From nobody Thu Sep 24 21:19:39 2026 Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) (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 C688D3DA7C8 for ; Sun, 20 Sep 2026 06:32:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=124.126.103.232 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789885940; cv=none; b=bQBkQBKlaYM6IxgrfwLh31NOYUmXwD5651LREr8NsEXhWlFmIR4bEBLJR53+cRz3iChMsO8hHQ00BCqxGvxrocRUDEr9N0mB9tbqSRN+AR243Yzek6gok/V0xMW6ZxBDnoixpw7qWSIW1qNTRWW0q9S6lAbRWFvxYkO4X+M1Xe8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789885940; c=relaxed/simple; bh=pAERUW8myD8CNy2U4OteOdJ/vkvuBTpnim9iNvmMlf0=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=bDsPTzjGV72+GuSFf8dJ5S3zQd7KrjEXO2jrcoSX2XzPaspHdHvK0BCv8NoHAPZdc/zzD01HoBa7EAKSV1EvqnnAXWrZBBaHJJGydhKKEvnc1KKkVjCp00K5LaTWivm8XYBa9HRMCGjE1GrKoQcUA56Q90ImDfu8rokXNa+XXBU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn; spf=pass smtp.mailfrom=kylinos.cn; arc=none smtp.client-ip=124.126.103.232 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kylinos.cn X-UUID: 014e4150b4bd11f19a56ed5b684f684d-20260920 X-CTIC-Tags: HR_CC_COUNT, HR_CC_DOMAIN_COUNT, HR_CC_NAME, HR_CC_NO_NAME, HR_CTE_8B HR_CTT_MISS, HR_DATE_H, HR_DATE_WKD, HR_DATE_ZONE, HR_FROM_NAME HR_SJ_DIGIT_LEN, HR_SJ_LANG, HR_SJ_LEN, HR_SJ_LETTER, HR_SJ_NOR_SYM HR_SJ_PHRASE, HR_SJ_PHRASE_LEN, HR_SJ_WS, HR_TO_COUNT, HR_TO_DOMAIN_COUNT HR_TO_NO_NAME, IP_TRUSTED, SRC_TRUSTED, SA_TRUSTED, SA_EXISTED SN_EXISTED, SPF_NOPASS, DKIM_NOPASS, DMARC_NOPASS, CIE_BAD CIE_GOOD, CIE_GOOD_SPF, GTI_FG_BS, GTI_RG_INFO, GTI_C_BU AMN_GOOD, ABX_MISS_RDNS X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.19,REQID:b3c004ea-2d5d-4cd1-bb14-abe007292fed,IP:10, URL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:10 X-CID-INFO: VERSION:1.3.19,REQID:b3c004ea-2d5d-4cd1-bb14-abe007292fed,IP:10,UR L:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION:r elease,TS:10 X-CID-META: VersionHash:7db8b62,CLOUDID:a97caa48f5a694a96ff053bb118d16ee,BulkI D:260920143212CE1VE3T0,BulkQuantity:0,SF:17|19|38|66|78|102|127|850|865|89 8,TC:nil,Content:0|15|50|99|100|102|158,EDM:-3,IP:-2,URL:0,File:nil,RT:nil ,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,B RR:0,BRE:0,ARC:0 X-CID-BVR: 2,SSN|SDN X-CID-BAS: 2,SSN|SDN,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_FAS,TF_CID_SPAM_FSD X-CID-RHF: D41D8CD98F00B204E9800998ECF8427E X-UUID: 014e4150b4bd11f19a56ed5b684f684d-20260920 X-User: wangxuewen@kylinos.cn Received: from localhost.localdomain [(223.70.159.239)] by mailgw.kylinos.cn (envelope-from ) (Generic MTA with TLSv1.3 TLS_AES_256_GCM_SHA384 256/256) with ESMTP id 1462341643; Sun, 20 Sep 2026 14:32:08 +0800 From: Xuewen Wang To: linkinjeon@kernel.org, hyc.lee@gmail.com Cc: ntfs@lists.linux.dev, linux-kernel@vger.kernel.org, Xuewen Wang , Baolin Liu Subject: [PATCH v1] ntfs: preserve the 64-bit FITRIM minimum length Date: Sun, 20 Sep 2026 14:31:53 +0800 Message-Id: <20260920063153.376958-1-wangxuewen@kylinos.cn> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The minlen member of struct fstrim_range is a 64-bit byte count, but ntfs_ioctl_fitrim() uses max_t(u32, ...) to compare it with the device's discard granularity. This truncates the requested minimum length before passing it to ntfs_trim_fs(). For example, a minimum length of 4 GiB is reduced to the discard granularity, allowing smaller free extents to be discarded. The truncated minimum length is also copied back to userspace. Use max_t(u64, ...) to preserve the requested minimum length. The bitmap scan already compares the aligned extent length against range->minlen using 64-bit values. Fixes: 9c87959601e8 ("ntfs: update file operations") Signed-off-by: Xuewen Wang Reviewed-by: Baolin Liu Reviewed-by: Hyunchul Lee --- fs/ntfs/file.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c index 8164326b7812..e315fed4d13b 100644 --- a/fs/ntfs/file.c +++ b/fs/ntfs/file.c @@ -866,7 +866,7 @@ static int ntfs_ioctl_fitrim(struct ntfs_volume *vol, u= nsigned long arg) if (range.len < vol->cluster_size) return -EINVAL; =20 - range.minlen =3D max_t(u32, range.minlen, bdev_discard_granularity(dev)); + range.minlen =3D max_t(u64, range.minlen, bdev_discard_granularity(dev)); =20 err =3D ntfs_trim_fs(vol, &range); if (err < 0) --=20 2.25.1