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s=s2048-2021-q4; bh=9DUyzCE+9LcliOjaEta+SPjhznTXiuml9lI23qr5Cbc=; b=iW/EZPJTit9FOYEhY3RKNVkSyH69kYGgpyRoDIbMs/kmpPPXhBI1SfSTPDsXpv5s2y5Q tAUC8B8Z22+pgZTaZecwIe0tWNp0Wx1VhMJwJtQfG99KdUaTGnpxQKytrOCgIGfCLmdH S3WOxHToTz5HFZpGPrBaoMMs44GWLZMb0qmj95QaFxbTMm6cJuqlWVJljUSKqSlRoVKC /Mx/LoiGFJuLdTXc1vC1NMYWN/am9C9GfdIryjGCs1jTzScQ3LAl5nqEfDdT7xG8zJgf arh5fh8wPN6yghGPUjl2d/uVBbUS64stc13+XqI2d0gmbvGgpZroeNZ/dyceZOmus81C DQ== From: Keith Busch To: , Kevin Wolf , , Paolo Bonzini CC: Stefan Hajnoczi , Jens Axboe , Damien Le Moal , Maxim Levitsky , , Keith Busch Subject: [PATCHv3 2/2] block: use the request length for iov alignment Date: Thu, 29 Sep 2022 13:05:23 -0700 Message-ID: <20220929200523.3218710-3-kbusch@meta.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220929200523.3218710-1-kbusch@meta.com> References: <20220929200523.3218710-1-kbusch@meta.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe X-Proofpoint-GUID: Hdf2rZFJhIi8hOlpbJyamwZu9aVOeoM5 X-Proofpoint-ORIG-GUID: Hdf2rZFJhIi8hOlpbJyamwZu9aVOeoM5 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-29_11,2022-09-29_03,2022-06-22_01 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=67.231.145.42; envelope-from=prvs=1271248072=kbusch@meta.com; helo=mx0a-00082601.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Thu, 29 Sep 2022 16:42:15 -0400 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @meta.com) X-ZM-MESSAGEID: 1664484282746100001 Content-Type: text/plain; charset="utf-8" From: Keith Busch An iov length needs to be aligned to the logical block size, which may be larger than the memory alignment. Tested-by: Jens Axboe Signed-off-by: Keith Busch --- block/file-posix.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/block/file-posix.c b/block/file-posix.c index e3f3de2780..af994aba2b 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -2068,13 +2068,14 @@ static bool bdrv_qiov_is_aligned(BlockDriverState *= bs, QEMUIOVector *qiov) { int i; size_t alignment =3D bdrv_min_mem_align(bs); + size_t len =3D bs->bl.request_alignment; IO_CODE(); =20 for (i =3D 0; i < qiov->niov; i++) { if ((uintptr_t) qiov->iov[i].iov_base % alignment) { return false; } - if (qiov->iov[i].iov_len % alignment) { + if (qiov->iov[i].iov_len % len) { return false; } } --=20 2.30.2