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Fri, 22 Mar 2024 18:57:36 +0000 (GMT) Received: from epsmgms1p2new.samsung.com (unknown [182.195.42.42]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20240322185736epsmtrp2594f807cda2318093b4a32970e017d89~-Ky02nfzM0597405974epsmtrp27; Fri, 22 Mar 2024 18:57:36 +0000 (GMT) X-AuditID: b6c32a4a-837fa700000025d8-37-65fdd4a01eec Received: from epsmtip1.samsung.com ( [182.195.34.30]) by epsmgms1p2new.samsung.com (Symantec Messaging Gateway) with SMTP id 33.23.08390.0A4DDF56; Sat, 23 Mar 2024 03:57:36 +0900 (KST) Received: from localhost.localdomain (unknown [107.99.41.245]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20240322185734epsmtip1d4df9abc3cf12a412156b2431b22dc79~-KyyxbKpl1491214912epsmtip1b; Fri, 22 Mar 2024 18:57:34 +0000 (GMT) From: Kanchan Joshi To: martin.petersen@oracle.com, axboe@kernel.dk, kbusch@kernel.org, hch@lst.de Cc: io-uring@vger.kernel.org, linux-block@vger.kernel.org, anuj1072538@gmail.com, Anuj Gupta , Kanchan Joshi Subject: [RFC PATCH 3/4] block: modify bio_integrity_map_user to accept iov_iter as argument Date: Sat, 23 Mar 2024 00:20:22 +0530 Message-Id: <20240322185023.131697-4-joshi.k@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240322185023.131697-1-joshi.k@samsung.com> Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprKJsWRmVeSWpSXmKPExsWy7bCmlu6CK39TDQ48Mrf4+PU3i0XThL/M Fqvv9rNZrFx9lMniXes5Fouj/9+yWUw6dI3RYu8tbYvlx/8xOXB67Jx1l93j8tlSj02rOtk8 dt9sYPP4+PQWi0ffllWMHp83yQWwR2XbZKQmpqQWKaTmJeenZOal2yp5B8c7x5uaGRjqGlpa mCsp5CXmptoqufgE6Lpl5gAdpqRQlphTChQKSCwuVtK3synKLy1JVcjILy6xVUotSMkpMCnQ K07MLS7NS9fLSy2xMjQwMDIFKkzIzpjzoJmpYL98xe5/C9kaGD9IdjFyckgImEj0nvvJCmIL CexmlNh+Ia2LkQvI/sQoMfv3bVYI5xujxJUDfawwHU8/P2OCSOxllDg6YzqU85lRomfeZyCH g4NNQFPiwuRSkAYRgQCJp7/PsYHUMAvMYZRYPq+fCSQhLBAn8fr2DRYQm0VAVWLOixZmEJtX wFLi+p99TBDb5CVmXvrODmJzClhJXL/6kwWiRlDi5MwnYDYzUE3z1tnMIAskBFo5JHb96mSH aHaR+LPvNwuELSzx6vgWqLiUxOd3e9kg7GSJSzPPQS0rkXi85yCUbS/ReqqfGeQZZqBn1u/S h9jFJ9H7+wnYjxICvBIdbUIQ1YoS9yY9hQaQuMTDGUugbA+JJZ1P2SDh08soMXHfW9YJjPKz kLwwC8kLsxC2LWBkXsUomVpQnJueWmxaYJSXWg6P2OT83E2M4PSp5bWD8eGDD3qHGJk4GA8x SnAwK4nw7vj/J1WINyWxsiq1KD++qDQntfgQoykwjCcyS4km5wMTeF5JvKGJpYGJmZmZiaWx maGSOO/r1rkpQgLpiSWp2ampBalFMH1MHJxSDUwR86durwicenC91j/B5JuXd1XfCqkx/7fh DMs2nSu5Lpxh8+/f2623WejlgeVPUk3mS7zdov/+3dbyqesLlnCdSX96Ruqx3kmlvfONf5vX eFQUnZpckRHX3bUsSLbslNxchl0eAs/bhYSWfJ5oGG9S33fE7crDncJGpxdHPxOfqzDv7TTd Wg7zxLY9s6/u3LUv+5PEZdkyn03nX20W8c3bUWBywlrZ7rfZlSdyUfIfWOr2TrYoig1f9Fha MGrSt8z97t3XmYv5/om1a72fL+K8788+rhim4veTJ3TIRLJ+l9Sbfjn6tLa6pNpCEYZaTfGl +Xudz2+a6WTedOPuCoUrh7ZdaZta99xMmFHviOQtJZbijERDLeai4kQA1fs10CgEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrOLMWRmVeSWpSXmKPExsWy7bCSnO6CK39TDRZ9VbT4+PU3i0XThL/M Fqvv9rNZrFx9lMniXes5Fouj/9+yWUw6dI3RYu8tbYvlx/8xOXB67Jx1l93j8tlSj02rOtk8 dt9sYPP4+PQWi0ffllWMHp83yQWwR3HZpKTmZJalFunbJXBlzHnQzFSwX75i97+FbA2MHyS7 GDk5JARMJJ5+fsYEYgsJ7GaU2PaSFSIuLtF87Qc7hC0ssfLfc3aImo+MEsvvynQxcnCwCWhK XJhcChIWEQiRWNY6gbmLkYuDWWABo0TTq242kISwQIzEojX7mUFsFgFViTkvWsBsXgFLiet/ 9jFBzJeXmHnpO9h8TgErietXf7JA7LKUmP58NStEvaDEyZlPwOLMQPXNW2czT2AUmIUkNQtJ agEj0ypGydSC4tz03GLDAqO81HK94sTc4tK8dL3k/NxNjOCw19Lawbhn1Qe9Q4xMHIyHGCU4 mJVEeHf8/5MqxJuSWFmVWpQfX1Sak1p8iFGag0VJnPfb694UIYH0xJLU7NTUgtQimCwTB6dU A1PGUhZVhYS2Sd5LRI5zHXyxYPb3SX5W4U+ePbRhmJyxP+rEw4gzKxUSiwy2WC7N1CvgX6wQ wb619fz3z2rh59iKnfwcm1csa01p/eb/rsiYdVHppb83v0wKVi2VV2HmT70/8Vkr51KBnESJ c5sY3/19Lz0jrXThL8cn+asf7v9Ue1piv1niYeXvG6otJ+zyqvK7cLdC12HfHMbfu81nOt6a rDutuoRJXWL23vd1bKyL3i9PVSlK++TucWj369cJv5RvSLfeDzC7Eyx9Ompn1qGe1H9ZIgXb Zi3ayDtZ+236j6kdzKt+qulNUnsyQe2HrJPFLeGHDE3WP/vvT5rgv7Tl8xuew92Nps4nFRQb hCWVWIozEg21mIuKEwGUv7H76gIAAA== X-CMS-MailID: 20240322185736epcas5p3d0093948e9904e775994bcbe735ea0c5 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20240322185736epcas5p3d0093948e9904e775994bcbe735ea0c5 References: <20240322185023.131697-1-joshi.k@samsung.com> From: Anuj Gupta Refactor bio_integrity_map_user to accept iov_iter as argument. This is a prep patch. Signed-off-by: Anuj Gupta Signed-off-by: Kanchan Joshi --- block/bio-integrity.c | 14 ++++++-------- drivers/nvme/host/ioctl.c | 11 +++++++++-- include/linux/bio.h | 7 ++++--- 3 files changed, 19 insertions(+), 13 deletions(-) diff --git a/block/bio-integrity.c b/block/bio-integrity.c index 2e3e8e04961e..e340b5a03cdf 100644 --- a/block/bio-integrity.c +++ b/block/bio-integrity.c @@ -308,17 +308,16 @@ static unsigned int bvec_from_pages(struct bio_vec *bvec, struct page **pages, return nr_bvecs; } -int bio_integrity_map_user(struct bio *bio, void __user *ubuf, ssize_t bytes, - u32 seed) +int bio_integrity_map_user(struct bio *bio, struct iov_iter *iter, + u32 seed) { struct request_queue *q = bdev_get_queue(bio->bi_bdev); unsigned int align = q->dma_pad_mask | queue_dma_alignment(q); struct page *stack_pages[UIO_FASTIOV], **pages = stack_pages; struct bio_vec stack_vec[UIO_FASTIOV], *bvec = stack_vec; + size_t offset, bytes = iter->count; unsigned int direction, nr_bvecs; - struct iov_iter iter; int ret, nr_vecs; - size_t offset; bool copy; if (bio_integrity(bio)) @@ -331,8 +330,7 @@ int bio_integrity_map_user(struct bio *bio, void __user *ubuf, ssize_t bytes, else direction = ITER_SOURCE; - iov_iter_ubuf(&iter, direction, ubuf, bytes); - nr_vecs = iov_iter_npages(&iter, BIO_MAX_VECS + 1); + nr_vecs = iov_iter_npages(iter, BIO_MAX_VECS + 1); if (nr_vecs > BIO_MAX_VECS) return -E2BIG; if (nr_vecs > UIO_FASTIOV) { @@ -342,8 +340,8 @@ int bio_integrity_map_user(struct bio *bio, void __user *ubuf, ssize_t bytes, pages = NULL; } - copy = !iov_iter_is_aligned(&iter, align, align); - ret = iov_iter_extract_pages(&iter, &pages, bytes, nr_vecs, 0, &offset); + copy = !iov_iter_is_aligned(iter, align, align); + ret = iov_iter_extract_pages(iter, &pages, bytes, nr_vecs, 0, &offset); if (unlikely(ret < 0)) goto free_bvec; diff --git a/drivers/nvme/host/ioctl.c b/drivers/nvme/host/ioctl.c index 3dfd5ae99ae0..deee13000f08 100644 --- a/drivers/nvme/host/ioctl.c +++ b/drivers/nvme/host/ioctl.c @@ -145,8 +145,15 @@ static int nvme_map_user_request(struct request *req, u64 ubuffer, if (bdev) { bio_set_dev(bio, bdev); if (meta_buffer && meta_len) { - ret = bio_integrity_map_user(bio, meta_buffer, meta_len, - meta_seed); + struct iov_iter iter; + unsigned int direction; + + if (bio_data_dir(bio) == READ) + direction = ITER_DEST; + else + direction = ITER_SOURCE; + iov_iter_ubuf(&iter, direction, meta_buffer, meta_len); + ret = bio_integrity_map_user(bio, &iter, meta_seed); if (ret) goto out_unmap; req->cmd_flags |= REQ_INTEGRITY; diff --git a/include/linux/bio.h b/include/linux/bio.h index 875d792bffff..20cf47fc851f 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -723,7 +723,7 @@ static inline bool bioset_initialized(struct bio_set *bs) for_each_bio(_bio) \ bip_for_each_vec(_bvl, _bio->bi_integrity, _iter) -int bio_integrity_map_user(struct bio *bio, void __user *ubuf, ssize_t len, u32 seed); +int bio_integrity_map_user(struct bio *bio, struct iov_iter *iter, u32 seed); extern struct bio_integrity_payload *bio_integrity_alloc(struct bio *, gfp_t, unsigned int); extern int bio_integrity_add_page(struct bio *, struct page *, unsigned int, unsigned int); extern bool bio_integrity_prep(struct bio *); @@ -795,8 +795,9 @@ static inline int bio_integrity_add_page(struct bio *bio, struct page *page, return 0; } -static inline int bio_integrity_map_user(struct bio *bio, void __user *ubuf, - ssize_t len, u32 seed) +static inline int bio_integrity_map_user(struct bio *bio, struct iov_iter *iter, + u32 seed) + { return -EINVAL; } -- 2.25.1