[{"id":3672956,"web_url":"http://patchwork.ozlabs.org/comment/3672956/","msgid":"","list_archive_url":null,"date":"2026-04-03T01:47:33","subject":"Re: [LTP] [PATCH] zram: skip exfat on systems with large page size","submitter":{"id":73704,"url":"http://patchwork.ozlabs.org/api/people/73704/","name":"Li Wang","email":"liwang@redhat.com"},"content":"> exfat requires cluster size >= sector size, but defaults to 4KB.\n> On systems with large page sizes (e.g., 64KB on POWER),\n> zram uses page size as sector size, causing mkfs.exfat to fail.\n> \n> Skip exfat filesystem creation when page size > 4096 to avoid test failure.\n\nOr, can we specify the sector size with 'mkfs.$fs -c $page_size'\nwhen detecting a large pagesize system?","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","ltp@lists.linux.it"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","ltp@picard.linux.it"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=lists.linux.it header.i=@lists.linux.it\n header.a=rsa-sha256 header.s=picard header.b=SgNKyUrv;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=UjoCIFCU;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.linux.it\n (client-ip=2001:1418:10:5::2; helo=picard.linux.it;\n envelope-from=ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it;\n receiver=patchwork.ozlabs.org)"],"Received":["from picard.linux.it (picard.linux.it [IPv6:2001:1418:10:5::2])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fn1nc3tZGz1xtJ\n\tfor ; Fri, 03 Apr 2026 12:47:47 +1100 (AEDT)","from picard.linux.it (localhost [IPv6:::1])\n\tby picard.linux.it (Postfix) with ESMTP id CB5203E54DA\n\tfor ; Fri, 3 Apr 2026 03:47:44 +0200 (CEST)","from in-2.smtp.seeweb.it (in-2.smtp.seeweb.it [217.194.8.2])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n (No client certificate requested)\n by picard.linux.it (Postfix) with ESMTPS id 575F33E16FD\n for ; Fri, 3 Apr 2026 03:47:41 +0200 (CEST)","from us-smtp-delivery-124.mimecast.com\n (us-smtp-delivery-124.mimecast.com [170.10.129.124])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest\n SHA256)\n (No client certificate requested)\n by in-2.smtp.seeweb.it (Postfix) with ESMTPS id A2E6E6023EC\n for ; Fri, 3 Apr 2026 03:47:39 +0200 (CEST)","from mail-pl1-f197.google.com (mail-pl1-f197.google.com\n [209.85.214.197]) by relay.mimecast.com with ESMTP with STARTTLS\n (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id\n us-mta-353-8WFBRRSIPvarFgfmMbBmFw-1; Thu, 02 Apr 2026 21:47:37 -0400","by mail-pl1-f197.google.com with SMTP id\n d9443c01a7336-2b0b0aae381so15316255ad.2\n for ; Thu, 02 Apr 2026 18:47:37 -0700 (PDT)","from redhat.com ([209.132.188.88]) by smtp.gmail.com with ESMTPSA id\n 41be03b00d2f7-c76c65812f4sm3919900a12.25.2026.04.02.18.47.34\n (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n Thu, 02 Apr 2026 18:47:35 -0700 (PDT)"],"DKIM-Signature":["v=1; a=rsa-sha256; c=relaxed/simple; d=lists.linux.it;\n i=@lists.linux.it; q=dns/txt; s=picard; t=1775180864; h=date : to :\n message-id : references : mime-version : in-reply-to : subject :\n list-id : list-unsubscribe : list-archive : list-post : list-help :\n list-subscribe : from : reply-to : cc : content-type :\n content-transfer-encoding : sender : from;\n bh=7Q96r7xBLmSHciJHA69CAafb/yTq8kkGynMAjcb++DA=;\n b=SgNKyUrvlyQQ5Cbl9LKREr+33UuCu+LBoGGX57M9M+IMLVbVfDlofRfcMyi+T7msd6+qE\n gWgxBId2r5W09eVfsOR0rWKSvyqoZlRYmxiU8d2zJLfJ2iidcF7zWsB82jKXHVyxKVVVge/\n 5qOwogk7vahxY0zQyIIfpSUowcxMIEw=","v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n s=mimecast20190719; t=1775180858;\n h=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n to:to:cc:cc:mime-version:mime-version:content-type:content-type:\n in-reply-to:in-reply-to:references:references;\n bh=1kdRCMpquQQLHpt/z5OmWuoXyEg0BmIi5m7emlG0mPs=;\n b=UjoCIFCU9cEwJAxsh7ucpBQfV26dE+ksfpGK5UAVVD8ES89h4c78I2T/yb9/Qe7IOZTApk\n goSkeyG8QDEv0ad4p1l4JbNF/RW9NgtM6dG2bSRIyrCxF9bPphxbAiHhnzXsZdW1tplEGQ\n 10Az9IrZ2IcbNURERv6RlE72SaYCSVQ="],"X-MC-Unique":"8WFBRRSIPvarFgfmMbBmFw-1","X-Mimecast-MFC-AGG-ID":"8WFBRRSIPvarFgfmMbBmFw_1775180856","X-Google-DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=1e100.net; s=20251104; t=1775180856; x=1775785656;\n h=in-reply-to:content-disposition:mime-version:references:message-id\n :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc\n :subject:date:message-id:reply-to;\n bh=1kdRCMpquQQLHpt/z5OmWuoXyEg0BmIi5m7emlG0mPs=;\n b=Jv43BcXxShZsmvrqX4j7wUP3niiv+qM1U8eDvAc6JMrTKaNNQV/B5A5YtD5gcmS2GU\n G1+lalWNhcQQ8mhmMD+DIQfQYKfl0wyJhM/bQ6YXrg19sZckihI+0/50CeetJirO6VPe\n hyJ9J60hs2H75QgRCc9fmU1l60BseuyqHxH12NYM0kBhkpPx246CqV5p7OxLTw02urCr\n SadsjpWaM2XPq9YvN4Zh1Xl8UhHHp4ykfgCQ4JW3+a+gX1xIcj0XLYvhIfWDU8N1hpe2\n SUrRypw+cVEimjJX9N6IT4thCjwQ7Ni3hl8GIzPI63Asy9DmH5Wj/DHNOVB95/kR5JcJ\n Jsvg==","X-Gm-Message-State":"AOJu0Yyn/Q+m4IgOxV/tkwiaQj63PxVGx+ynTKAbYBLom7eOS6HPB3b4\n h6hRB2Viqk1DfHE0iXoQKDpSno+ySyuYBrSMyII1m8rniG4PAKeN8G6lV8ID6wkPTp9INe4Po0y\n jSxQ0uXoHlT98wNcx4VlRWiAJGG1KNlGhAQ5JA0/lbrztuTpnkSR1","X-Gm-Gg":"ATEYQzyk4qBXF1fqNFD2XpplM4Ga66wnW6BuSa4QWAEi40WcwXwuAy2FYhLf0fVirQG\n gNuMZ+wvCO9Hw94ugv/KM2imcaM3O9a/8pogHAKcV5LYFGPulw/XyqDnF3cv1xgCES5wEK1eH11\n rTuAjaou+tnu8Mn6QHDsSP+UcdackZkao182Oo3QvLaF3X3z6EEEN5BRDBAbNhhKDRUmu6zCPHf\n /+AQEYy+SstolWZikRaNNu+tSsHJMRxNxZHkrQbKzeZoA5YQ8e1x+5YViw/ztNJYVYoGC2SJmSn\n c3sq35NGo8IJDLaXaVYfkshlilv1xobuSko4HaKhyMF6OTUoD0Hot170QyLnAvBdkHCOkKFrsMD\n TBEufIqxcuG4kKVsuhw==","X-Received":["by 2002:a05:6a20:958e:b0:39c:787:f17a with SMTP id\n adf61e73a8af0-39f2efc1b23mr1011726637.41.1775180856158;\n Thu, 02 Apr 2026 18:47:36 -0700 (PDT)","by 2002:a05:6a20:958e:b0:39c:787:f17a with SMTP id\n adf61e73a8af0-39f2efc1b23mr1011702637.41.1775180855711;\n Thu, 02 Apr 2026 18:47:35 -0700 (PDT)"],"Date":"Fri, 3 Apr 2026 09:47:33 +0800","To":"Soma Das ","Message-ID":"","References":"<20260402081258.3239096-1-somadas1@linux.ibm.com>","MIME-Version":"1.0","In-Reply-To":"<20260402081258.3239096-1-somadas1@linux.ibm.com>","X-Mimecast-Spam-Score":"0","X-Mimecast-MFC-PROC-ID":"HNVkn5_92_6zwOqM28_cS60C9lqzLdeqL65cKQaTHzQ_1775180856","X-Mimecast-Originator":"redhat.com","Content-Disposition":"inline","X-Spam-Status":"No, score=0.1 required=7.0 tests=DKIM_SIGNED,DKIM_VALID,\n DKIM_VALID_AU,DKIM_VALID_EF,DMARC_PASS,SPF_HELO_PASS,SPF_PASS\n shortcircuit=no autolearn=disabled version=4.0.1","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on in-2.smtp.seeweb.it","X-Virus-Scanned":"clamav-milter 1.0.9 at in-2.smtp.seeweb.it","X-Virus-Status":"Clean","Subject":"Re: [LTP] [PATCH] zram: skip exfat on systems with large page size","X-BeenThere":"ltp@lists.linux.it","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"Linux Test Project ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","From":"Li Wang via ltp ","Reply-To":"Li Wang ","Cc":"ltp@lists.linux.it","Content-Type":"text/plain; charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Errors-To":"ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it","Sender":"\"ltp\" "}},{"id":3673216,"web_url":"http://patchwork.ozlabs.org/comment/3673216/","msgid":"<20260403165947.9094-1-somadas1@linux.ibm.com>","list_archive_url":null,"date":"2026-04-03T16:59:47","subject":"Re: [LTP] [PATCH] zram: skip exfat on systems with large page size","submitter":{"id":93035,"url":"http://patchwork.ozlabs.org/api/people/93035/","name":"Soma Das","email":"somadas1@linux.ibm.com"},"content":"On Fri, Apr 03, 2026 at 09:47:33AM +0800, Li Wang wrote:\n> Or, can we specify the sector size with 'mkfs.$fs -c $page_size'\n> when detecting a large pagesize system?\n\nThanks for the review.\n\nUsing mkfs.exfat -c $page_size would technically work, but I avoided\nit because:\n\n1. zram01 tests zram behaviour, not filesystem configuration -- using\n a non-default cluster size feels out of scope.\n2. The cluster size must be valid for the disk size (only 25MB here),\n so large cluster sizes could hit additional constraints.\n\nSkipping with TCONF honestly reflects that default exfat tooling does\nnot support this hardware configuration, which is useful signal.\n\nHappy to send a v2 with the -c approach if you prefer.\n\nThanks,\nSoma","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","ltp@lists.linux.it"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","ltp@picard.linux.it"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=UKsNOxFa;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.linux.it\n (client-ip=2001:1418:10:5::2; helo=picard.linux.it;\n envelope-from=ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it;\n receiver=patchwork.ozlabs.org)"],"Received":["from picard.linux.it (picard.linux.it [IPv6:2001:1418:10:5::2])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fnPVS0NPxz1yCs\n\tfor ; Sat, 04 Apr 2026 03:35:57 +1100 (AEDT)","from picard.linux.it (localhost [IPv6:::1])\n\tby picard.linux.it (Postfix) with ESMTP id 510F33E1365\n\tfor ; Fri, 3 Apr 2026 18:35:54 +0200 (CEST)","from in-6.smtp.seeweb.it (in-6.smtp.seeweb.it [217.194.8.6])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature ECDSA (secp384r1))\n (No client certificate requested)\n by picard.linux.it (Postfix) with ESMTPS id 775453E133C\n for ; Fri, 3 Apr 2026 18:35:51 +0200 (CEST)","from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com\n [148.163.156.1])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest\n SHA256)\n (No client certificate requested)\n by in-6.smtp.seeweb.it (Postfix) with ESMTPS id 8E0191401202\n for ; Fri, 3 Apr 2026 18:35:49 +0200 (CEST)","from pps.filterd (m0356517.ppops.net [127.0.0.1])\n by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id\n 6339o1K11535595; Fri, 3 Apr 2026 16:35:48 GMT","from ppma12.dal12v.mail.ibm.com\n (dc.9e.1632.ip4.static.sl-reverse.com [50.22.158.220])\n by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4d66q3hfma-1\n (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT);\n Fri, 03 Apr 2026 16:35:47 +0000 (GMT)","from pps.filterd (ppma12.dal12v.mail.ibm.com [127.0.0.1])\n by ppma12.dal12v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id\n 633Ch173021722;\n Fri, 3 Apr 2026 16:35:46 GMT","from smtprelay01.wdc07v.mail.ibm.com ([172.16.1.68])\n by ppma12.dal12v.mail.ibm.com (PPS) with ESMTPS id 4d6sasxw77-1\n (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT);\n Fri, 03 Apr 2026 16:35:46 +0000","from smtpav01.wdc07v.mail.ibm.com (smtpav01.wdc07v.mail.ibm.com\n [10.39.53.228])\n by smtprelay01.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id\n 633GZic47209936\n (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK);\n Fri, 3 Apr 2026 16:35:44 GMT","from smtpav01.wdc07v.mail.ibm.com (unknown [127.0.0.1])\n by IMSVA (Postfix) with ESMTP id B11EA58055;\n Fri, 3 Apr 2026 16:35:44 +0000 (GMT)","from smtpav01.wdc07v.mail.ibm.com (unknown [127.0.0.1])\n by IMSVA (Postfix) with ESMTP id 4C51B5804B;\n Fri, 3 Apr 2026 16:35:44 +0000 (GMT)","from ktes.isst.tadn.ibm.com (unknown [9.5.15.16])\n by smtpav01.wdc07v.mail.ibm.com (Postfix) with ESMTP;\n Fri, 3 Apr 2026 16:35:44 +0000 (GMT)"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc\n :content-transfer-encoding:date:from:in-reply-to:message-id\n :mime-version:references:subject:to; s=pp1; bh=DKdtlhjTrp+zQioLv\n RYlmfcV7FXjlzOp87WUxfPE+PQ=; b=UKsNOxFa8RZUdNI56zGSGy/SbMO+LvS+0\n Iu3Fc3gH3Z6rRZeVJfzpwgCGaPaUJQVzGHTZyE+mnk5PxaK6+56YFIJ2TLZflD9K\n Wgq1iIhAfcuFpY68DerFqsx62ClXpZDxQEnCHXfmguGzKMkSJgogQOP353lhqLXV\n CRJs4sf26xvG0YMUDPIUasIbg65d3mV/j9IBxYG77eOLZoKAs/LKB6Q++DFEuD1m\n ekb6Fg6EhLTUVxUeYQvmqClNe1Oto7GoIcRCuP+UVIT7geLvAmyf0Vhh1dxd23pN\n xoCAQnyTlGMVRTC8h/ubfFP0UQ17XzgNbAL9DiVxJaxyYE/oFp6zw==","From":"Soma Das ","To":"liwang@redhat.com","Date":"Fri, 3 Apr 2026 16:59:47 +0000","Message-Id":"<20260403165947.9094-1-somadas1@linux.ibm.com>","X-Mailer":"git-send-email 2.39.1","In-Reply-To":"","References":"","MIME-Version":"1.0","X-TM-AS-GCONF":"00","X-Proofpoint-GUID":"tEuKYzt5oyts2vdjWFJ5KHyIwx9kBwS3","X-Authority-Analysis":"v=2.4 cv=frzRpV4f c=1 sm=1 tr=0 ts=69cfec63 cx=c_pps\n a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17\n a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=U7nrCbtTmkRpXpFmAIza:22 a=ArsMc-J5l3kcVpZNYO4A:9","X-Proofpoint-ORIG-GUID":"tEuKYzt5oyts2vdjWFJ5KHyIwx9kBwS3","X-Proofpoint-Spam-Details-Enc":"AW1haW4tMjYwNDAzMDE0NSBTYWx0ZWRfX5CZqhfm8pRzk\n bcrKzkaKqixeF7mxS44L/Ov25ji0g5kaNHPwYYH+Z8NjP6R9R4PJEjTVYtjFjjLJM1USzyECm1c\n 2z3p+CGO/WpTTcYHoDjI/GvCEtefm5bcAHsW0VRAObEzJetWhkUBtOjVKv2YePzSKTSfHiLZtYO\n rAnj+BsAwigtOGp86/17R9VTClBPf+hcRrIpzNf686KepFb/w9a2Pz2myg8FSstj0RJJfyctM+k\n BdKiYBv7PzPte+q8qVWJ+2xsfsXlO/znsJ20gmgafYWGQm39tz6mGf6CBdmNC8hzxhgGAiKXfKK\n 2Q6izcmmW1zZxo9FvouTMInv+l7akEov3/1L3joUM/HlzmRWD3i0Tfdl/jZD/rSCGEQjrWEkK5G\n veaEtUlA0DVquTCQGaHEIePPG/QcCF7SLTB2Sw0jG50T8NoFGnQU1VlTUcOpeIO/cjUcg3gL58J\n yFyF8FJeKyrB9dn0WzQ==","X-Proofpoint-Virus-Version":"vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-04-03_05,2026-04-03_01,2025-10-01_01","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n impostorscore=0 spamscore=0 priorityscore=1501 malwarescore=0 clxscore=1011\n lowpriorityscore=0 bulkscore=0 adultscore=0 suspectscore=0 phishscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2604030145","X-Spam-Status":"No, score=0.1 required=7.0 tests=DKIM_SIGNED,DKIM_VALID,\n SPF_HELO_NONE,SPF_PASS shortcircuit=no autolearn=disabled version=4.0.1","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on in-6.smtp.seeweb.it","X-Virus-Scanned":"clamav-milter 1.0.9 at in-6.smtp.seeweb.it","X-Virus-Status":"Clean","Subject":"Re: [LTP] [PATCH] zram: skip exfat on systems with large page size","X-BeenThere":"ltp@lists.linux.it","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"Linux Test Project ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Cc":"somadas1@linux.ibm.com, ltp@lists.linux.it","Content-Type":"text/plain; charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Errors-To":"ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it","Sender":"\"ltp\" "}},{"id":3673361,"web_url":"http://patchwork.ozlabs.org/comment/3673361/","msgid":"","list_archive_url":null,"date":"2026-04-04T01:14:32","subject":"Re: [LTP] [PATCH] zram: skip exfat on systems with large page size","submitter":{"id":73704,"url":"http://patchwork.ozlabs.org/api/people/73704/","name":"Li Wang","email":"liwang@redhat.com"},"content":"Thanks for the explanation.\n\nI still think we should go with the -c approach rather than skipping.\nA couple of points:\n\nOn 1, I don't think this changes the scope of the test. zram01 already\ninvokes mkfs.$fs as a means to exercise zram, adjusting a parameter so\nthat mkfs actually succeeds is just making the test work, not turning\nit into a filesystem configuration test.\n\nOn 2, 25MB with a 64KB cluster size gives roughly 390 clusters, which\nis well within exfat's limits. Could you point out a concrete constraint\nthat would actually fail here? If there isn't one, I'd prefer not to\nuse a hypothetical concern as justification for skipping.\n\nOn the TCONF, reporting TCONF here would make it look like exfat on\nzram is fundamentally broken on 64K-page systems, when in reality it\nworks with a one-line change. That is a false negative we should\navoid in a test suite.\n\nPlease send a v2 with the -c approach.\n\nOn Fri, Apr 03, 2026 at 04:59:47PM +0000, Soma Das wrote:\n> On Fri, Apr 03, 2026 at 09:47:33AM +0800, Li Wang wrote:\n> > Or, can we specify the sector size with 'mkfs.$fs -c $page_size'\n> > when detecting a large pagesize system?\n> \n> Thanks for the review.\n> \n> Using mkfs.exfat -c $page_size would technically work, but I avoided\n> it because:\n> \n> 1. zram01 tests zram behaviour, not filesystem configuration -- using\n> a non-default cluster size feels out of scope.\n> 2. The cluster size must be valid for the disk size (only 25MB here),\n> so large cluster sizes could hit additional constraints.\n> \n> Skipping with TCONF honestly reflects that default exfat tooling does\n> not support this hardware configuration, which is useful signal.\n> \n> Happy to send a v2 with the -c approach if you prefer.\n> \n> Thanks,\n> Soma\n>","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","ltp@lists.linux.it"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","ltp@picard.linux.it"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=lists.linux.it header.i=@lists.linux.it\n header.a=rsa-sha256 header.s=picard header.b=PIGCdnIS;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=KwlVsCWf;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.linux.it\n (client-ip=2001:1418:10:5::2; helo=picard.linux.it;\n envelope-from=ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it;\n receiver=patchwork.ozlabs.org)"],"Received":["from picard.linux.it (picard.linux.it [IPv6:2001:1418:10:5::2])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fnd135CPxz1xtJ\n\tfor ; Sat, 04 Apr 2026 12:14:47 +1100 (AEDT)","from picard.linux.it (localhost [IPv6:::1])\n\tby picard.linux.it (Postfix) with ESMTP id A91B13E4E69\n\tfor ; Sat, 4 Apr 2026 03:14:45 +0200 (CEST)","from in-4.smtp.seeweb.it (in-4.smtp.seeweb.it [217.194.8.4])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature ECDSA (secp384r1))\n (No client certificate requested)\n by picard.linux.it (Postfix) with ESMTPS id 5436B3CF512\n for ; Sat, 4 Apr 2026 03:14:41 +0200 (CEST)","from us-smtp-delivery-124.mimecast.com\n (us-smtp-delivery-124.mimecast.com [170.10.129.124])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest\n SHA256)\n (No client certificate requested)\n by in-4.smtp.seeweb.it (Postfix) with ESMTPS id BE38F1000457\n for ; Sat, 4 Apr 2026 03:14:40 +0200 (CEST)","from mail-pl1-f198.google.com (mail-pl1-f198.google.com\n [209.85.214.198]) by relay.mimecast.com with ESMTP with STARTTLS\n (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id\n us-mta-631-Iziw3etXNb2rWkcF6r8dTg-1; Fri, 03 Apr 2026 21:14:37 -0400","by mail-pl1-f198.google.com with SMTP id\n d9443c01a7336-2b23c909256so34395815ad.0\n for ; Fri, 03 Apr 2026 18:14:37 -0700 (PDT)","from redhat.com ([209.132.188.88]) by smtp.gmail.com with ESMTPSA id\n d9443c01a7336-2b2747530e4sm71177695ad.18.2026.04.03.18.14.34\n (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n Fri, 03 Apr 2026 18:14:34 -0700 (PDT)"],"DKIM-Signature":["v=1; a=rsa-sha256; c=relaxed/simple; d=lists.linux.it;\n i=@lists.linux.it; q=dns/txt; s=picard; t=1775265285; h=date : to :\n message-id : references : mime-version : in-reply-to : subject :\n list-id : list-unsubscribe : list-archive : list-post : list-help :\n list-subscribe : from : reply-to : cc : content-type :\n content-transfer-encoding : sender : from;\n bh=EyLLtaUNThZCuJ1ZYQrX4p3E9Yf3ByLQcnd9kbPA2Xc=;\n b=PIGCdnISak2A8tKQzdTjHMigw3elm0MRZDnbH7KzINgWBy27wDM1i/mHMmEcqf1RukCLg\n FmwdUAllvTx6EEpPSRPKh8bHvBcmVVhsVraulNfzOAT4L2YOSl0Tm0M/Tymlg/stCKVk6Qt\n kVIiJg8dSS83egboMCrSsT7ZKta724U=","v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n s=mimecast20190719; t=1775265278;\n h=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n to:to:cc:cc:mime-version:mime-version:content-type:content-type:\n in-reply-to:in-reply-to:references:references;\n bh=kjM8Gp357dnP1O/47c2v1FnZ74DuYX9OY8tv40NLR7E=;\n b=KwlVsCWfp5E3f6KW8M33ySbf7D5eYAOJ+uK5DEbQBeJSVQZMKbgG03TScgFjCAhiwt2nBJ\n EswPHeJZVCdyVDdwenK7OdLJEWelRYNB48f1XAYdhx86ne17tRnki+VQy3N5/qxRXdb22K\n zp1KsofbWqxWNDu5ZECITHgOpXYf9kA="],"X-MC-Unique":"Iziw3etXNb2rWkcF6r8dTg-1","X-Mimecast-MFC-AGG-ID":"Iziw3etXNb2rWkcF6r8dTg_1775265276","X-Google-DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=1e100.net; s=20251104; t=1775265276; x=1775870076;\n h=in-reply-to:content-disposition:mime-version:references:message-id\n :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc\n :subject:date:message-id:reply-to;\n bh=kjM8Gp357dnP1O/47c2v1FnZ74DuYX9OY8tv40NLR7E=;\n b=lu+O/JwFNWy92PvhFr4QfkvDy3xKRRGiemzCCn80hPWVeIdDPxhQsubfq6CrCJEyl4\n YY7XR30pjz530t7cUk4t4K33H07Syx6Hb0LWLMB41Nlq0PYokFH5opV4E6NvEGTfbPoK\n IBrbx0aTMFx5gl2WOkMC5FvBhTysI1GWSms6xAxZK0QOfn20iehCtXITcXaXkNaSVAM6\n gBcycFyJAhlibkM2WF/Twnl3xsRa2eWV/tFf3sAiqsYAIC4wruyffQiYNjvo+Mu+g62o\n mMMitv3u9xZBp/7XroQEClf7w4GfIY6s03YOq7iuTBwSqXPysirckaW5xyjs95MNJqmn\n Anbg==","X-Gm-Message-State":"AOJu0YygEyuSBT4wx2t9mxPzCulBj0ZXThvZSBwh8Oy3FGaSnU3dlKx+\n N/DVfQybnkge1kmfBRtQp/H1SoVS1wqgoshbe9a0S5zqE8zx2+tMDSTw8Jlx3WlzZAXg0/dXWTB\n q70R1Cp57uDOYTAS1ljLEWeUaN6e5FhkAMga4azXuq+XVOrwUFfN1","X-Gm-Gg":"AeBDiesLdYnD7h5pDHNPzMAXRmw/PodmdyoJvIzLJzIldvWTvWki7ZEGVRfTaOCARtK\n cu7tcVZiG3GyuQl+DP/cc7uVCI3/lfvEdnEZnGrVvfkvmelwG+JGnAh34drGkdDh6GnBTNd1CdU\n uP0k2vS4UrYRA++4uKzYS6bBUMBJJ9LJFx0DDIsqYIWzX3Vwz4lfLvftoJ6+0SV9UXNdO3QCpRv\n RR2R60e6/m4lRXlliIy1JxtA373YrByLEh6lP2L5e+R51lVmBfa5YvTfWjOI0OOv9RWY3sDu8IM\n njQbsFMcXtr2VeW9R9JJBvqKjdpB8NtBAZmPBvh+Id7ZIcFZFAPovAV1vbJqkYe+bhMQ26N7O7e\n w4sfgBTsFKmhjaUBIIA==","X-Received":["by 2002:a17:903:2f08:b0:2b0:67fa:dbf8 with SMTP id\n d9443c01a7336-2b2817e97b9mr52018235ad.41.1775265276086;\n Fri, 03 Apr 2026 18:14:36 -0700 (PDT)","by 2002:a17:903:2f08:b0:2b0:67fa:dbf8 with SMTP id\n d9443c01a7336-2b2817e97b9mr52018055ad.41.1775265275597;\n Fri, 03 Apr 2026 18:14:35 -0700 (PDT)"],"Date":"Sat, 4 Apr 2026 09:14:32 +0800","To":"Soma Das ","Message-ID":"","References":"\n <20260403165947.9094-1-somadas1@linux.ibm.com>","MIME-Version":"1.0","In-Reply-To":"<20260403165947.9094-1-somadas1@linux.ibm.com>","X-Mimecast-Spam-Score":"0","X-Mimecast-MFC-PROC-ID":"N9agXS3zGc-D6GWoPUb5ENuxlQ_2vNVnamcnIuLZSmk_1775265276","X-Mimecast-Originator":"redhat.com","Content-Disposition":"inline","X-Spam-Status":"No, score=0.1 required=7.0 tests=DKIM_SIGNED,DKIM_VALID,\n DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_PASS,SPF_PASS shortcircuit=no\n autolearn=disabled version=4.0.1","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on in-4.smtp.seeweb.it","X-Virus-Scanned":"clamav-milter 1.0.9 at in-4.smtp.seeweb.it","X-Virus-Status":"Clean","Subject":"Re: [LTP] [PATCH] zram: skip exfat on systems with large page size","X-BeenThere":"ltp@lists.linux.it","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"Linux Test Project ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","From":"Li Wang via ltp ","Reply-To":"Li Wang ","Cc":"ltp@lists.linux.it","Content-Type":"text/plain; charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Errors-To":"ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it","Sender":"\"ltp\" "}},{"id":3673477,"web_url":"http://patchwork.ozlabs.org/comment/3673477/","msgid":"<20260404172031.819806-1-somadas1@linux.ibm.com>","list_archive_url":null,"date":"2026-04-04T17:20:31","subject":"Re: [LTP] [PATCH] zram: skip exfat on systems with large page size","submitter":{"id":93035,"url":"http://patchwork.ozlabs.org/api/people/93035/","name":"Soma Das","email":"somadas1@linux.ibm.com"},"content":"On Sat, Apr 04, 2026 at 09:14:32AM +0800, Li Wang wrote:\n> I still think we should go with the -c approach rather than skipping.\n\nThanks for the detailed explanation.\n\nUnderstood — I will send a v2 with the -c $page_size approach.\n\nThanks,\nSoma","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","ltp@lists.linux.it"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","ltp@picard.linux.it"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=qDZnCqF/;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.linux.it\n (client-ip=2001:1418:10:5::2; helo=picard.linux.it;\n envelope-from=ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it;\n receiver=patchwork.ozlabs.org)"],"Received":["from picard.linux.it (picard.linux.it [IPv6:2001:1418:10:5::2])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fp1vm15rqz1xtJ\n\tfor ; Sun, 05 Apr 2026 02:56:36 +1000 (AEST)","from picard.linux.it (localhost [IPv6:::1])\n\tby picard.linux.it (Postfix) with ESMTP id 31E0A3E26B7\n\tfor ; Sat, 4 Apr 2026 18:56:34 +0200 (CEST)","from in-5.smtp.seeweb.it (in-5.smtp.seeweb.it\n [IPv6:2001:4b78:1:20::5])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n (No client certificate requested)\n by picard.linux.it (Postfix) with ESMTPS id 315833CD98D\n for ; Sat, 4 Apr 2026 18:56:29 +0200 (CEST)","from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com\n [148.163.158.5])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest\n SHA256)\n (No client certificate requested)\n by in-5.smtp.seeweb.it (Postfix) with ESMTPS id C48B0600472\n for ; Sat, 4 Apr 2026 18:56:28 +0200 (CEST)","from pps.filterd (m0356516.ppops.net [127.0.0.1])\n by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id\n 634FErJ2258416; Sat, 4 Apr 2026 16:56:27 GMT","from ppma13.dal12v.mail.ibm.com\n (dd.9e.1632.ip4.static.sl-reverse.com [50.22.158.221])\n by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4dar2g9kcm-1\n (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT);\n Sat, 04 Apr 2026 16:56:26 +0000 (GMT)","from pps.filterd (ppma13.dal12v.mail.ibm.com [127.0.0.1])\n by ppma13.dal12v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id\n 6349Ud22030995;\n Sat, 4 Apr 2026 16:56:26 GMT","from smtprelay05.dal12v.mail.ibm.com ([172.16.1.7])\n by ppma13.dal12v.mail.ibm.com (PPS) with ESMTPS id 4d6uhk9rmg-1\n (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT);\n Sat, 04 Apr 2026 16:56:26 +0000","from smtpav01.wdc07v.mail.ibm.com (smtpav01.wdc07v.mail.ibm.com\n [10.39.53.228])\n by smtprelay05.dal12v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id\n 634GuPMR328388\n (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK);\n Sat, 4 Apr 2026 16:56:25 GMT","from smtpav01.wdc07v.mail.ibm.com (unknown [127.0.0.1])\n by IMSVA (Postfix) with ESMTP id 119B858055;\n Sat, 4 Apr 2026 16:56:25 +0000 (GMT)","from smtpav01.wdc07v.mail.ibm.com (unknown [127.0.0.1])\n by IMSVA (Postfix) with ESMTP id 9D1035804B;\n Sat, 4 Apr 2026 16:56:24 +0000 (GMT)","from ktes.isst.tadn.ibm.com (unknown [9.5.15.16])\n by smtpav01.wdc07v.mail.ibm.com (Postfix) with ESMTP;\n Sat, 4 Apr 2026 16:56:24 +0000 (GMT)"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc\n :content-transfer-encoding:content-type:date:from:in-reply-to\n :message-id:mime-version:references:subject:to; s=pp1; bh=ljSthO\n 0Nny1iwoHnOdLYD+8frqG2I993oTTj4UmGjuM=; b=qDZnCqF/eXpw+VEFXoqs+P\n 0vR62pyFu7j0ibUu4FTc1WLDz+04NbTNheWVAXnLJpAhdqhy1U4R/kuH8c0lKr5m\n 06WL10+ag4T4ZgoPb/r9wEn8zZSJJhxhbDVhR/05+yEC4WhsWrmMr8Uauvvxw2ii\n 5U3CBuW2JVA9bB7vQO7yydGJIvN/pwTkiO/l4yZW63vMj9eupeykq6yd1HXIFBPj\n /4TQCPIN1Mx9T9bqkA1cFZOFvKSY1CZwv6rW/5ZaikW+PPRMbRf5OXia9xufg0Jz\n a4Qt5oGwSl/YFxUP0uvIJEwfVkI/xEFWnWHtxfGN4J5cy/4Zc+f9sEZI6BozdvaQ\n ==","From":"Soma Das ","To":"liwang@redhat.com","Date":"Sat, 4 Apr 2026 17:20:31 +0000","Message-Id":"<20260404172031.819806-1-somadas1@linux.ibm.com>","X-Mailer":"git-send-email 2.39.1","In-Reply-To":"","References":"","MIME-Version":"1.0","X-TM-AS-GCONF":"00","X-Proofpoint-GUID":"Ya86afWjosz3W6URCBvUJ0ZLlxMRBS-m","X-Proofpoint-Spam-Details-Enc":"AW1haW4tMjYwNDA0MDE1OCBTYWx0ZWRfX/WrRNlaVvYpF\n otuREw1f0QhLGRWVj2+6PP6S581YmrkJHMtsNfOFCNbhlSUH3vuxI2vZR1fp3MFyDb9nMRBH2M+\n bFpegZtfFQzwB7+ulbqNmp0w2/1RqIat47HzycrSHX8Z9purlsNdtUlFMWthjH6R6qYQWRI/dMW\n ITIKMbdENuZ7e/tRQHHylesDVLuep1c65Vq4TqBLs61/4LUdebEWgrjJvDqq96SlrLveznsWk4z\n shsylV8654lRo++mJcLfRjVieRGmPd8pHAgbkUGSKlMnvi/f6hSj+XyCwRDoXfpu8tZOSfodQWl\n f/QVtBgMSKRJME9dqnZXbHcp9LVRCzkwYE7liYjl89n4XFK/CRKyfBbUT57hlX3T9iQp6657D4q\n /FNiBoeMF4380m+rM7QhM9949EN7MTSt6dEugBwSisw6v8uTDyRO8ewDNCY/PQNh0xtwWcBDvQI\n 0tvMbJaT3WiCTb/atyA==","X-Authority-Analysis":"v=2.4 cv=b+u/I9Gx c=1 sm=1 tr=0 ts=69d142bb cx=c_pps\n a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17\n a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22\n a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=lzfuAOLxaf_O7s3GLt4A:9\n a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10","X-Proofpoint-ORIG-GUID":"Ya86afWjosz3W6URCBvUJ0ZLlxMRBS-m","X-Proofpoint-Virus-Version":"vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-04-04_02,2026-04-03_01,2025-10-01_01","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n suspectscore=0 phishscore=0 bulkscore=0 adultscore=0 lowpriorityscore=0\n impostorscore=0 malwarescore=0 spamscore=0 priorityscore=1501 clxscore=1015\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2604040158","X-Spam-Status":"No, score=0.1 required=7.0 tests=DKIM_SIGNED,DKIM_VALID,\n SPF_HELO_NONE,SPF_PASS shortcircuit=no autolearn=disabled version=4.0.1","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on in-5.smtp.seeweb.it","X-Virus-Scanned":"clamav-milter 1.0.9 at in-5.smtp.seeweb.it","X-Virus-Status":"Clean","Subject":"Re: [LTP] [PATCH] zram: skip exfat on systems with large page size","X-BeenThere":"ltp@lists.linux.it","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"Linux Test Project ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Cc":"somadas1@linux.ibm.com, ltp@lists.linux.it","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"base64","Errors-To":"ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it","Sender":"\"ltp\" "}}]