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([43.153.32.141]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-241e8976f53sm244113645ad.113.2025.08.09.21.48.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 09 Aug 2025 21:48:13 -0700 (PDT) From: alexjlzheng@gmail.com X-Google-Original-From: alexjlzheng@tencent.com To: brauner@kernel.org, djwong@kernel.org Cc: linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Jinliang Zheng Subject: [PATCH 1/4] iomap: make sure iomap_adjust_read_range() are aligned with block_size Date: Sun, 10 Aug 2025 12:48:03 +0800 Message-ID: <20250810044806.3433783-2-alexjlzheng@tencent.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250810044806.3433783-1-alexjlzheng@tencent.com> References: <20250810044806.3433783-1-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..27fa93ca8675 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 + BUG_ON(*pos % block_size); + BUG_ON(length % block_size); + /* * 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