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Sat, 01 Nov 2025 00:41:49 -0700 (PDT) Received: from fedora ([38.183.9.34]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-295426a789asm27969305ad.111.2025.11.01.00.41.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 01 Nov 2025 00:41:49 -0700 (PDT) From: Shi Hao To: martin.petersen@oracle.com Cc: inux-scsi@vger.kernel.org, target-devel@vger.kernel.org, linux-kernel@vger.kernel.org, i.shihao.999@gmail.com Subject: [PATCH] target: substitute kmap() with kmap_local_page() Date: Sat, 1 Nov 2025 13:11:37 +0530 Message-ID: <20251101074137.98988-1-i.shihao.999@gmail.com> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" There was a single use of kmap() which could be replaced with kmap_local_page() for better CPU contention and cache locality. kmap_local_page() ensures non-sleeping operation and provides better multi-core CPU scalability compared to kmap(). Convert kmap() to kmap_local_page() following modern kernel coding practices. Signed-off-by: Shi Hao Reviewed-by: Chaitanya Kulkarni --- drivers/target/target_core_rd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_r= d.c index 6f67cc09c2b5..d6768ea27f94 100644 --- a/drivers/target/target_core_rd.c +++ b/drivers/target/target_core_rd.c @@ -159,9 +159,9 @@ static int rd_allocate_sgl_table(struct rd_dev *rd_dev,= struct rd_dev_sg_table * sg_assign_page(&sg[j], pg); sg[j].length =3D PAGE_SIZE; - p =3D kmap(pg); + p =3D kmap_local_page(pg); memset(p, init_payload, PAGE_SIZE); - kunmap(pg); + kunmap_local(p); } page_offset +=3D sg_per_table; -- 2.51.0