{"id":2221461,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2221461/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/patch/20260409131404.1545834-14-aalbersh@kernel.org/","project":{"id":8,"url":"http://patchwork.ozlabs.org/api/1.2/projects/8/?format=json","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":"<20260409131404.1545834-14-aalbersh@kernel.org>","list_archive_url":null,"date":"2026-04-09T13:13:45","name":"[v7,13/22] xfs: disable direct read path for fs-verity files","commit_ref":null,"pull_url":null,"state":"not-applicable","archived":false,"hash":"7341b7348870d68f905cfa604e2324bc63991579","submitter":{"id":92821,"url":"http://patchwork.ozlabs.org/api/1.2/people/92821/?format=json","name":"Andrey Albershteyn","email":"aalbersh@kernel.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-ext4/patch/20260409131404.1545834-14-aalbersh@kernel.org/mbox/","series":[{"id":499292,"url":"http://patchwork.ozlabs.org/api/1.2/series/499292/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/list/?series=499292","date":"2026-04-09T13:13:34","name":"fs-verity support for XFS with post EOF merkle tree","version":7,"mbox":"http://patchwork.ozlabs.org/series/499292/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2221461/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2221461/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","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=WJ4s8HyY;\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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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=1775740489;\n\tbh=l2TuE4Dq3W00QnGqh26ac7WtX/eqBCa3lcQ4ZM8TF1E=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=WJ4s8HyYV75KHwcaqCCKhXiuuEKo2ecMsEbRxEAJoqzJJgLXUmg/C9rnLiaPMlj0T\n\t X3ti136pw9u6p0BDwMdQJR++WswgCmum67Diyxknx6PbYLOkFgWE/AtbynCfKjh756\n\t pL3vuuwTzNKRlcEsdb97WvRKU4OMv1AOmw+IPatWEDySXM92rlbYO8mGP79MX39uMC\n\t bE6MyPcGqkUChr3/O30SA0nMgHBh2nuvs/MVWm300RdN0a44MED8JS5wKjObLmwH+m\n\t tJ+XtEfLc6StJB9YSkYZhUGi33LQ0wzfK6QcSj7MZZUjziy9dQvS9VpwxDT3jtnaIn\n\t IJMGeF1fVJnlA==","From":"Andrey Albershteyn ","To":"linux-xfs@vger.kernel.org,\n\tfsverity@lists.linux.dev,\n\tlinux-fsdevel@vger.kernel.org,\n\tebiggers@kernel.org","Cc":"Andrey Albershteyn ,\n\thch@lst.de,\n\tlinux-ext4@vger.kernel.org,\n\tlinux-f2fs-devel@lists.sourceforge.net,\n\tlinux-btrfs@vger.kernel.org,\n\tdjwong@kernel.org","Subject":"[PATCH v7 13/22] xfs: disable direct read path for fs-verity files","Date":"Thu, 9 Apr 2026 15:13:45 +0200","Message-ID":"<20260409131404.1545834-14-aalbersh@kernel.org>","X-Mailer":"git-send-email 2.51.2","In-Reply-To":"<20260409131404.1545834-1-aalbersh@kernel.org>","References":"<20260409131404.1545834-1-aalbersh@kernel.org>","Precedence":"bulk","X-Mailing-List":"linux-ext4@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","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":"The direct path is not supported on verity files. Attempts to use direct\nI/O path on such files should fall back to buffered I/O path.\n\nSigned-off-by: Darrick J. Wong \nReviewed-by: Christoph Hellwig \nSigned-off-by: Andrey Albershteyn \n---\n fs/xfs/xfs_file.c | 11 ++++++++++-\n 1 file changed, 10 insertions(+), 1 deletion(-)","diff":"diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c\nindex a980ac5196a8..6fa9835f9531 100644\n--- a/fs/xfs/xfs_file.c\n+++ b/fs/xfs/xfs_file.c\n@@ -282,7 +282,8 @@ xfs_file_dax_read(\n \tstruct kiocb\t\t*iocb,\n \tstruct iov_iter\t\t*to)\n {\n-\tstruct xfs_inode\t*ip = XFS_I(iocb->ki_filp->f_mapping->host);\n+\tstruct inode\t\t*inode = iocb->ki_filp->f_mapping->host;\n+\tstruct xfs_inode\t*ip = XFS_I(inode);\n \tssize_t\t\t\tret = 0;\n \n \ttrace_xfs_file_dax_read(iocb, to);\n@@ -333,6 +334,14 @@ xfs_file_read_iter(\n \tif (xfs_is_shutdown(mp))\n \t\treturn -EIO;\n \n+\t/*\n+\t * In case fs-verity is enabled, we also fallback to the buffered read\n+\t * from the direct read path. Therefore, IOCB_DIRECT is set and need to\n+\t * be cleared (see generic_file_read_iter())\n+\t */\n+\tif (fsverity_active(inode))\n+\t\tiocb->ki_flags &= ~IOCB_DIRECT;\n+\n \tif (IS_DAX(inode))\n \t\tret = xfs_file_dax_read(iocb, to);\n \telse if (iocb->ki_flags & IOCB_DIRECT)\n","prefixes":["v7","13/22"]}