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GET /api/1.1/patches/2230315/?format=api
{ "id": 2230315, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2230315/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/patch/177747215062.4109882.16836775067142129229.stgit@frogsfrogsfrogs/", "project": { "id": 8, "url": "http://patchwork.ozlabs.org/api/1.1/projects/8/?format=api", "name": "Linux ext4 filesystem development", "link_name": "linux-ext4", "list_id": "linux-ext4.vger.kernel.org", "list_email": "linux-ext4@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null }, "msgid": "<177747215062.4109882.16836775067142129229.stgit@frogsfrogsfrogs>", "date": "2026-04-29T14:58:06", "name": "[2/3] fuse4fs: set iomap backing device blocksize", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "5b4bddd9c743bac078e41b8b17582955efd34e26", "submitter": { "id": 77032, "url": "http://patchwork.ozlabs.org/api/1.1/people/77032/?format=api", "name": "Darrick J. Wong", "email": "djwong@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-ext4/patch/177747215062.4109882.16836775067142129229.stgit@frogsfrogsfrogs/mbox/", "series": [ { "id": 502089, "url": "http://patchwork.ozlabs.org/api/1.1/series/502089/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/list/?series=502089", "date": "2026-04-29T14:58:06", "name": "[1/3] fuse4fs: configure iomap when running as a service", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/502089/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2230315/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2230315/checks/", "tags": {}, "headers": { "Return-Path": "\n <SRS0=Gs+1=C4=vger.kernel.org=linux-ext4+bounces-16210-patchwork-incoming=ozlabs.org@ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-ext4@vger.kernel.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "patchwork-incoming@ozlabs.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=GF9Oy7D6;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=150.107.74.76; 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a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1777474687; c=relaxed/simple;\n\tbh=F8BRLl0qdY598FN7zilACacz0SD2KJpjudkm9dTB+0M=;\n\th=Date:Subject:From:To:Cc:Message-ID:In-Reply-To:References:\n\t MIME-Version:Content-Type;\n b=Fs6ygS+VQP2m1QBwPn9I5z+8av00UtTdKXvvYppaxxzLzl4uS3J4Z56PkqGivlQCdRo4yGc5nUa+plY7mkkjnUgJUDQ7As00XfWpvYngYlOv1osCW/BTK1uIMy/bdxWUWJ2IlueAUGonBCNCk06dX5dAGUh+TFj8XSbHxDNfdx4=" ], "ARC-Authentication-Results": [ "i=2; gandalf.ozlabs.org;\n dmarc=pass (p=quarantine dis=none) header.from=kernel.org;\n dkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=GF9Oy7D6; dkim-atps=neutral;\n spf=pass (client-ip=172.232.135.74; helo=sto.lore.kernel.org;\n envelope-from=linux-ext4+bounces-16210-patchwork-incoming=ozlabs.org@vger.kernel.org;\n receiver=ozlabs.org) smtp.mailfrom=vger.kernel.org", "i=1; smtp.subspace.kernel.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=GF9Oy7D6; arc=none smtp.client-ip=10.30.226.201" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1777474686;\n\tbh=F8BRLl0qdY598FN7zilACacz0SD2KJpjudkm9dTB+0M=;\n\th=Date:Subject:From:To:Cc:In-Reply-To:References:From;\n\tb=GF9Oy7D63hIfZfFBjhJNYlpK/Q93uK9JJTFnC/GBu6E2CS+V4RbzmJ9jvGnB7m34J\n\t OlUkAksTkhWuiJj7n4PLZRUtVtGHw5gFcmqqu7JAo5vrJKSZ9iVCsun8eag3Bq1Uyg\n\t Hzoa7P26WWXtKSMhL1G88IuFA3UW/jx/zoyv6+ekUus2ZCSRy35OLR/Q0BugABBhsT\n\t 8iV9k7IVpOipu1pkMxYOHq2SX98VYaojf9DRyByLch7BirQJoWab9sid3KPpMAAis0\n\t nOVQRwBPthyXSQ73a9MkCrrvUDw5PXUtgh/XdR7C1uf/IwIFYGxnYM1R5wUymqwxnO\n\t GrSn+1Vb9UmuA==", "Date": "Wed, 29 Apr 2026 07:58:06 -0700", "Subject": "[PATCH 2/3] fuse4fs: set iomap backing device blocksize", "From": "\"Darrick J. Wong\" <djwong@kernel.org>", "To": "tytso@mit.edu", "Cc": "bernd@bsbernd.com, miklos@szeredi.hu, linux-ext4@vger.kernel.org,\n neal@gompa.dev, linux-fsdevel@vger.kernel.org, fuse-devel@lists.linux.dev,\n joannelkoong@gmail.com", "Message-ID": "<177747215062.4109882.16836775067142129229.stgit@frogsfrogsfrogs>", "In-Reply-To": "<177747215017.4109882.630706253054166885.stgit@frogsfrogsfrogs>", "References": "<177747215017.4109882.630706253054166885.stgit@frogsfrogsfrogs>", "Precedence": "bulk", "X-Mailing-List": "linux-ext4@vger.kernel.org", "List-Id": "<linux-ext4.vger.kernel.org>", "List-Subscribe": "<mailto:linux-ext4+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-ext4+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "X-Spam-Status": "No, score=-1.2 required=5.0 tests=ARC_SIGNED,ARC_VALID,\n\tDKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_PASS,\n\tMAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=disabled\n\tversion=4.0.1", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on gandalf.ozlabs.org" }, "content": "From: Darrick J. Wong <djwong@kernel.org>\n\nIf we're running as an unprivileged iomap fuse server, we must ask the\nkernel to set the blocksize of the block device.\n\nSigned-off-by: \"Darrick J. Wong\" <djwong@kernel.org>\n---\n fuse4fs/fuse4fs.c | 42 ++++++++++++++++++++++++++++++++----------\n 1 file changed, 32 insertions(+), 10 deletions(-)", "diff": "diff --git a/fuse4fs/fuse4fs.c b/fuse4fs/fuse4fs.c\nindex d7de2e94a7e536..e4338722e88e73 100644\n--- a/fuse4fs/fuse4fs.c\n+++ b/fuse4fs/fuse4fs.c\n@@ -1610,10 +1610,27 @@ static int fuse4fs_service_configure_iomap(struct fuse4fs *ff)\n \n \treturn 0;\n }\n+\n+int fuse4fs_service_set_bdev_blocksize(struct fuse4fs *ff, int dev_index)\n+{\n+\tint ret;\n+\n+\tret = fuse_lowlevel_iomap_set_blocksize(ff->fuse, dev_index,\n+\t\t\t\t\t\tff->fs->blocksize);\n+\tif (ret) {\n+\t\terr_printf(ff, \"%s: cannot set blocksize %u: %s\\n\", __func__,\n+\t\t\t ff->fs->blocksize, strerror(-ret));\n+\t\treturn -EIO;\n+\t}\n+\n+\treturn 0;\n+}\n #else\n # define fuse4fs_service_configure_iomap(...)\t(EOPNOTSUPP)\n+# define fuse4fs_service_set_bdev_blocksize(...) (EOPNOTSUPP)\n #endif\n \n+\n static errcode_t fuse4fs_acquire_lockfile(struct fuse4fs *ff)\n {\n \tchar *resolved;\n@@ -7254,21 +7271,19 @@ static int fuse4fs_iomap_config_devices(struct fuse4fs *ff)\n {\n \terrcode_t err;\n \tint fd;\n+\tint dev_index;\n \tint ret;\n \n \terr = io_channel_get_fd(ff->fs->io, &fd);\n \tif (err)\n \t\treturn translate_error(ff->fs, 0, err);\n \n-\tret = fuse4fs_set_bdev_blocksize(ff, fd);\n-\tif (ret)\n-\t\treturn ret;\n-\n-\tret = fuse_lowlevel_iomap_device_add(ff->fuse, fd, 0);\n-\tif (ret < 0) {\n-\t\tdbg_printf(ff, \"%s: cannot register iomap dev fd=%d, err=%d\\n\",\n-\t\t\t __func__, fd, -ret);\n-\t\treturn translate_error(ff->fs, 0, -ret);\n+\tdev_index = fuse_lowlevel_iomap_device_add(ff->fuse, fd, 0);\n+\tif (dev_index < 0) {\n+\t\tret = -dev_index;\n+\t\tdbg_printf(ff, \"%s: cannot register iomap dev fd=%d: %s\\n\",\n+\t\t\t __func__, fd, strerror(ret));\n+\t\treturn translate_error(ff->fs, 0, ret);\n \t}\n \n \tdbg_printf(ff, \"%s: registered iomap dev fd=%d iomap_dev=%u\\n\",\n@@ -7276,7 +7291,14 @@ static int fuse4fs_iomap_config_devices(struct fuse4fs *ff)\n \n \tfuse4fs_configure_atomic_write(ff, fd);\n \n-\tff->iomap_dev = ret;\n+\tif (fuse4fs_is_service(ff))\n+\t\tret = fuse4fs_service_set_bdev_blocksize(ff, dev_index);\n+\telse\n+\t\tret = fuse4fs_set_bdev_blocksize(ff, fd);\n+\tif (ret)\n+\t\treturn ret;\n+\n+\tff->iomap_dev = dev_index;\n \treturn 0;\n }\n \n", "prefixes": [ "2/3" ] }