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GET /api/1.2/patches/2226005/?format=api
{ "id": 2226005, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2226005/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/patch/20260422021042.4157510-17-yi.zhang@huaweicloud.com/", "project": { "id": 8, "url": "http://patchwork.ozlabs.org/api/1.2/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, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260422021042.4157510-17-yi.zhang@huaweicloud.com>", "list_archive_url": null, "date": "2026-04-22T02:10:36", "name": "[v3,16/22] ext4: disable online defrag when inode using iomap buffered I/O path", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "784be29ed8befad440f50d3fa20b8c1f07bd5f46", "submitter": { "id": 85428, "url": "http://patchwork.ozlabs.org/api/1.2/people/85428/?format=api", "name": "Zhang Yi", "email": "yi.zhang@huaweicloud.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-ext4/patch/20260422021042.4157510-17-yi.zhang@huaweicloud.com/mbox/", "series": [ { "id": 500911, "url": "http://patchwork.ozlabs.org/api/1.2/series/500911/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/list/?series=500911", "date": "2026-04-22T02:10:23", "name": "ext4: use iomap for regular file's buffered I/O path", "version": 3, "mbox": "http://patchwork.ozlabs.org/series/500911/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2226005/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2226005/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <SRS0=qfmj=CV=vger.kernel.org=linux-ext4+bounces-15974-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 spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=2404:9400:2221:ea00::3; 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a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1776824225; c=relaxed/simple;\n\tbh=TR3wXiUMaCqs+/Baqxnmc8l4eBzCYOhR1cr0EWSBFS0=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=DR+Peeq1IwG1YKc4rHxUztkSssUvrOxI/dvuYWEAN3S644iczifHRg80nihO0dzB1CbqhsoESNQCyir3GlqsSKX1JnNr1uKTQJ/B4XLliV8ZbD444k1mpZRSyceLowgHZELWpG4jyPKXc6maopSvKxDg5/FoWWUU1L9wRvXWIZI=" ], "ARC-Authentication-Results": [ "i=2; gandalf.ozlabs.org;\n dmarc=none (p=none dis=none) header.from=huaweicloud.com;\n spf=pass (client-ip=104.64.211.4; helo=sin.lore.kernel.org;\n envelope-from=linux-ext4+bounces-15974-patchwork-incoming=ozlabs.org@vger.kernel.org;\n receiver=ozlabs.org) smtp.mailfrom=vger.kernel.org", "i=1; smtp.subspace.kernel.org;\n dmarc=none (p=none dis=none) header.from=huaweicloud.com;\n spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.56" ], "From": "Zhang Yi <yi.zhang@huaweicloud.com>", "To": "linux-ext4@vger.kernel.org,\n\tlinux-fsdevel@vger.kernel.org", "Cc": "linux-kernel@vger.kernel.org,\n\ttytso@mit.edu,\n\tadilger.kernel@dilger.ca,\n\tlibaokun@linux.alibaba.com,\n\tjack@suse.cz,\n\tojaswin@linux.ibm.com,\n\tritesh.list@gmail.com,\n\tdjwong@kernel.org,\n\thch@infradead.org,\n\tyi.zhang@huawei.com,\n\tyi.zhang@huaweicloud.com,\n\tyizhang089@gmail.com,\n\tyangerkun@huawei.com,\n\tyukuai@fnnas.com", "Subject": "[PATCH v3 16/22] ext4: disable online defrag when inode using iomap\n buffered I/O path", "Date": "Wed, 22 Apr 2026 10:10:36 +0800", "Message-ID": "<20260422021042.4157510-17-yi.zhang@huaweicloud.com>", "X-Mailer": "git-send-email 2.52.0", "In-Reply-To": "<20260422021042.4157510-1-yi.zhang@huaweicloud.com>", "References": "<20260422021042.4157510-1-yi.zhang@huaweicloud.com>", "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-Transfer-Encoding": "8bit", "X-CM-TRANSID": "_Ch0CgB3JL6PL+hpqkgUBQ--.2635S20", "X-Coremail-Antispam": "1UD129KBjvdXoW7Jw47Gw4Uur15Ary8Jr4xJFb_yoWktwc_ta\n\t97Jry8Ww1YyFsa9398Jas8KrnYkF48GFn5WFZ5Gr18uw1UZ395Gr1vkry2vr98Wr1jqrZ8\n\tCFn7Jr1rKry2gjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT\n\t9fnUUIcSsGvfJTRUUUbvAFF20E14v26rWj6s0DM7CY07I20VC2zVCF04k26cxKx2IYs7xG\n\t6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI8067AKxVWUAVCq3wA2048vs2\n\tIY020Ec7CjxVAFwI0_Xr0E3s1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2x7M28E\n\tF7xvwVC0I7IYx2IY67AKxVWDJVCq3wA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVW8Jr0_Cr\n\t1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s0D\n\tM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjx\n\tv20xvE14v26r106r15McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr1l\n\tF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I0E8cxan2\n\tIY04v7MxkF7I0En4kS14v26r1q6r43MxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY\n\t6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17\n\tCEb7AF67AKxVW8ZVWrXwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r4j6ryUMIIF\n\t0xvE2Ix0cI8IcVCY1x0267AKxVW8Jr0_Cr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCw\n\tCI42IY6I8E87Iv67AKxVW8JVWxJwCI42IY6I8E87Iv6xkF7I0E14v26r4UJVWxJrUvcSsG\n\tvfC2KfnxnUUI43ZEXa7VU1zpBDUUUUU==", "X-CM-SenderInfo": "d1lo6xhdqjqx5xdzvxpfor3voofrz/", "X-Spam-Status": "No, score=-1.1 required=5.0 tests=ARC_SIGNED,ARC_VALID,\n\tDMARC_MISSING,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,\n\tSPF_HELO_NONE,SPF_PASS autolearn=disabled version=4.0.1", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on gandalf.ozlabs.org" }, "content": "From: Zhang Yi <yi.zhang@huawei.com>\n\nOnline defragmentation does not currently support inodes using the\niomap buffered I/O path, as it still relies on buffer_head for the\nmanagement of sub-folio blocks and on the data=ordered mode for data\nconsistency.\n\nSigned-off-by: Zhang Yi <yi.zhang@huawei.com>\n---\n fs/ext4/move_extent.c | 11 +++++++++++\n 1 file changed, 11 insertions(+)", "diff": "diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c\nindex 3329b7ad5dbd..f707a1096544 100644\n--- a/fs/ext4/move_extent.c\n+++ b/fs/ext4/move_extent.c\n@@ -476,6 +476,17 @@ static int mext_check_validity(struct inode *orig_inode,\n \t\treturn -EOPNOTSUPP;\n \t}\n \n+\t/*\n+\t * TODO: support online defrag for inodes that using the buffered\n+\t * I/O iomap path.\n+\t */\n+\tif (ext4_inode_buffered_iomap(orig_inode) ||\n+\t ext4_inode_buffered_iomap(donor_inode)) {\n+\t\text4_msg(sb, KERN_ERR,\n+\t\t\t \"Online defrag not supported for inode with iomap buffered IO path\");\n+\t\treturn -EOPNOTSUPP;\n+\t}\n+\n \tif (donor_inode->i_mode & (S_ISUID|S_ISGID)) {\n \t\text4_debug(\"ext4 move extent: suid or sgid is set to donor file [ino:orig %llu, donor %llu]\\n\",\n \t\t\t orig_inode->i_ino, donor_inode->i_ino);\n", "prefixes": [ "v3", "16/22" ] }