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SUNRPC: De-duplicate .pc_release() call sites

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There was some spaghetti in svc_process_common() that had evolved
over time such that there was still one case that needed a call
to .pc_release() but never made it. That issue was removed in
the previous patch.

As additional insurance against missing this important callout,
ensure that the .pc_release() method is always called, no matter
what the reply_stat is.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Chuck Lever 2021-10-07 16:17:31 -04:00 committed by J. Bruce Fields
parent 0ae93b99be
commit 5b747a594b
1 changed files with 7 additions and 15 deletions
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22
net/sunrpc/svc.c
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@ -1252,7 +1252,7 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec *argv, struct kvec *resv)
__be32 *statp;
u32 prog, vers;
__be32 rpc_stat;
int auth_res;
int auth_res, rc;
__be32 *reply_statp;
rpc_stat = rpc_success;
@ -1353,20 +1353,18 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec *argv, struct kvec *resv)
svc_reserve_auth(rqstp, procp->pc_xdrressize<<2);
/* Call the function that processes the request. */
if (!process.dispatch(rqstp, statp))
goto release_dropit;
rc = process.dispatch(rqstp, statp);
if (procp->pc_release)
procp->pc_release(rqstp);
if (!rc)
goto dropit;
if (rqstp->rq_auth_stat != rpc_auth_ok)
goto err_release_bad_auth;
goto err_bad_auth;
/* Check RPC status result */
if (*statp != rpc_success)
resv->iov_len = ((void*)statp) - resv->iov_base + 4;
/* Release reply info */
if (procp->pc_release)
procp->pc_release(rqstp);
if (procp->pc_encode == NULL)
goto dropit;
@ -1375,9 +1373,6 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec *argv, struct kvec *resv)
goto close_xprt;
return 1; /* Caller can now send it */
release_dropit:
if (procp->pc_release)
procp->pc_release(rqstp);
dropit:
svc_authorise(rqstp); /* doesn't hurt to call this twice */
dprintk("svc: svc_process dropit\n");
@ -1404,9 +1399,6 @@ err_bad_rpc:
svc_putnl(resv, 2);
goto sendit;
err_release_bad_auth:
if (procp->pc_release)
procp->pc_release(rqstp);
err_bad_auth:
dprintk("svc: authentication failed (%d)\n",
be32_to_cpu(rqstp->rq_auth_stat));