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Thu, 11 Apr 2024 08:40:26 -0700 (PDT) Received: from localhost.localdomain ([96.43.243.2]) by smtp.gmail.com with ESMTPSA id jc25-20020a056638891900b0047f14b7f6c0sm457056jab.5.2024.04.11.08.40.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Apr 2024 08:40:25 -0700 (PDT) From: Jens Axboe To: linux-kernel@vger.kernel.org Cc: Jens Axboe Subject: [PATCH 318/437] drivers/net/xen-netback: convert to read/write iterators Date: Thu, 11 Apr 2024 09:17:38 -0600 Message-ID: <20240411153126.16201-319-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/net/xen-netback/xenbus.c | 19 +++++++------------ 1 file changed, 7 insertions(+), 12 deletions(-) diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xen= bus.c index a78a25b87240..5f2ef4d6bb17 100644 --- a/drivers/net/xen-netback/xenbus.c +++ b/drivers/net/xen-netback/xenbus.c @@ -102,26 +102,21 @@ static int xenvif_read_io_ring(struct seq_file *m, vo= id *v) #define XENVIF_KICK_STR "kick" #define BUFFER_SIZE 32 =20 -static ssize_t -xenvif_write_io_ring(struct file *filp, const char __user *buf, size_t cou= nt, - loff_t *ppos) +static ssize_t xenvif_write_io_ring(struct kiocb *iocb, struct iov_iter *f= rom) { struct xenvif_queue *queue =3D - ((struct seq_file *)filp->private_data)->private; + ((struct seq_file *)iocb->ki_filp->private_data)->private; + size_t count =3D iov_iter_count(from); int len; char write[BUFFER_SIZE]; =20 /* don't allow partial writes and check the length */ - if (*ppos !=3D 0) + if (iocb->ki_pos !=3D 0) return 0; if (count >=3D sizeof(write)) return -ENOSPC; =20 - len =3D simple_write_to_buffer(write, - sizeof(write) - 1, - ppos, - buf, - count); + len =3D simple_copy_from_iter(write, &iocb->ki_pos, sizeof(write) - 1, fr= om); if (len < 0) return len; =20 @@ -152,10 +147,10 @@ static int xenvif_io_ring_open(struct inode *inode, s= truct file *filp) static const struct file_operations xenvif_dbg_io_ring_ops_fops =3D { .owner =3D THIS_MODULE, .open =3D xenvif_io_ring_open, - .read =3D seq_read, + .read_iter =3D seq_read_iter, .llseek =3D seq_lseek, .release =3D single_release, - .write =3D xenvif_write_io_ring, + .write_iter =3D xenvif_write_io_ring, }; =20 static int xenvif_ctrl_show(struct seq_file *m, void *v) --=20 2.43.0