From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CC538C2D0CD for ; Wed, 21 May 2025 06:24:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.sourceforge.net; s=beta; h=Content-Transfer-Encoding:Content-Type:Cc: Reply-To:From:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Subject:MIME-Version:Message-ID:Date:To:Sender: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=ZrnmBo4UoVGkWPOrNTj1V45+Md3mJ0mla0WNghzh1C8=; b=aecP7IbE0LWmmLus6Wq98JCWNl HUZ6na75tsB+FbTYJTwL11fSo83Z6qTld1SoghfuNi+qdK03x7uW9XnX9KeLtkiTCzGJwvDUZyCNL hzqDl+9WQu9rNoRyTptgq8b/sXIAlyK+0RGX+VaL70x9W5i8C2bFWKoGLLS3nx+Ab0js=; Received: from [127.0.0.1] (helo=sfs-ml-2.v29.lw.sourceforge.com) by sfs-ml-2.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1uHcsN-00082g-4l; Wed, 21 May 2025 06:24:27 +0000 Received: from [172.30.29.66] (helo=mx.sourceforge.net) by sfs-ml-2.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1uHcsM-00082V-A8 for linux-f2fs-devel@lists.sourceforge.net; Wed, 21 May 2025 06:24:26 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:Content-Type:MIME-Version :Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=pkMd0NFhYwDaRDPl9EWvOWOQ7L/j0BHbSCWFwcWhjBc=; b=EiMDUX6qWBMvegJ74N/Wtrj9pw /08zqEPqb8iLsUq26wtjXhh3F8d13z2aVaz8PcykP2jPxhklZbqUooZqhvb3/Rtqp3mrMdhm+yyWE W7bIN1wb8mi8Isiubgtt8iLsqEK58rlEiX7gHD9IioIRjZ0D7jvpOgcQ7szYResEGNAo=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:Content-Type:MIME-Version:Message-ID:Date: Subject:Cc:To:From:Sender:Reply-To:Content-ID:Content-Description:Resent-Date :Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Id:List-Help:List-Unsubscribe:List-Subscribe:List-Post: List-Owner:List-Archive; bh=pkMd0NFhYwDaRDPl9EWvOWOQ7L/j0BHbSCWFwcWhjBc=; b=A sZHrykm3L4Ylk5Hcl2natZBCsvxZGYw+4/VYHREHqWBmCZ7D+vyQoiAxY6e1W89/HPn6ZDAKFRp+j LfOZ5+OpP1he7hIAPAR7Jc1A9/BHayuz32dPGeTevMJomk33CuQMaTCzxY1QkdDtLeEJrR9puU1qN qX22mWaSAzujI/LQ=; Received: from sea.source.kernel.org ([172.234.252.31]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1uHcsL-0005g3-H3 for linux-f2fs-devel@lists.sourceforge.net; Wed, 21 May 2025 06:24:26 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 154E64A430 for ; Wed, 21 May 2025 06:24:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D1B82C4CEE4; Wed, 21 May 2025 06:24:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1747808655; bh=KWJtTLrAUMHCEg+eR7U5ahOPzGqD4xEpJn0kY1SlmNY=; h=From:To:Cc:Subject:Date:From; b=Ktb1rYQd6oqVdANjHbI9HrRY0EBKiMlLNQnyIkvcJzQtjwFpcZzjiedq768eksrvi eFH2OihsH8OACNtzpD9n84LZMxjyImDTK/BPm193X0y7Z746frRDi6+W6U7KqacFVY w2aCtpKxHv4Xymo4eYQkzVqFn85L4XGL1Z8MY7hi2mvy60WRhnkcZBP3qb0HTHaicY kQxP0GPUHyojlaq4HDjsYqdAOYITmOxyO/i7eCVkon1jDfZF49lqSYUN2MQCkxkNxK 3L7eTOWpDmdU/L+mECOi14AN25Vy+KQ9gQwKMq1n+ellAz8TRLhdHv5EqBFCy0EbB8 mi8tpuLXWwDGA== To: jaegeuk@kernel.org Date: Wed, 21 May 2025 14:24:03 +0800 Message-ID: <20250521062403.742048-1-chao@kernel.org> X-Mailer: git-send-email 2.49.0.1143.g0be31eac6b-goog MIME-Version: 1.0 X-Headers-End: 1uHcsL-0005g3-H3 Subject: [f2fs-dev] [PATCH] f2fs: fix to zero post-eof page X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Chao Yu via Linux-f2fs-devel Reply-To: Chao Yu Cc: stable@kernel.org, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net ZnN0ZXN0IHJlcG9ydHMgYSBmMmZzIGJ1ZzoKCmdlbmVyaWMvMzYzIDQycyAuLi4gW2ZhaWxlZCwg ZXhpdCBzdGF0dXMgMV0tIG91dHB1dCBtaXNtYXRjaCAoc2VlIC9zaGFyZS9naXQvZnN0ZXN0cy9y ZXN1bHRzLy9nZW5lcmljLzM2My5vdXQuYmFkKQogICAgLS0tIHRlc3RzL2dlbmVyaWMvMzYzLm91 dCAgIDIwMjUtMDEtMTIgMjE6NTc6NDAuMjcxNDQwNTQyICswODAwCiAgICArKysgL3NoYXJlL2dp dC9mc3Rlc3RzL3Jlc3VsdHMvL2dlbmVyaWMvMzYzLm91dC5iYWQgMjAyNS0wNS0xOSAxOTo1NTo1 OC4wMDAwMDAwMDAgKzA4MDAKICAgIEBAIC0xLDIgKzEsNzggQEAKICAgICBRQSBvdXRwdXQgY3Jl YXRlZCBieSAzNjMKICAgICBmc3ggLXEgLVMgMCAtZSAxIC1OIDEwMDAwMAogICAgK1JFQUQgQkFE IERBVEE6IG9mZnNldCA9IDB4ZDZmYiwgc2l6ZSA9IDB4ZjA0NCwgZm5hbWUgPSAvbW50L2YyZnMv anVuawogICAgK09GRlNFVCAgICAgIEdPT0QgICAgQkFEICAgICBSQU5HRQogICAgKzB4MTU0MGQg ICAgIDB4MDAwMCAgMHgyYTI1ICAweDAKICAgICtvcGVyYXRpb24jIChtb2QgMjU2KSBmb3IgdGhl IGJhZCBkYXRhIG1heSBiZSAzNwogICAgKzB4MTU0MGUgICAgIDB4MDAwMCAgMHgyNTI3ICAweDEK ICAgIC4uLgogICAgKFJ1biAnZGlmZiAtdSAvc2hhcmUvZ2l0L2ZzdGVzdHMvdGVzdHMvZ2VuZXJp Yy8zNjMub3V0IC9zaGFyZS9naXQvZnN0ZXN0cy9yZXN1bHRzLy9nZW5lcmljLzM2My5vdXQuYmFk JyAgdG8gc2VlIHRoZSBlbnRpcmUgZGlmZikKUmFuOiBnZW5lcmljLzM2MwpGYWlsdXJlczogZ2Vu ZXJpYy8zNjMKRmFpbGVkIDEgb2YgMSB0ZXN0cwoKVGhlIHJvb3QgY2F1c2UgaXMgdXNlciBjYW4g dXBkYXRlIHBvc3QtZW9mIHBhZ2UgdmlhIG1tYXAsIGhvd2V2ZXIsIGYyZnMgbWlzc2VkCnRvIHpl cm8gcG9zdC1lb2YgcGFnZSBpbiBiZWxvdyBvcGVyYXRpb25zLCBzbywgb25jZSBpdCBleHBhbmRz IGlfc2l6ZSwgdGhlbiBpdAp3aWxsIGluY2x1ZGUgZHVtbXkgZGF0YSBsb2NhdGVzIHByZXZpb3Vz IHBvc3QtZW9mIHBhZ2UsIHNvIGR1cmluZyBiZWxvdwpvcGVyYXRpb25zLCB3ZSBuZWVkIHRvIHpl cm8gcG9zdC1lb2YgcGFnZS4KCk9wZXJhdGlvbnMgd2hpY2ggY2FuIGluY2x1ZGUgZHVtbXkgZGF0 YSBhZnRlciBwcmV2aW91cyBpX3NpemUgYWZ0ZXIgZXhwYW5kaW5nCmlfc2l6ZToKLSB3cml0ZQot IG1hcHdyaXRlCi0gdHJ1bmNhdGUKLSBmYWxsb2NhdGUKICogcHJlYWxsb2NhdGUKICogemVyb19y YW5nZQogKiBpbnNlcnRfcmFuZ2UKICogY29sbGFwc2VfcmFuZ2UKLSBjbG9uZV9yYW5nZSAoZG9l c27igJl0IHN1cHBvcnQgaW4gZjJmcykKLSBjb3B5X3JhbmdlIChkb2VzbuKAmXQgc3VwcG9ydCBp biBmMmZzKQoKQ2M6IHN0YWJsZUBrZXJuZWwub3JnClNpZ25lZC1vZmYtYnk6IENoYW8gWXUgPGNo YW9Aa2VybmVsLm9yZz4KLS0tCiBmcy9mMmZzL2ZpbGUuYyB8IDI4ICsrKysrKysrKysrKysrKysr KysrKysrKysrKysKIDEgZmlsZSBjaGFuZ2VkLCAyOCBpbnNlcnRpb25zKCspCgpkaWZmIC0tZ2l0 IGEvZnMvZjJmcy9maWxlLmMgYi9mcy9mMmZzL2ZpbGUuYwppbmRleCA2YmQzZGU2NGYyYTguLmM3 YzY2ZTU5MWViYyAxMDA2NDQKLS0tIGEvZnMvZjJmcy9maWxlLmMKKysrIGIvZnMvZjJmcy9maWxl LmMKQEAgLTM1LDYgKzM1LDE3IEBACiAjaW5jbHVkZSA8dHJhY2UvZXZlbnRzL2YyZnMuaD4KICNp bmNsdWRlIDx1YXBpL2xpbnV4L2YyZnMuaD4KIAorc3RhdGljIHZvaWQgZjJmc196ZXJvX3Bvc3Rf ZW9mX3BhZ2Uoc3RydWN0IGlub2RlICppbm9kZSwgbG9mZl90IG5ld19zaXplKQoreworCWxvZmZf dCBvbGRfc2l6ZSA9IGlfc2l6ZV9yZWFkKGlub2RlKTsKKworCWlmIChvbGRfc2l6ZSA+IG5ld19z aXplKQorCQlyZXR1cm47CisKKwkvKiB6ZXJvIG9yIGRyb3AgcGFnZXMgb25seSBpbiByYW5nZSBv ZiBbb2xkX3NpemUsIG5ld19zaXplXSAqLworCXRydW5jYXRlX3BhZ2VjYWNoZShpbm9kZSwgb2xk X3NpemUpOworfQorCiBzdGF0aWMgdm1fZmF1bHRfdCBmMmZzX2ZpbGVtYXBfZmF1bHQoc3RydWN0 IHZtX2ZhdWx0ICp2bWYpCiB7CiAJc3RydWN0IGlub2RlICppbm9kZSA9IGZpbGVfaW5vZGUodm1m LT52bWEtPnZtX2ZpbGUpOwpAQCAtMTA1LDYgKzExNiw5IEBAIHN0YXRpYyB2bV9mYXVsdF90IGYy ZnNfdm1fcGFnZV9ta3dyaXRlKHN0cnVjdCB2bV9mYXVsdCAqdm1mKQogCiAJZmlsZV91cGRhdGVf dGltZSh2bWYtPnZtYS0+dm1fZmlsZSk7CiAJZmlsZW1hcF9pbnZhbGlkYXRlX2xvY2tfc2hhcmVk KGlub2RlLT5pX21hcHBpbmcpOworCisJZjJmc196ZXJvX3Bvc3RfZW9mX3BhZ2UoaW5vZGUsIChm b2xpby0+aW5kZXggKyAxKSA8PCBQQUdFX1NISUZUKTsKKwogCWZvbGlvX2xvY2soZm9saW8pOwog CWlmICh1bmxpa2VseShmb2xpby0+bWFwcGluZyAhPSBpbm9kZS0+aV9tYXBwaW5nIHx8CiAJCQlm b2xpb19wb3MoZm9saW8pID4gaV9zaXplX3JlYWQoaW5vZGUpIHx8CkBAIC0xMTA5LDYgKzExMjMs OCBAQCBpbnQgZjJmc19zZXRhdHRyKHN0cnVjdCBtbnRfaWRtYXAgKmlkbWFwLCBzdHJ1Y3QgZGVu dHJ5ICpkZW50cnksCiAJCWYyZnNfZG93bl93cml0ZSgmZmktPmlfZ2NfcndzZW1bV1JJVEVdKTsK IAkJZmlsZW1hcF9pbnZhbGlkYXRlX2xvY2soaW5vZGUtPmlfbWFwcGluZyk7CiAKKwkJaWYgKGF0 dHItPmlhX3NpemUgPiBvbGRfc2l6ZSkKKwkJCWYyZnNfemVyb19wb3N0X2VvZl9wYWdlKGlub2Rl LCBvbGRfc2l6ZSk7CiAJCXRydW5jYXRlX3NldHNpemUoaW5vZGUsIGF0dHItPmlhX3NpemUpOwog CiAJCWlmIChhdHRyLT5pYV9zaXplIDw9IG9sZF9zaXplKQpAQCAtMTIyNyw2ICsxMjQzLDggQEAg c3RhdGljIGludCBmMmZzX3B1bmNoX2hvbGUoc3RydWN0IGlub2RlICppbm9kZSwgbG9mZl90IG9m ZnNldCwgbG9mZl90IGxlbikKIAlpZiAocmV0KQogCQlyZXR1cm4gcmV0OwogCisJZjJmc196ZXJv X3Bvc3RfZW9mX3BhZ2UoaW5vZGUsIG9mZnNldCArIGxlbik7CisKIAlwZ19zdGFydCA9ICgodW5z aWduZWQgbG9uZyBsb25nKSBvZmZzZXQpID4+IFBBR0VfU0hJRlQ7CiAJcGdfZW5kID0gKCh1bnNp Z25lZCBsb25nIGxvbmcpIG9mZnNldCArIGxlbikgPj4gUEFHRV9TSElGVDsKIApAQCAtMTU0Miw2 ICsxNTYwLDggQEAgc3RhdGljIGludCBmMmZzX2NvbGxhcHNlX3JhbmdlKHN0cnVjdCBpbm9kZSAq aW5vZGUsIGxvZmZfdCBvZmZzZXQsIGxvZmZfdCBsZW4pCiAJaWYgKHJldCkKIAkJcmV0dXJuIHJl dDsKIAorCWYyZnNfemVyb19wb3N0X2VvZl9wYWdlKGlub2RlLCBvZmZzZXQgKyBsZW4pOworCiAJ cmV0ID0gZjJmc19kb19jb2xsYXBzZShpbm9kZSwgb2Zmc2V0LCBsZW4pOwogCWlmIChyZXQpCiAJ CXJldHVybiByZXQ7CkBAIC0xNjMxLDYgKzE2NTEsOCBAQCBzdGF0aWMgaW50IGYyZnNfemVyb19y YW5nZShzdHJ1Y3QgaW5vZGUgKmlub2RlLCBsb2ZmX3Qgb2Zmc2V0LCBsb2ZmX3QgbGVuLAogCWlm IChyZXQpCiAJCXJldHVybiByZXQ7CiAKKwlmMmZzX3plcm9fcG9zdF9lb2ZfcGFnZShpbm9kZSwg b2Zmc2V0ICsgbGVuKTsKKwogCXBnX3N0YXJ0ID0gKCh1bnNpZ25lZCBsb25nIGxvbmcpIG9mZnNl dCkgPj4gUEFHRV9TSElGVDsKIAlwZ19lbmQgPSAoKHVuc2lnbmVkIGxvbmcgbG9uZykgb2Zmc2V0 ICsgbGVuKSA+PiBQQUdFX1NISUZUOwogCkBAIC0xNzU0LDYgKzE3NzYsOCBAQCBzdGF0aWMgaW50 IGYyZnNfaW5zZXJ0X3JhbmdlKHN0cnVjdCBpbm9kZSAqaW5vZGUsIGxvZmZfdCBvZmZzZXQsIGxv ZmZfdCBsZW4pCiAJaWYgKHJldCkKIAkJcmV0dXJuIHJldDsKIAorCWYyZnNfemVyb19wb3N0X2Vv Zl9wYWdlKGlub2RlLCBvZmZzZXQgKyBsZW4pOworCiAJcGdfc3RhcnQgPSBvZmZzZXQgPj4gUEFH RV9TSElGVDsKIAlwZ19lbmQgPSAob2Zmc2V0ICsgbGVuKSA+PiBQQUdFX1NISUZUOwogCWRlbHRh ID0gcGdfZW5kIC0gcGdfc3RhcnQ7CkBAIC0xODE5LDYgKzE4NDMsOCBAQCBzdGF0aWMgaW50IGYy ZnNfZXhwYW5kX2lub2RlX2RhdGEoc3RydWN0IGlub2RlICppbm9kZSwgbG9mZl90IG9mZnNldCwK IAlpZiAoZXJyKQogCQlyZXR1cm4gZXJyOwogCisJZjJmc196ZXJvX3Bvc3RfZW9mX3BhZ2UoaW5v ZGUsIG9mZnNldCArIGxlbik7CisKIAlmMmZzX2JhbGFuY2VfZnMoc2JpLCB0cnVlKTsKIAogCXBn X3N0YXJ0ID0gKCh1bnNpZ25lZCBsb25nIGxvbmcpb2Zmc2V0KSA+PiBQQUdFX1NISUZUOwpAQCAt NDg2MCw2ICs0ODg2LDggQEAgc3RhdGljIHNzaXplX3QgZjJmc193cml0ZV9jaGVja3Moc3RydWN0 IGtpb2NiICppb2NiLCBzdHJ1Y3QgaW92X2l0ZXIgKmZyb20pCiAJZXJyID0gZmlsZV9tb2RpZmll ZChmaWxlKTsKIAlpZiAoZXJyKQogCQlyZXR1cm4gZXJyOworCisJZjJmc196ZXJvX3Bvc3RfZW9m X3BhZ2UoaW5vZGUsIGlvY2ItPmtpX3BvcyArIGlvdl9pdGVyX2NvdW50KGZyb20pKTsKIAlyZXR1 cm4gY291bnQ7CiB9CiAKLS0gCjIuNDkuMAoKCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fXwpMaW51eC1mMmZzLWRldmVsIG1haWxpbmcgbGlzdApMaW51eC1m MmZzLWRldmVsQGxpc3RzLnNvdXJjZWZvcmdlLm5ldApodHRwczovL2xpc3RzLnNvdXJjZWZvcmdl Lm5ldC9saXN0cy9saXN0aW5mby9saW51eC1mMmZzLWRldmVsCg== 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 7C9082356DB for ; Wed, 21 May 2025 06:24:15 +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=1747808655; cv=none; b=Y+0piYfzS5ACJVPe3p1+r4LDZwVnAFBgC121/6Vahbdag6ymMTwlRt010ISHf9q8z2ahnpUtf7aUrX2qX7ymGCKAHUbq8DpPoTQbZwsONK0+/icsOpQvMvmX7WyFJ6Wy6QNPfGZA0MF88i8gvAo+a/tJFKGnagO6rsqu5WanzbU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747808655; c=relaxed/simple; bh=KWJtTLrAUMHCEg+eR7U5ahOPzGqD4xEpJn0kY1SlmNY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=f58QOGi3GWjDwmQ3ESwuClUXKtaLSmjvW64xueghwBrmODTnrfyG19m4V3ZbD8cuKgKyg1h2rJd1G5A0kXxWQZUABmGRhs47OGLTsm5HR+JgFHukf7PBcuIuP8KMPshFTTW3Rtz9vijHJXT37J6jzY9iUobj/wxoeSNZ4EdJqPM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Ktb1rYQd; 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="Ktb1rYQd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D1B82C4CEE4; Wed, 21 May 2025 06:24:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1747808655; bh=KWJtTLrAUMHCEg+eR7U5ahOPzGqD4xEpJn0kY1SlmNY=; h=From:To:Cc:Subject:Date:From; b=Ktb1rYQd6oqVdANjHbI9HrRY0EBKiMlLNQnyIkvcJzQtjwFpcZzjiedq768eksrvi eFH2OihsH8OACNtzpD9n84LZMxjyImDTK/BPm193X0y7Z746frRDi6+W6U7KqacFVY w2aCtpKxHv4Xymo4eYQkzVqFn85L4XGL1Z8MY7hi2mvy60WRhnkcZBP3qb0HTHaicY kQxP0GPUHyojlaq4HDjsYqdAOYITmOxyO/i7eCVkon1jDfZF49lqSYUN2MQCkxkNxK 3L7eTOWpDmdU/L+mECOi14AN25Vy+KQ9gQwKMq1n+ellAz8TRLhdHv5EqBFCy0EbB8 mi8tpuLXWwDGA== From: Chao Yu To: jaegeuk@kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, Chao Yu , stable@kernel.org Subject: [PATCH] f2fs: fix to zero post-eof page Date: Wed, 21 May 2025 14:24:03 +0800 Message-ID: <20250521062403.742048-1-chao@kernel.org> X-Mailer: git-send-email 2.49.0.1143.g0be31eac6b-goog 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 fstest reports a f2fs bug: generic/363 42s ... [failed, exit status 1]- output mismatch (see /share/git/fstests/results//generic/363.out.bad) --- tests/generic/363.out 2025-01-12 21:57:40.271440542 +0800 +++ /share/git/fstests/results//generic/363.out.bad 2025-05-19 19:55:58.000000000 +0800 @@ -1,2 +1,78 @@ QA output created by 363 fsx -q -S 0 -e 1 -N 100000 +READ BAD DATA: offset = 0xd6fb, size = 0xf044, fname = /mnt/f2fs/junk +OFFSET GOOD BAD RANGE +0x1540d 0x0000 0x2a25 0x0 +operation# (mod 256) for the bad data may be 37 +0x1540e 0x0000 0x2527 0x1 ... (Run 'diff -u /share/git/fstests/tests/generic/363.out /share/git/fstests/results//generic/363.out.bad' to see the entire diff) Ran: generic/363 Failures: generic/363 Failed 1 of 1 tests The root cause is user can update post-eof page via mmap, however, f2fs missed to zero post-eof page in below operations, so, once it expands i_size, then it will include dummy data locates previous post-eof page, so during below operations, we need to zero post-eof page. Operations which can include dummy data after previous i_size after expanding i_size: - write - mapwrite - truncate - fallocate * preallocate * zero_range * insert_range * collapse_range - clone_range (doesn’t support in f2fs) - copy_range (doesn’t support in f2fs) Cc: stable@kernel.org Signed-off-by: Chao Yu --- fs/f2fs/file.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 6bd3de64f2a8..c7c66e591ebc 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -35,6 +35,17 @@ #include #include +static void f2fs_zero_post_eof_page(struct inode *inode, loff_t new_size) +{ + loff_t old_size = i_size_read(inode); + + if (old_size > new_size) + return; + + /* zero or drop pages only in range of [old_size, new_size] */ + truncate_pagecache(inode, old_size); +} + static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf) { struct inode *inode = file_inode(vmf->vma->vm_file); @@ -105,6 +116,9 @@ static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf) file_update_time(vmf->vma->vm_file); filemap_invalidate_lock_shared(inode->i_mapping); + + f2fs_zero_post_eof_page(inode, (folio->index + 1) << PAGE_SHIFT); + folio_lock(folio); if (unlikely(folio->mapping != inode->i_mapping || folio_pos(folio) > i_size_read(inode) || @@ -1109,6 +1123,8 @@ int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, f2fs_down_write(&fi->i_gc_rwsem[WRITE]); filemap_invalidate_lock(inode->i_mapping); + if (attr->ia_size > old_size) + f2fs_zero_post_eof_page(inode, old_size); truncate_setsize(inode, attr->ia_size); if (attr->ia_size <= old_size) @@ -1227,6 +1243,8 @@ static int f2fs_punch_hole(struct inode *inode, loff_t offset, loff_t len) if (ret) return ret; + f2fs_zero_post_eof_page(inode, offset + len); + pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; @@ -1542,6 +1560,8 @@ static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) if (ret) return ret; + f2fs_zero_post_eof_page(inode, offset + len); + ret = f2fs_do_collapse(inode, offset, len); if (ret) return ret; @@ -1631,6 +1651,8 @@ static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, if (ret) return ret; + f2fs_zero_post_eof_page(inode, offset + len); + pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; @@ -1754,6 +1776,8 @@ static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) if (ret) return ret; + f2fs_zero_post_eof_page(inode, offset + len); + pg_start = offset >> PAGE_SHIFT; pg_end = (offset + len) >> PAGE_SHIFT; delta = pg_end - pg_start; @@ -1819,6 +1843,8 @@ static int f2fs_expand_inode_data(struct inode *inode, loff_t offset, if (err) return err; + f2fs_zero_post_eof_page(inode, offset + len); + f2fs_balance_fs(sbi, true); pg_start = ((unsigned long long)offset) >> PAGE_SHIFT; @@ -4860,6 +4886,8 @@ static ssize_t f2fs_write_checks(struct kiocb *iocb, struct iov_iter *from) err = file_modified(file); if (err) return err; + + f2fs_zero_post_eof_page(inode, iocb->ki_pos + iov_iter_count(from)); return count; } -- 2.49.0