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authorTrond Myklebust <Trond.Myklebust@netapp.com>2008-12-23 15:21:31 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2008-12-23 15:21:31 -0500
commit88a9fe8cae3bb52e82489447f45e8d7ba1409ca8 (patch)
treeacef9d0b7d4c8c2e98faf852ab8bc0173842fbe5
parent136221fc3219b3805c48db5da065e8e3467175d4 (diff)
SUNRPC: Remove the last remnant of the BKL...
Somehow, this escaped the previous purge. There should be no need to keep any extra locks in the XDR callbacks. The NFS client XDR code only writes into private objects, whereas all reads of shared objects are confined to fields that do not change, such as filehandles... Ditto for lockd, the NFSv2/v3 client mount code, and rpcbind. The nfsd XDR code may require the BKL, but since it does a synchronous RPC call from a thread that already holds the lock, that issue is moot. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
-rw-r--r--include/linux/sunrpc/xdr.h15
-rw-r--r--net/sunrpc/auth.c4
-rw-r--r--net/sunrpc/auth_gss/auth_gss.c10
3 files changed, 7 insertions, 22 deletions
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index e4057d729f0..49e1eb45446 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -37,21 +37,6 @@ struct xdr_netobj {
typedef int (*kxdrproc_t)(void *rqstp, __be32 *data, void *obj);
/*
- * We're still requiring the BKL in the xdr code until it's been
- * more carefully audited, at which point this wrapper will become
- * unnecessary.
- */
-static inline int rpc_call_xdrproc(kxdrproc_t xdrproc, void *rqstp, __be32 *data, void *obj)
-{
- int ret;
-
- lock_kernel();
- ret = xdrproc(rqstp, data, obj);
- unlock_kernel();
- return ret;
-}
-
-/*
* Basic structure for transmission/reception of a client XDR message.
* Features a header (for a linear buffer containing RPC headers
* and the data payload for short messages), and then an array of
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index cb216b2df66..6e28744b170 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -513,7 +513,7 @@ rpcauth_wrap_req(struct rpc_task *task, kxdrproc_t encode, void *rqstp,
if (cred->cr_ops->crwrap_req)
return cred->cr_ops->crwrap_req(task, encode, rqstp, data, obj);
/* By default, we encode the arguments normally. */
- return rpc_call_xdrproc(encode, rqstp, data, obj);
+ return encode(rqstp, data, obj);
}
int
@@ -528,7 +528,7 @@ rpcauth_unwrap_resp(struct rpc_task *task, kxdrproc_t decode, void *rqstp,
return cred->cr_ops->crunwrap_resp(task, decode, rqstp,
data, obj);
/* By default, we decode the arguments normally. */
- return rpc_call_xdrproc(decode, rqstp, data, obj);
+ return decode(rqstp, data, obj);
}
int
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index 853a4142cea..b8561597f0c 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -1017,7 +1017,7 @@ gss_wrap_req_integ(struct rpc_cred *cred, struct gss_cl_ctx *ctx,
offset = (u8 *)p - (u8 *)snd_buf->head[0].iov_base;
*p++ = htonl(rqstp->rq_seqno);
- status = rpc_call_xdrproc(encode, rqstp, p, obj);
+ status = encode(rqstp, p, obj);
if (status)
return status;
@@ -1111,7 +1111,7 @@ gss_wrap_req_priv(struct rpc_cred *cred, struct gss_cl_ctx *ctx,
offset = (u8 *)p - (u8 *)snd_buf->head[0].iov_base;
*p++ = htonl(rqstp->rq_seqno);
- status = rpc_call_xdrproc(encode, rqstp, p, obj);
+ status = encode(rqstp, p, obj);
if (status)
return status;
@@ -1170,12 +1170,12 @@ gss_wrap_req(struct rpc_task *task,
/* The spec seems a little ambiguous here, but I think that not
* wrapping context destruction requests makes the most sense.
*/
- status = rpc_call_xdrproc(encode, rqstp, p, obj);
+ status = encode(rqstp, p, obj);
goto out;
}
switch (gss_cred->gc_service) {
case RPC_GSS_SVC_NONE:
- status = rpc_call_xdrproc(encode, rqstp, p, obj);
+ status = encode(rqstp, p, obj);
break;
case RPC_GSS_SVC_INTEGRITY:
status = gss_wrap_req_integ(cred, ctx, encode,
@@ -1291,7 +1291,7 @@ gss_unwrap_resp(struct rpc_task *task,
cred->cr_auth->au_rslack = cred->cr_auth->au_verfsize + (p - savedp)
+ (savedlen - head->iov_len);
out_decode:
- status = rpc_call_xdrproc(decode, rqstp, p, obj);
+ status = decode(rqstp, p, obj);
out:
gss_put_ctx(ctx);
dprintk("RPC: %5u gss_unwrap_resp returning %d\n", task->tk_pid,