NFSD adds PAGE_SIZE for those RPCs which not support op_rsize_bop(),
A PAGE_SIZE (4096) is larger than many real response size, eg,
access (op_encode_hdr_size + 2), seek (op_encode_hdr_size + 3).
This patch just adds op_rsize_bop() for all RPCs getting response size.
Signed-off-by: Kinglong Mee <kinglongmee@xxxxxxxxx>
---
fs/nfsd/nfs4proc.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++++-----
1 file changed, 63 insertions(+), 6 deletions(-)
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 74a6e57..aed3dba 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1838,6 +1838,12 @@ static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd
return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
}
+static inline u32 nfsd4_access_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ /* ac_supported, ac_resp_access */
+ return (op_encode_hdr_size + 2)* sizeof(__be32);
+}
+
static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
{
return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
@@ -1892,6 +1898,11 @@ static inline u32 nfsd4_getattr_rsize(struct svc_rqst *rqstp,
return ret;
}
+static inline u32 nfsd4_getfh_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + 1) * sizeof(__be32) + NFS4_FHSIZE;
+}
+
static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
{
return (op_encode_hdr_size + op_encode_change_info_maxsz)
@@ -1933,6 +1944,11 @@ static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *o
XDR_QUADLEN(rlen)) * sizeof(__be32);
}
+static inline u32 nfsd4_readlink_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + 1) * sizeof(__be32) + PAGE_SIZE;
+}
+
static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
{
return (op_encode_hdr_size + op_encode_change_info_maxsz)
@@ -1952,11 +1968,23 @@ static inline u32 nfsd4_sequence_rsize(struct svc_rqst *rqstp,
+ XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) * sizeof(__be32);
}
+static inline u32 nfsd4_test_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + 1 + op->u.test_stateid.ts_num_ids)
+ * sizeof(__be32);
+}
+
static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
{
return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
}
+static inline u32 nfsd4_secinfo_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + RPC_AUTH_MAXFLAVOR *
+ (4 + XDR_QUADLEN(GSS_OID_MAX_LEN))) * sizeof(__be32);
+}
+
static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
{
return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) *
@@ -2011,6 +2039,19 @@ static inline u32 nfsd4_copy_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
}
#ifdef CONFIG_NFSD_PNFS
+static inline u32 nfsd4_getdeviceinfo_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ u32 maxcount = 0, rlen = 0;
+
+ maxcount = svc_max_payload(rqstp);
+ rlen = min(op->u.getdeviceinfo.gd_maxcount, maxcount);
+
+ return (op_encode_hdr_size +
+ 1 /* gd_layout_type*/ +
+ XDR_QUADLEN(rlen) +
+ 2 /* gd_notify_types */) * sizeof(__be32);
+}
+
/*
* At this stage we don't really know what layout driver will handle the request,
* so we need to define an arbitrary upper bound here.
@@ -2040,10 +2081,17 @@ static inline u32 nfsd4_layoutreturn_rsize(struct svc_rqst *rqstp, struct nfsd4_
}
#endif /* CONFIG_NFSD_PNFS */
+
+static inline u32 nfsd4_seek_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + 3) * sizeof(__be32);
+}
+
static struct nfsd4_operation nfsd4_ops[] = {
[OP_ACCESS] = {
.op_func = (nfsd4op_func)nfsd4_access,
.op_name = "OP_ACCESS",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_access_rsize,
},
[OP_CLOSE] = {
.op_func = (nfsd4op_func)nfsd4_close,
@@ -2081,6 +2129,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
[OP_GETFH] = {
.op_func = (nfsd4op_func)nfsd4_getfh,
.op_name = "OP_GETFH",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_getfh_rsize,
},
[OP_LINK] = {
.op_func = (nfsd4op_func)nfsd4_link,
@@ -2099,6 +2148,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
[OP_LOCKT] = {
.op_func = (nfsd4op_func)nfsd4_lockt,
.op_name = "OP_LOCKT",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
},
[OP_LOCKU] = {
.op_func = (nfsd4op_func)nfsd4_locku,
@@ -2111,15 +2161,18 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_func = (nfsd4op_func)nfsd4_lookup,
.op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
.op_name = "OP_LOOKUP",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_LOOKUPP] = {
.op_func = (nfsd4op_func)nfsd4_lookupp,
.op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
.op_name = "OP_LOOKUPP",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_NVERIFY] = {
.op_func = (nfsd4op_func)nfsd4_nverify,
.op_name = "OP_NVERIFY",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_OPEN] = {
.op_func = (nfsd4op_func)nfsd4_open,
@@ -2177,6 +2230,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
[OP_READLINK] = {
.op_func = (nfsd4op_func)nfsd4_readlink,
.op_name = "OP_READLINK",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_readlink_rsize,
},
[OP_REMOVE] = {
.op_func = (nfsd4op_func)nfsd4_remove,
@@ -2215,6 +2269,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_func = (nfsd4op_func)nfsd4_secinfo,
.op_flags = OP_HANDLES_WRONGSEC,
.op_name = "OP_SECINFO",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_secinfo_rsize,
},
[OP_SETATTR] = {
.op_func = (nfsd4op_func)nfsd4_setattr,
@@ -2240,6 +2295,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
[OP_VERIFY] = {
.op_func = (nfsd4op_func)nfsd4_verify,
.op_name = "OP_VERIFY",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_WRITE] = {
.op_func = (nfsd4op_func)nfsd4_write,
@@ -2314,11 +2370,13 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
.op_flags = OP_HANDLES_WRONGSEC,
.op_name = "OP_SECINFO_NO_NAME",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_secinfo_rsize,
},
[OP_TEST_STATEID] = {
.op_func = (nfsd4op_func)nfsd4_test_stateid,
.op_flags = ALLOWED_WITHOUT_FH,
.op_name = "OP_TEST_STATEID",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_test_stateid_rsize,
},
[OP_FREE_STATEID] = {
.op_func = (nfsd4op_func)nfsd4_free_stateid,
@@ -2332,6 +2390,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_func = (nfsd4op_func)nfsd4_getdeviceinfo,
.op_flags = ALLOWED_WITHOUT_FH,
.op_name = "OP_GETDEVICEINFO",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_getdeviceinfo_rsize,
},
[OP_LAYOUTGET] = {
.op_func = (nfsd4op_func)nfsd4_layoutget,
@@ -2381,6 +2440,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
[OP_SEEK] = {
.op_func = (nfsd4op_func)nfsd4_seek,
.op_name = "OP_SEEK",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_seek_rsize,
},
};
@@ -2425,14 +2485,11 @@ bool nfsd4_spo_must_allow(struct svc_rqst *rqstp)
int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op)
{
- struct nfsd4_operation *opdesc;
- nfsd4op_rsize estimator;
-
if (op->opnum == OP_ILLEGAL)
return op_encode_hdr_size * sizeof(__be32);
- opdesc = OPDESC(op);
- estimator = opdesc->op_rsize_bop;
- return estimator ? estimator(rqstp, op) : PAGE_SIZE;
+
+ BUG_ON(OPDESC(op)->op_rsize_bop == NULL);
+ return OPDESC(op)->op_rsize_bop(rqstp, op);
}
void warn_on_nonidempotent_op(struct nfsd4_op *op)
--
2.9.3
--
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