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([43.153.32.141]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-77d8c3adfd4sm13316513b3a.82.2025.09.22.21.22.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Sep 2025 21:22:04 -0700 (PDT) From: alexjlzheng@gmail.com X-Google-Original-From: alexjlzheng@tencent.com To: brauner@kernel.org, djwong@kernel.org, hch@infradead.org, kernel@pankajraghav.com Cc: linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, yi.zhang@huawei.com, Jinliang Zheng Subject: [PATCH v5 1/4] iomap: make sure iomap_adjust_read_range() are aligned with block_size Date: Tue, 23 Sep 2025 12:21:55 +0800 Message-ID: <20250923042158.1196568-2-alexjlzheng@tencent.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250923042158.1196568-1-alexjlzheng@tencent.com> References: <20250923042158.1196568-1-alexjlzheng@tencent.com> 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" From: Jinliang Zheng iomap_folio_state marks the uptodate state in units of block_size, so it is better to check that pos and length are aligned with block_size. Signed-off-by: Jinliang Zheng --- fs/iomap/buffered-io.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index fd827398afd2..ee1b2cd8a4b4 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -234,6 +234,9 @@ static void iomap_adjust_read_range(struct inode *inode= , struct folio *folio, unsigned first =3D poff >> block_bits; unsigned last =3D (poff + plen - 1) >> block_bits; =20 + WARN_ON_ONCE(*pos & (block_size - 1)); + WARN_ON_ONCE(length & (block_size - 1)); + /* * If the block size is smaller than the page size, we need to check the * per-block uptodate status and adjust the offset and length if needed --=20 2.49.0