From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f42.google.com (mail-wr1-f42.google.com [209.85.221.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9B9E93C660E for ; Mon, 13 Apr 2026 12:24:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.42 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776083062; cv=none; b=ggWFjf1Bf0lIuwSHN0iN8aWXgK25n45CjQkCTqJ5HsnCNVpcxYt6JltC8vC5CwkGgS9u80mD/1IjXu94ztT/YDJEySn5Fjvb7cqbMR+bbDsvHLZXlbxVn+aUUF1yryoeaJxp6FvdLyV5gaydHRopihlNCm5zmv+oXX9ZICGaCCU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776083062; c=relaxed/simple; bh=qpVfP6Csx5soTuewK6VWgGUXVpdq19dG8VZ9f4tI5kg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=pf/eYvHfVQuMZu0NuCFd1CkTquRHGfuIAmKr5VIClKmQe8funZnHuFXdxTE2H/wbfhbYyhVDERS6CswLzv6+4pjc/GySY03uCVpIY4qc/T/PZ4CxIfavgtV3XgNN4+96DtKjEwmDvcX07IbXOEQWozAv+DHGB6QdhP3E68BSUtw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=hackers.camp; spf=pass smtp.mailfrom=gmail.com; arc=none smtp.client-ip=209.85.221.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=hackers.camp Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-wr1-f42.google.com with SMTP id ffacd0b85a97d-43d7b879691so64765f8f.1 for ; Mon, 13 Apr 2026 05:24:20 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776083059; x=1776687859; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=1vodrXYeOranijZ6che0xv62AVq6wH7ifjeewL0qmt8=; b=MAvdRc72c8OzNEZrsuWUGjcc/THVGir/7+69i6NVZsV6gkzYa0t67gg2Cpt/BOjpqx 0cLQH704Ziih0t7hCx9GDwvzZwEjgB1mr378bE9hy4pJV9QYMcXi64RQ7RiBBALIu3et jHURI5dHJvRHBRaI1YNFXjrGM7Ep15vMImOHhTLKhXPZLS1e60ThLqO6GVO1iY6+vOMD ANyvBGP2qTGgzgPc1/goDH0zpZu04BmpU8seLzDR5Fr8sMeZ2S5kYu9AlmLF0q+1g+v+ OQqM6utZexzXIenwi6AYq6562QgXSHomcp1eFeJXIkoPx1L+4hiyPL58cwPZ1h1I4Woj P0dw== X-Gm-Message-State: AOJu0Yxdeqioti8XiieNwvelgCPJSL1SueEVaZMIaX4MZJl/Z/UnetLJ Q2QRtewdQb5cSZ9+BCgDyHIWAYF3jUKFXLVdHIG6iCovryceb3KtcNJa X-Gm-Gg: AeBDievpAx0AjvtbE9FCP/4W58UtcbBP9DxyJiyU0ZM8tOHN6SFkticO5TZAWZi4ru9 7tjbRg09ByV9/y1zcZazYOTHp+PyXHWLdQpReBkGA8x4ky4vXsamZ2Gpgps6ZWWhhIR8WQBaBIi oYA2pSmGZBmOcxXFekmn8W0BcwHV44uFqLQ+9JxNJ/tethT+qqO8GVqsyjgIPfLtbhmd+jVKxiG vOOKIWpQNiYYgh8Fj/tdnThQTkYS365BmABwk0oMdkh3MV4t50j9M1Ed5yzKS2370iD57QwU71y 1LOmWN+z+LkUScj341TD/JVlJAZr9ewCpIWuR5eYuXe7BsC1koyBn+Fw+UaoYqmizvxXajq32kD MYfpoyE28F0lGVpbgzlm23b21Pj/y6H2MU+vynD6oR7SwDGgHinVVxp3+XayLAiqNYmYZ22+szA sob468XSznAaYFOkKrkfkeTyr/oCPX0386DaSfK4bDVAduNNrwyaCRjNlPio66NRJmMA== X-Received: by 2002:a05:600c:4709:b0:488:ae6c:42cd with SMTP id 5b1f17b1804b1-488d6771b5cmr75264145e9.0.1776083058917; Mon, 13 Apr 2026 05:24:18 -0700 (PDT) Received: from spartian-1.home ([2a01:cb1c:784:2f00:708:2805:7128:7a75]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-488d532ed4dsm278260915e9.4.2026.04.13.05.24.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Apr 2026 05:24:18 -0700 (PDT) From: Aurelien DESBRIERES To: linux-fsdevel@vger.kernel.org Cc: linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk, brauner@kernel.org, aurelien@hackers.camp Subject: [RFC PATCH 05/10] ftrfs: add file operations Date: Mon, 13 Apr 2026 16:23:51 +0200 Message-ID: <20260413142357.515792-6-aurelien@hackers.camp> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260413142357.515792-1-aurelien@hackers.camp> References: <20260413142357.515792-1-aurelien@hackers.camp> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Aurélien DESBRIERES Implement basic file read/write using generic VFS helpers: - ftrfs_file_operations: generic_file_read_iter, generic_file_write_iter - ftrfs_file_inode_operations: getattr via simple_getattr - ftrfs_address_space_operations: readpage via block_read_full_folio, writepage via block_write_full_folio, bmap via generic_block_bmap Read path delegates to the page cache via generic helpers. Write path is wired but depends on the block allocator (alloc.c) and write_inode (namei.c) for persistence. Signed-off-by: Aurélien DESBRIERES --- fs/ftrfs/file.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 fs/ftrfs/file.c diff --git a/fs/ftrfs/file.c b/fs/ftrfs/file.c new file mode 100644 index 000000000..ef121359b --- /dev/null +++ b/fs/ftrfs/file.c @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * FTRFS — File operations (skeleton) + * Author: roastercode - Aurelien DESBRIERES + * + * NOTE: read/write use generic_file_* for now. + * The EDAC/RS layer will intercept at the block I/O level (next iteration). + */ + +#include +#include +#include "ftrfs.h" + +const struct file_operations ftrfs_file_operations = { + .llseek = generic_file_llseek, + .read_iter = generic_file_read_iter, + .write_iter = generic_file_write_iter, + .mmap = generic_file_mmap, + .fsync = generic_file_fsync, + .splice_read = filemap_splice_read, +}; + +const struct inode_operations ftrfs_file_inode_operations = { + .getattr = simple_getattr, +}; -- 2.52.0