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Thu, 11 Apr 2024 08:37:32 -0700 (PDT) Received: from localhost.localdomain ([96.43.243.2]) by smtp.gmail.com with ESMTPSA id jc25-20020a056638891900b0047f14b7f6c0sm457056jab.5.2024.04.11.08.37.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Apr 2024 08:37:30 -0700 (PDT) From: Jens Axboe To: linux-kernel@vger.kernel.org Cc: Jens Axboe Subject: [PATCH 210/437] drivers/iommu: convert intel iommu to read/write iterators Date: Thu, 11 Apr 2024 09:15:50 -0600 Message-ID: <20240411153126.16201-211-axboe@kernel.dk> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240411153126.16201-1-axboe@kernel.dk> References: <20240411153126.16201-1-axboe@kernel.dk> 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" Signed-off-by: Jens Axboe --- drivers/iommu/intel/debugfs.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/iommu/intel/debugfs.c b/drivers/iommu/intel/debugfs.c index 86b506af7daa..8655098a3a17 100644 --- a/drivers/iommu/intel/debugfs.c +++ b/drivers/iommu/intel/debugfs.c @@ -679,19 +679,19 @@ static int dmar_perf_latency_open(struct inode *inode= , struct file *filp) return single_open(filp, latency_show, NULL); } =20 -static ssize_t dmar_perf_latency_write(struct file *filp, - const char __user *ubuf, - size_t cnt, loff_t *ppos) +static ssize_t dmar_perf_latency_write(struct kiocb *iocb, + struct iov_iter *from) { struct dmar_drhd_unit *drhd; struct intel_iommu *iommu; + size_t cnt =3D iov_iter_count(from); int counting; char buf[64]; =20 if (cnt > 63) cnt =3D 63; =20 - if (copy_from_user(&buf, ubuf, cnt)) + if (!copy_from_iter_full(&buf, cnt, from)) return -EFAULT; =20 buf[cnt] =3D 0; @@ -738,14 +738,14 @@ static ssize_t dmar_perf_latency_write(struct file *f= ilp, return -EINVAL; } =20 - *ppos +=3D cnt; + iocb->ki_pos +=3D cnt; return cnt; } =20 static const struct file_operations dmar_perf_latency_fops =3D { .open =3D dmar_perf_latency_open, - .write =3D dmar_perf_latency_write, - .read =3D seq_read, + .write_iter =3D dmar_perf_latency_write, + .read_iter =3D seq_read_iter, .llseek =3D seq_lseek, .release =3D single_release, }; --=20 2.43.0