From mboxrd@z Thu Jan 1 00:00:00 1970 From: EUNBONG SONG Subject: Re: Re: Re: EXT4 regression caused 4eec7 Date: Sun, 12 May 2013 13:05:00 +0000 (GMT) Message-ID: <31302271.2821368363898561.JavaMail.weblogic@epml17> Reply-To: eunb.song@samsung.com Mime-Version: 1.0 Content-Type: text/plain; charset=euc-kr Content-Transfer-Encoding: base64 Cc: Jan Kara , "linux-ext4@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-xfs@vger.kernel.org" , Dave Chinner To: Theodore Ts'o , Dmitry Monakhov Return-path: Received: from mailout4.samsung.com ([203.254.224.34]:11485 "EHLO mailout4.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752317Ab3ELNFC (ORCPT ); Sun, 12 May 2013 09:05:02 -0400 Received: from epcpsbgr5.samsung.com (u145.gpu120.samsung.co.kr [203.254.230.145]) by mailout4.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0MMO00HOPSCAFF90@mailout4.samsung.com> for linux-ext4@vger.kernel.org; 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Sun, 12 May 2013 09:05:06 -0400 Received: from mailout4.samsung.com ([203.254.224.34]:11485 "EHLO mailout4.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752491Ab3ELNFD (ORCPT ); Sun, 12 May 2013 09:05:03 -0400 X-AuditID: cbfee691-b7fef6d000002d62-f5-518f937c186f Date: Sun, 12 May 2013 13:05:00 +0000 (GMT) From: EUNBONG SONG Subject: Re: Re: Re: EXT4 regression caused 4eec7 To: "Theodore Ts'o" , Dmitry Monakhov Cc: Jan Kara , "linux-ext4@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-xfs@vger.kernel.org" , Dave Chinner Reply-to: eunb.song@samsung.com MIME-version: 1.0 X-MTR: 20130512130252322@eunb.song Msgkey: 20130512130252322@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: 20130512094125781@eunb.song X-ParentMTR: 20130512094125781@eunb.song X-ArchiveUser: X-CPGSPASS: N Content-type: text/plain; charset=euc-kr MIME-version: 1.0 Message-id: <31302271.2821368363898561.JavaMail.weblogic@epml17> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprAKsWRmVeSWpSXmKPExsVy+t8zXd2ayf2BBnuX6lpc3jWHzYHR4/Mm uQDGKC6blNSczLLUIn27BK6MLVtfMRWsEqz4dPgmUwPjG4EuRk4OIQEViZb/3xlBbAkBE4kj 5+4xQdhiEhfurWfrYuQCqlnGKHH36go2uKJZE5khEvMZJTraV7CAJFgEVCVObPvHCmKzCWhL vP3yAMwWFjCUePL4FjOILSLgLzHh4XQWkGZmgX+MEjum/2WHOENeYvLpy2A2r4CgxMmZT1gg tilJNH36xgQRV5aY8mYz1HkSErOmX2CFsHklZrQ/haqXk5j2dQ0zhC0tcX7WBkaYdxZ/fwwV 55c4dnsH0BwOsN4n94Nhxuze/AXqSQGJqWcOQrWqS8xdOBlqlaZE3/LlcGN2nYKxeSXub5kL dhqzgKLElO6H7BC2lsSXH/vY0L3FK+Ag0fmyg3kCo/IsJKlZSNpnIWlHVrOAkWUVo2hqQXJB cVJ6kalecWJucWleul5yfu4mRkhqmLiD8f4B60OMycA4mcgsJZqcD0wteSXxhsZmRhamJqbG RuaWZqQJK4nzqrdYBwoJpCeWpGanphakFsUXleakFh9iZOLglGpglFo0d3fDp2n96d/jyo0U tNQOV7dLqOvef+B0vZ9f8pbo4u0BKblpt1NL56TOPZ23rv9O3QKGt4VmulLfQuykiwL19M7O 3K29VcX0VaVDauyxVaafDT58W7tA5NE/vRi+Zxdl+vWUhf4FeismJGwWLjGo1N38pPrYDKct jEyM6qLFBSbFa+qVWIozEg21mIuKEwFF9I47IwMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpmk+LIzCtJLcpLzFFi42I5/e/2TN2ayf2BBud2aFlc3jWHzYHR4/Mm uQDGqAybjNTElNQihdS85PyUzLx0WyXv4HjneFMzA0NdQ0sLcyWFvMTcVFslF58AXbfMHKCh SgpliTmlQKGAxOJiJX07m6L80pJUhYz84hJbpWgjA2M9I1MTPSNjAz0Tg1grQwMDI1OgqoSM jC1bXzEVrBKs+HT4JlMD4xuBLkZODiEBFYmW/98ZQWwJAROJI7MmMkPYYhIX7q1n62LkAqqZ zyjR0b6CBSTBIqAqcWLbP1YQm01AW+LtlwdgtrCAocSTx7fAmkUE/CUmPJzOAtLMLPCPUWLH 9L/sENvkJSafvgxm8woISpyc+YQFYpuSRNOnb0wQcWWJKW82M0HEJSRmTb/ACmHzSsxofwpV Lycx7esaqEulJc7P2sAIc/Xi74+h4vwSx27vAJrDAdb75H4wzJjdm7+wQdgCElPPHIRqVZeY u3Ay1CpNib7ly+HG7DoFY/NK3N8yF+w0ZgFFiSndD9khbC2JLz/2saF7i1fAQaLzZQfzBEa5 WUhSs5C0z0LSjqxmASPLKkbR1ILkguKk9AoTveLE3OLSvHS95PzcTYzgJPVsyQ7GhgvWhxgF OBiVeHgT9vcFCrEmlhVX5h5ilOBgVhLhvR/XHyjEm5JYWZValB9fVJqTWnyIMRkYgxOZpUST 84EJNK8k3tDYwNjQ0NLcwNTQyII0YSVx3met1oFCAumJJanZqakFqUUwW5g4OKUaGCfe2Dir 1Kyktdhlh1Gc2VVFKRb/g1Pr+UVnTVp9OHDplKV5RUz5SwTVb7NXLZJ8JR77LTCn7klSxM/A qV8zeyw6lz861dcsHZMV66136CE779eU5pREoR+2OdMmyn7eYxC5/5fgFSWm51VyTz8rlr9t nszwQrEiXn/lhP2WbeK2Oay/g2XYlFiKMxINtZiLihMBqyHYcZYDAAA= 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 r4CD5bbk029488 >> Since at this point it's safer to rollback the change and we can >> investigate more deeply how to fix it correctly for the next >> development cycle, this is the patch which I'm testing. >> - Ted > Hello, I've tested with your patch. But the same problem was reproduced. > Currently, I'm trying to git bisect. If i done git bisect, i will let you know. Hi, I've done git bisect. and panic at jbd2_journal_put_journal_head() is caused by ae4647fb7654676fc44a97e86eb35f9f06b99f66: "jbd2: reduce journal_head size." I write just code patch which revert ae4647fb7654676fc44a97e86eb35f9f06b99f66 because I don't know the root cause. Signed-off-by: Eunbong Song --- include/linux/journal-head.h | 11 +++++++++-- 1 files changed, 9 insertions(+), 2 deletions(-) diff --git a/include/linux/journal-head.h b/include/linux/journal-head.h index 13a3da2..c18b46f 100644 --- a/include/linux/journal-head.h +++ b/include/linux/journal-head.h @@ -31,14 +31,21 @@ struct journal_head { /* * Journalling list for this buffer [jbd_lock_bh_state()] */ - unsigned b_jlist:4; + unsigned b_jlist; /* * This flag signals the buffer has been modified by * the currently running transaction * [jbd_lock_bh_state()] */ - unsigned b_modified:1; + unsigned b_modified; + + /* + * This feild tracks the last transaction id in which this buffer + * has been cowed + * [jbd_lock_bh_state()] + */ + tid_t b_cow_tid; /* * Copy of the buffer data frozen for writing to the log. -- 1.7.0.4 Thanks. {.n++%ݶw{.n+{G{ayʇڙ,jfhz_(階ݢj"mG?&~iOzv^m ?I