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SUNRPC: Move the server-side GSS upcall to a noinline function

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Since upcalls are infrequent, ensure the compiler places the upcall
mechanism out-of-line from the I/O path.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2023-01-02 12:06:09 -05:00
parent e8e38e1400
commit 4ac5e7a690
1 changed files with 9 additions and 4 deletions
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13
net/sunrpc/auth_gss/svcauth_gss.c
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@ -1444,6 +1444,14 @@ static bool use_gss_proxy(struct net *net)
return sn->use_gss_proxy;
}
static noinline_for_stack int
svcauth_gss_proc_init(struct svc_rqst *rqstp, struct rpc_gss_wire_cred *gc)
{
if (!use_gss_proxy(SVC_NET(rqstp)))
return svcauth_gss_legacy_init(rqstp, gc);
return svcauth_gss_proxy_init(rqstp, gc);
}
#ifdef CONFIG_PROC_FS
static ssize_t write_gssp(struct file *file, const char __user *buf,
@ -1600,10 +1608,7 @@ svcauth_gss_accept(struct svc_rqst *rqstp)
switch (gc->gc_proc) {
case RPC_GSS_PROC_INIT:
case RPC_GSS_PROC_CONTINUE_INIT:
if (use_gss_proxy(SVC_NET(rqstp)))
return svcauth_gss_proxy_init(rqstp, gc);
else
return svcauth_gss_legacy_init(rqstp, gc);
return svcauth_gss_proc_init(rqstp, gc);
case RPC_GSS_PROC_DATA:
case RPC_GSS_PROC_DESTROY:
/* Look up the context, and check the verifier: */