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Wed, 17 Sep 2025 07:14:49 -0700 (PDT) Message-ID: Date: Wed, 17 Sep 2025 08:14:48 -0600 Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 02/10] io_uring: add support for IORING_OP_NAME_TO_HANDLE_AT To: Thomas Bertschinger , io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, viro@zeniv.linux.org.uk, brauner@kernel.org, linux-nfs@vger.kernel.org, linux-xfs@vger.kernel.org, cem@kernel.org, chuck.lever@oracle.com, jlayton@kernel.org, amir73il@gmail.com References: <20250912152855.689917-1-tahbertschinger@gmail.com> <20250912152855.689917-3-tahbertschinger@gmail.com> Content-Language: en-US From: Jens Axboe In-Reply-To: <20250912152855.689917-3-tahbertschinger@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 9/12/25 9:28 AM, Thomas Bertschinger wrote: > +#if defined(CONFIG_FHANDLE) > +int io_name_to_handle_at_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) > +{ > + struct io_name_to_handle *nh = io_kiocb_to_cmd(req, struct io_name_to_handle); > + > + nh->dfd = READ_ONCE(sqe->fd); > + nh->flags = READ_ONCE(sqe->name_to_handle_flags); > + nh->path = u64_to_user_ptr(READ_ONCE(sqe->addr)); > + nh->ufh = u64_to_user_ptr(READ_ONCE(sqe->addr2)); > + nh->mount_id = u64_to_user_ptr(READ_ONCE(sqe->addr3)); > + > + return 0; > +} Should probably include a: if (sqe->len) return -EINVAL; to allow for using that field in the future, should that become necessary. Outside of that, this patch looks fine to me. -- Jens Axboe