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[71.126.255.178]) by smtp.gmail.com with UTF8SMTPSA id d75a77b69052e-4b11dc91b5csm2100881cf.27.2025.08.14.19.17.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Aug 2025 19:17:46 -0700 (PDT) Date: Thu, 14 Aug 2025 22:17:46 -0400 Message-ID: <8ab2084cc35ddc9f2a4796ff7cd88954@paul-moore.com> Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Mailer: pstg-pwork:20250814_2211/pstg-lib:20250814_1158/pstg-pwork:20250814_2211 From: Paul Moore To: Qianfeng Rong , James Morris , "Serge E. Hallyn" , linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Qianfeng Rong Subject: Re: [PATCH] security: min_addr: use max() to improve code References: <20250814142653.283355-1-rongqianfeng@vivo.com> In-Reply-To: <20250814142653.283355-1-rongqianfeng@vivo.com> On Aug 14, 2025 Qianfeng Rong wrote: > > Use max() to reduce the code in update_mmap_min_addr() and improve its > readability. > > Signed-off-by: Qianfeng Rong > --- > security/min_addr.c | 5 +---- > 1 file changed, 1 insertion(+), 4 deletions(-) > > diff --git a/security/min_addr.c b/security/min_addr.c > index df1bc643d886..50035bc9281c 100644 > --- a/security/min_addr.c > +++ b/security/min_addr.c > @@ -16,10 +16,7 @@ unsigned long dac_mmap_min_addr = CONFIG_DEFAULT_MMAP_MIN_ADDR; > static void update_mmap_min_addr(void) > { > #ifdef CONFIG_LSM_MMAP_MIN_ADDR > - if (dac_mmap_min_addr > CONFIG_LSM_MMAP_MIN_ADDR) > - mmap_min_addr = dac_mmap_min_addr; > - else > - mmap_min_addr = CONFIG_LSM_MMAP_MIN_ADDR; > + mmap_min_addr = max(dac_mmap_min_addr, CONFIG_LSM_MMAP_MIN_ADDR); It seems like the umax() macro would be a better choice here, yes? It might also be a good idea to explicitly include the include/linux/minmax.h header in this file. > #else > mmap_min_addr = dac_mmap_min_addr; > #endif > -- > 2.34.1 -- paul-moore.com