Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753078Ab3EMFMZ (ORCPT ); Mon, 13 May 2013 01:12:25 -0400 Received: from mailout2.samsung.com ([203.254.224.25]:46518 "EHLO mailout2.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752555Ab3EMFMW (ORCPT ); Mon, 13 May 2013 01:12:22 -0400 X-AuditID: cbfee68e-b7f276d000002279-68-5190763460d4 Date: Mon, 13 May 2013 05:12:20 +0000 (GMT) From: EUNBONG SONG Subject: Re: Re: EXT4 panic at jbd2_journal_put_journal_head() in 3.9+ To: "Sidorov, Andrei" , "Theodore Ts'o" , Tony Luck , Dmitry Monakhov , "linux-ext4@vger.kernel.org" , "linux-kernel@vger.kernel.org" Reply-to: eunb.song@samsung.com MIME-version: 1.0 X-MTR: 20130513050958898@eunb.song Msgkey: 20130513050958898@eunb.song X-EPLocale: ko_KR.euc-kr X-Priority: 3 X-EPWebmail-Msg-Type: personal X-EPWebmail-Reply-Demand: 0 X-EPApproval-Locale: X-EPHeader: ML X-EPTrCode: X-EPTrName: X-MLAttribute: X-RootMTR: 20130513050958898@eunb.song X-ParentMTR: X-ArchiveUser: X-CPGSPASS: N Content-type: text/plain; charset=euc-kr MIME-version: 1.0 Message-id: <3567921.21651368421937829.JavaMail.weblogic@epml07> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprIKsWRmVeSWpSXmKPExsVy+t8zHV2TsgmBBpPXyVlc3jWHzYHR4/Mm uQDGKC6blNSczLLUIn27BK6M81+mMxXcYK44+qKNsYHxBHMXIyeHkICKRMv/74wgtoSAicT/ x5PZIGwxiQv31gPZXEA1yxglrvXNhCv63jidCSIxn1HiyMJHYJNYBFQlvs7eA9bNJqAt8fbL A1YQW1jATWLF7iZmkAYRgcVMEodaPzFBrJaXmHz6MjuIzSsgKHFy5hMWiA1KEqsuvWCBiCtL LL15BOokCYlZ0y+wQti8EjPan0LVy0lM+7qGGcKWljg/awMjzAuLvz+GivNLHLu9A2gvB1jv k/vBMGN2b/4CNV5AYuqZg1Ct6hIt1/YyQdh8EmsWvmWBGbPr1HJmmN77W+aC1TALKEpM6X7I DmFrSXz5sY8N3Vu8Ag4S16+dYAeFg4TAVA6JpW9fsE9gVJqFpG4WklmzkMxCVrOAkWUVo2hq QXJBcVJ6kZFecWJucWleul5yfu4mRkhy6NvBePOA9SHGZGCkTGSWEk3OByaXvJJ4Q2MzIwtT E1NjI3NLM9KElcR51VqsA4UE0hNLUrNTUwtSi+KLSnNSiw8xMnFwSjUwFlZueu5q1Bfd47H3 FY90Seq5LcoP26Uu3TqglrnQcuvjrXP3dDzh+35WRUxMUX/vBueS7D//FixrbirPuf3GyHX3 o/j4bW6/0jnMjLcFyxW0b9o24bxLld/+otWLvPXLzkeLH1zE1iZvfDPufzr7uVCrD+LLUifW zv5wPanyI4dDm8flF1W/lViKMxINtZiLihMBdo+hpyQDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrOKsWRmVeSWpSXmKPExsVy+t/tGbomZRMCDR73yVhc3jWHzYHR4/Mm uQDGqAybjNTElNQihdS85PyUzLx0WyXv4HjneFMzA0NdQ0sLcyWFvMTcVFslF58AXbfMHKCh SgpliTmlQKGAxOJiJX07m6L80pJUhYz84hJbpWgjA2M9I1MTPSNjAz0Tg1grQwMDI1OgqoSM jPNfpjMV3GCuOPqijbGB8QRzFyMnh5CAikTL/++MILaEgInE98bpTBC2mMSFe+vZuhi5gGrm M0ocWfgIrIFFQFXi6+w9bCA2m4C2xNsvD1hBbGEBN4kVu5uYQRpEBBYzSRxq/cQEsUFeYvLp y+wgNq+AoMTJmU9YIDYoSay69IIFIq4ssfTmETaIuITErOkXWCFsXokZ7U+h6uUkpn1dwwxh S0ucn7WBEebSxd8fQ8X5JY7d3gG0lwOs98n9YJgxuzd/gRovIDH1zEGoVnWJlmt7oR7mk1iz 8C0LzJhdp5Yzw/Te3zIXrIZZQFFiSvdDdghbS+LLj31s6N7iFXCQuH7tBPsERtlZSFKzkLTP QtKOrGYBI8sqRtHUguSC4qT0ChO94sTc4tK8dL3k/NxNjOBk9GzJDsaGC9aHGAU4GJV4eBco TwgUYk0sK67MPcQowcGsJMK71w0oxJuSWFmVWpQfX1Sak1p8iDEZGGsTmaVEk/OBiTKvJN7Q 2MDY0NDS3MDU0MiCNGElcd5nrdaBQgLpiSWp2ampBalFMFuYODilGhhDLl5fcqtELlK37JJr mpg/+9VShanp6S56t6a8DVy6K17l4LH85ms5xgfPhEzetrdut+P5D7cXnRdyEez+nxhUIHkw 0lfz1+V3OinrakP3Xgt7Xji71ZbfTfOure2v/ac3BTEFzb5Vt3xnWJJr7pOO3xOX7D+eV3H4 6WQ2/f8VTf1+Dyf3Tr6nxFKckWioxVxUnAgA5U+gAooDAAA= DLP-Filter: Pass X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id r4D5CVcT031485 Content-Length: 493 Lines: 10 > Hi, > Bitfields are likely to be implemented using read-modify-write semantics. > Modifications of either b_jlist or b_jmodified must be done under lock > since they share same uint. I guess this lock is missing somewhere. Hi, I agree with you. b_jlist and b_jmodified share the same unit. I think they are separated. Thanks. ????{.n?+???????+%?????ݶ??w??{.n?+????{??G?????{ay?ʇڙ?,j??f???h?????????z_??(?階?ݢj"???m??????G????????????&???~???iO???z??v?^?m???? ????????I?