFSERR_BADTYPE, -EBADTYPE },
+ { NFSERR_JUKEBOX, -EJUKEBOX },
+ { -1, -EIO }
};
/*
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index fb03048..11cddde 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -515,7 +515,7 @@ nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res
/* Decode post_op_attrs */
p = xdr_decode_post_op_attr(p, res->dir_attr);
if (status)
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
/* Decode verifier cookie */
if (res->verf) {
res->verf[0] = *p++;
@@ -751,7 +751,7 @@ nfs3_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
int status;
if ((status = ntohl(*p++)))
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
xdr_decode_fattr(p, fattr);
return 0;
}
@@ -766,7 +766,7 @@ nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
int status;
if ((status = ntohl(*p++)))
- status = -nfs_stat_to_errno(status);
+ status = nfs_stat_to_errno(status);
xdr_decode_wcc_data(p, fattr);
return status;
}
@@ -786,7 +786,7 @@ nfs3_xdr_lookupres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res)
int status;
if ((status = ntohl(*p++))) {
- status = -nfs_stat_to_errno(status);
+ status = nfs_stat_to_errno(status);
} else {
if (!(p = xdr_decode_fhandle(p, res->fh)))
return -errno_NFSERR_IO;
@@ -806,7 +806,7 @@ nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res)
p = xdr_decode_post_op_attr(p, res->fattr);
if (status)
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
res->access = ntohl(*p++);
return 0;
}
@@ -843,7 +843,7 @@ nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
p = xdr_decode_post_op_attr(p, fattr);
if (status != 0)
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
/* Convert length of symlink */
len = ntohl(*p++);
@@ -891,7 +891,7 @@ nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
p = xdr_decode_post_op_attr(p, res->fattr);
if (status != 0)
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
/* Decode reply count and EOF flag. NFSv3 is somewhat redundant
* in that it puts the count both in the res struct and in the
@@ -941,7 +941,7 @@ nfs3_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res)
p = xdr_decode_wcc_data(p, res->fattr);
if (status != 0)
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
res->count = ntohl(*p++);
res->verf->committed = (enum nfs3_stable_how)ntohl(*p++);
@@ -972,7 +972,7 @@ nfs3_xdr_createres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res)
res->fattr->valid = 0;
}
} else {
- status = -nfs_stat_to_errno(status);
+ status = nfs_stat_to_errno(status);
}
p = xdr_decode_wcc_data(p, res->dir_attr);
return status;
@@ -987,7 +987,7 @@ nfs3_xdr_renameres(struct rpc_rqst *req, __be32 *p, struct nfs3_renameres *res)
int status;
if ((status = ntohl(*p++)) != 0)
- status = -nfs_stat_to_errno(status);
+ status = nfs_stat_to_errno(status);
p = xdr_decode_wcc_data(p, res->fromattr);
p = xdr_decode_wcc_data(p, res->toattr);
return status;
@@ -1002,7 +1002,7 @@ nfs3_xdr_linkres(struct rpc_rqst *req, __be32 *p, struct nfs3_linkres *res)
int status;
if ((status = ntohl(*p++)) != 0)
- status = -nfs_stat_to_errno(status);
+ status = nfs_stat_to_errno(status);
p = xdr_decode_post_op_attr(p, res->fattr);
p = xdr_decode_wcc_data(p, res->dir_attr);
return status;
@@ -1020,7 +1020,7 @@ nfs3_xdr_fsstatres(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *res)
p = xdr_decode_post_op_attr(p, res->fattr);
if (status != 0)
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
p = xdr_decode_hyper(p, &res->tbytes);
p = xdr_decode_hyper(p, &res->fbytes);
@@ -1045,7 +1045,7 @@ nfs3_xdr_fsinfores(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *res)
p = xdr_decode_post_op_attr(p, res->fattr);
if (status != 0)
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
res->rtmax = ntohl(*p++);
res->rtpref = ntohl(*p++);
@@ -1073,7 +1073,7 @@ nfs3_xdr_pathconfres(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *res)
p = xdr_decode_post_op_attr(p, res->fattr);
if (status != 0)
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
res->max_link = ntohl(*p++);
res->max_namelen = ntohl(*p++);
@@ -1092,7 +1092,7 @@ nfs3_xdr_commitres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res)
status = ntohl(*p++);
p = xdr_decode_wcc_data(p, res->fattr);
if (status != 0)
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
res->verf->verifier[0] = *p++;
res->verf->verifier[1] = *p++;
@@ -1114,7 +1114,7 @@ nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p,
int err, base;
if (status != 0)
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
p = xdr_decode_post_op_attr(p, res->fattr);
res->mask = ntohl(*p++);
if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT))
@@ -1141,7 +1141,7 @@ nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
int status = ntohl(*p++);
if (status)
- return -nfs_stat_to_errno(status);
+ return nfs_stat_to_errno(status);
xdr_decode_post_op_attr(p, fattr);
return 0;
}
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index b8b2e39..809ef0d 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -2241,7 +2241,7 @@ static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
}
READ32(nfserr);
if (nfserr != NFS_OK)
- return -nfs4_stat_to_errno(nfserr);
+ return nfs4_stat_to_errno(nfserr);
return 0;
}
@@ -3760,7 +3760,7 @@ static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
READ_BUF(len);
return -NFSERR_CLID_INUSE;
} else
- return -nfs4_stat_to_errno(nfserr);
+ return nfs4_stat_to_errno(nfserr);
return 0;
}
@@ -4422,7 +4422,7 @@ static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs_fsinf
if (!status)
status = decode_fsinfo(&xdr, fsinfo);
if (!status)
- status = -nfs4_stat_to_errno(hdr.status);
+ status = nfs4_stat_to_errno(hdr.status);
return status;
}
@@ -4512,7 +4512,7 @@ static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
if (!status)
status = decode_setclientid(&xdr, clp);
if (!status)
- status = -nfs4_stat_to_errno(hdr.status);
+ status = nfs4_stat_to_errno(hdr.status);
return status;
}
@@ -4534,7 +4534,7 @@ static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, str
if (!status)
status = decode_fsinfo(&xdr, fsinfo);
if (!status)
- status = -nfs4_stat_to_errno(hdr.status);
+ status = nfs4_stat_to_errno(hdr.status);
return status;
}
@@ -4644,42 +4644,42 @@ static struct {
int errno;
} nfs_errtbl[] = {
{ NFS4_OK, 0 },
- { NFS4ERR_PERM, EPERM },
- { NFS4ERR_NOENT, ENOENT },
- { NFS4ERR_IO, errno_NFSERR_IO },
- { NFS4ERR_NXIO, ENXIO },
- { NFS4ERR_ACCESS, EACCES },
- { NFS4ERR_EXIST, EEXIST },
- { NFS4ERR_XDEV, EXDEV },
- { NFS4ERR_NOTDIR, ENOTDIR },
- { NFS4ERR_ISDIR, EISDIR },
- { NFS4ERR_INVAL, EINVAL },
- { NFS4ERR_FBIG, EFBIG },
- { NFS4ERR_NOSPC, ENOSPC },
- { NFS4ERR_ROFS, EROFS },
- { NFS4ERR_MLINK, EMLINK },
- { NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
- { NFS4ERR_NOTEMPTY, ENOTEMPTY },
- { NFS4ERR_DQUOT, EDQUOT },
- { NFS4ERR_STALE, ESTALE },
- { NFS4ERR_BADHANDLE, EBADHANDLE },
- { NFS4ERR_BADOWNER, EINVAL },
- { NFS4ERR_BADNAME, EINVAL },
- { NFS4ERR_BAD_COOKIE, EBADCOOKIE },
- { NFS4ERR_NOTSUPP, ENOTSUPP },
- { NFS4ERR_TOOSMALL, ETOOSMALL },
- { NFS4ERR_SERVERFAULT, ESERVERFAULT },
- { NFS4ERR_BADTYPE, EBADTYPE },
- { NFS4ERR_LOCKED, EAGAIN },
- { NFS4ERR_RESOURCE, EREMOTEIO },
- { NFS4ERR_SYMLINK, ELOOP },
- { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
- { NFS4ERR_DEADLOCK, EDEADLK },
- { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
+ { NFS4ERR_PERM, -EPERM },
+ { NFS4ERR_NOENT, -ENOENT },
+ { NFS4ERR_IO, -errno_NFSERR_IO},
+ { NFS4ERR_NXIO, -ENXIO },
+ { NFS4ERR_ACCESS, -EACCES },
+ { NFS4ERR_EXIST, -EEXIST },
+ { NFS4ERR_XDEV, -EXDEV },
+ { NFS4ERR_NOTDIR, -ENOTDIR },
+ { NFS4ERR_ISDIR, -EISDIR },
+ { NFS4ERR_INVAL, -EINVAL },
+ { NFS4ERR_FBIG, -EFBIG },
+ { NFS4ERR_NOSPC, -ENOSPC },
+ { NFS4ERR_ROFS, -EROFS },
+ { NFS4ERR_MLINK, -EMLINK },
+ { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
+ { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
+ { NFS4ERR_DQUOT, -EDQUOT },
+ { NFS4ERR_STALE, -ESTALE },
+ { NFS4ERR_BADHANDLE, -EBADHANDLE },
+ { NFS4ERR_BADOWNER, -EINVAL },
+ { NFS4ERR_BADNAME, -EINVAL },
+ { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
+ { NFS4ERR_NOTSUPP, -ENOTSUPP },
+ { NFS4ERR_TOOSMALL, -ETOOSMALL },
+ { NFS4ERR_SERVERFAULT, -ESERVERFAULT },
+ { NFS4ERR_BADTYPE, -EBADTYPE },
+ { NFS4ERR_LOCKED, -EAGAIN },
+ { NFS4ERR_RESOURCE, -EREMOTEIO },
+ { NFS4ERR_SYMLINK, -ELOOP },
+ { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
+ { NFS4ERR_DEADLOCK, -EDEADLK },
+ { NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs
* to be handled by a
* middle-layer.
*/
- { -1, EIO }
+ { -1, -EIO }
};
/*
@@ -4696,14 +4696,14 @@ nfs4_stat_to_errno(int stat)
}
if (stat <= 10000 || stat > 10100) {
/* The server is looney tunes. */
- return ESERVERFAULT;
+ return -ESERVERFAULT;
}
/* If we cannot translate the error, the recovery routines should
* handle it.
* Note: remaining NFSv4 error codes have values > 10000, so should
* not conflict with native Linux error codes.
*/
- return stat;
+ return -stat;
}
#define PROC(proc, argtype, restype) \
--
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