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[1.160.226.215]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-35bc63286ebsm2695321a91.17.2026.03.19.07.18.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Mar 2026 07:18:58 -0700 (PDT) From: Sean Chang To: Andrew Lunn , Chuck Lever , David Laight , Anna Schumaker , Andy Shevchenko Cc: netdev@vger.kernel.org, linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org, Sean Chang Subject: [PATCH v3 1/3] nfsd/lockd: Remove redundant debug checks Date: Thu, 19 Mar 2026 22:18:44 +0800 Message-Id: <20260319141846.78222-2-seanwascoding@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260319141846.78222-1-seanwascoding@gmail.com> References: <20260319141846.78222-1-seanwascoding@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Remove unnecessary IS_ENABLED(CONFIG_SUNRPC_DEBUG) guards and #ifdefs in nfsfh.c and svclock.c. Verification with .lst files under -O2 confirms that the compiler successfully performs "dead code elimination". Even when variables (like char buf[] in nfsfh.c) or static helper functions (like nlmdbg_cookie2a() in svclock.c) are declared without #ifdef, they are completely optimized out (no stack allocation, no symbol references in the final executable) as they are only referenced within no_printk(). Suggested-by: Andrew Lunn Signed-off-by: Sean Chang --- fs/lockd/svclock.c | 7 ------- fs/nfsd/nfsfh.c | 8 +++----- 2 files changed, 3 insertions(+), 12 deletions(-) diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c index ee23f5802af1..9b978a087b3c 100644 --- a/fs/lockd/svclock.c +++ b/fs/lockd/svclock.c @@ -47,7 +47,6 @@ static const struct rpc_call_ops nlmsvc_grant_ops; static LIST_HEAD(nlm_blocked); static DEFINE_SPINLOCK(nlm_blocked_lock); -#if IS_ENABLED(CONFIG_SUNRPC_DEBUG) static const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie) { /* @@ -74,12 +73,6 @@ static const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie) return buf; } -#else -static inline const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie) -{ - return "???"; -} -#endif /* * Insert a blocked lock into the global list diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c index 68b629fbaaeb..91514326d1b4 100644 --- a/fs/nfsd/nfsfh.c +++ b/fs/nfsd/nfsfh.c @@ -105,12 +105,10 @@ static __be32 nfsd_setuser_and_check_port(struct svc_rqst *rqstp, { /* Check if the request originated from a secure port. */ if (rqstp && !nfsd_originating_port_ok(rqstp, cred, exp)) { - if (IS_ENABLED(CONFIG_SUNRPC_DEBUG)) { - char buf[RPC_MAX_ADDRBUFLEN]; + char buf[RPC_MAX_ADDRBUFLEN]; - dprintk("nfsd: request from insecure port %s!\n", - svc_print_addr(rqstp, buf, sizeof(buf))); - } + dprintk("nfsd: request from insecure port %s!\n", + svc_print_addr(rqstp, buf, sizeof(buf))); return nfserr_perm; } -- 2.34.1