From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B3DF0296BA9; Tue, 17 Feb 2026 23:20:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771370449; cv=none; b=OPdROF1OfmKMXpqF8oUrtVLsCP1XeLpA2FYAXVrOLRCFR0sqCE8j4+HqYAtIHrOffj7Eg4+4JHjGJ18j84nZ5WJOVoSs40K6U5zs3+NFVvmqWt3ARYfxBIU8S+Ft9lrqW6qQ3R6i7rZCGHSyU2qeezP3WKBT++jk5YcQL+cCOuI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771370449; c=relaxed/simple; bh=qQBvMwYz4tTYdcpeO/q2O6IB2uqWdtO9oIMWTNGDwhs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pkfYFoIpO6RU3VHSE5e+lWD7xp7PbzLJQqdMYUzAJEhZeb7ZhnLduEvXm5pEcr9z904dO0jtEQlq7k/LAPKQe9/mHiiRCQD8vldZvMNcsqxIaUhovhulfy+5XV6NNhj4Kc2NH4oyIFiwPqbz+38k43eMVBTA9HBqx7+NXxM6kIw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=alPWjTK9; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="alPWjTK9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DE3E7C19421; Tue, 17 Feb 2026 23:20:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771370448; bh=qQBvMwYz4tTYdcpeO/q2O6IB2uqWdtO9oIMWTNGDwhs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=alPWjTK95IRIPDze/frXYtjcbUV9gA7Gi8CPXKaViM+VZNOjntiwkGs/tCiu44kQD EWKmx+e13/DTpeAtuMSQIXQmvlst8rAIJPZymJspOoPybMv8QzGJJaMXpnr0nk5dgX mg4KU9uLnirivaWaHADCgHqQhuzj+peclVEQ6aBAnqhoUOVSSPqVtZEQe+fLLruvXw qybnO0ryZ7Pr5Dj8tPz/XV4JII1/1iRlNLoClDZe8+BvFzjwEFBEGFM3qMxZirz6F4 3YFsIIF5ZTbxpTls3gRyTwq1JlrHdgWAVaLF70vPO0JMJqdq/KmEKp8AvhkmVwLX/G 7l/Bt6J6mpxAw== From: Andrey Albershteyn To: linux-xfs@vger.kernel.org, fsverity@lists.linux.dev, linux-fsdevel@vger.kernel.org, ebiggers@kernel.org Cc: Andrey Albershteyn , hch@lst.de, djwong@kernel.org Subject: [PATCH v3 07/35] iomap: introduce IOMAP_F_FSVERITY Date: Wed, 18 Feb 2026 00:19:07 +0100 Message-ID: <20260217231937.1183679-8-aalbersh@kernel.org> X-Mailer: git-send-email 2.51.2 In-Reply-To: <20260217231937.1183679-1-aalbersh@kernel.org> References: <20260217231937.1183679-1-aalbersh@kernel.org> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Flag to indicate to iomap that write is happening beyond EOF and no isize checks/update is needed. Signed-off-by: Andrey Albershteyn --- fs/iomap/buffered-io.c | 8 +++++--- fs/iomap/trace.h | 3 ++- include/linux/iomap.h | 5 +++++ 3 files changed, 12 insertions(+), 4 deletions(-) diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index ee7b845f5bc8..4cf9d0991dc1 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -533,7 +533,8 @@ static int iomap_read_folio_iter(struct iomap_iter *iter, return 0; /* zero post-eof blocks as the page may be mapped */ - if (iomap_block_needs_zeroing(iter, pos)) { + if (iomap_block_needs_zeroing(iter, pos) && + !(iomap->flags & IOMAP_F_FSVERITY)) { folio_zero_range(folio, poff, plen); iomap_set_range_uptodate(folio, poff, plen); } else { @@ -1130,13 +1131,14 @@ static int iomap_write_iter(struct iomap_iter *iter, struct iov_iter *i, * unlock and release the folio. */ old_size = iter->inode->i_size; - if (pos + written > old_size) { + if (pos + written > old_size && + !(iter->iomap.flags & IOMAP_F_FSVERITY)) { i_size_write(iter->inode, pos + written); iter->iomap.flags |= IOMAP_F_SIZE_CHANGED; } __iomap_put_folio(iter, write_ops, written, folio); - if (old_size < pos) + if (old_size < pos && !(iter->iomap.flags & IOMAP_F_FSVERITY)) pagecache_isize_extended(iter->inode, old_size, pos); cond_resched(); diff --git a/fs/iomap/trace.h b/fs/iomap/trace.h index 532787277b16..5252051cc137 100644 --- a/fs/iomap/trace.h +++ b/fs/iomap/trace.h @@ -118,7 +118,8 @@ DEFINE_RANGE_EVENT(iomap_zero_iter); { IOMAP_F_ATOMIC_BIO, "ATOMIC_BIO" }, \ { IOMAP_F_PRIVATE, "PRIVATE" }, \ { IOMAP_F_SIZE_CHANGED, "SIZE_CHANGED" }, \ - { IOMAP_F_STALE, "STALE" } + { IOMAP_F_STALE, "STALE" }, \ + { IOMAP_F_FSVERITY, "FSVERITY" } #define IOMAP_DIO_STRINGS \ diff --git a/include/linux/iomap.h b/include/linux/iomap.h index f0e3ed8ad6a6..94cf6241b37f 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -87,6 +87,11 @@ struct vm_fault; #define IOMAP_F_INTEGRITY 0 #endif /* CONFIG_BLK_DEV_INTEGRITY */ +/* + * IO happens beyound inode EOF, fsverity metadata is stored there + */ +#define IOMAP_F_FSVERITY (1U << 10) + /* * Flag reserved for file system specific usage */ -- 2.51.2