From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rui Miguel Silva Subject: Re: [PATCH v2]Btrfs: pwrite blocked when writing from the mmaped buffer of the same page Date: Fri, 28 Jan 2011 18:27:17 +0000 Message-ID: <201101281827.17306.rmfrfs@gmail.com> References: <1291887014-18447-1-git-send-email-xin.zhong@intel.com> <201101280354.36884.johannes.hirte@fem.tu-ilmenau.de> <1296233241.11428.23.camel@mainframe> Mime-Version: 1.0 Content-Type: Text/Plain; charset=utf-8 Cc: xin.zhong@intel.com, linux-btrfs@vger.kernel.org, johannes.hirte@fem.tu-ilmenau.de To: Maria =?utf-8?q?Wikstr=C3=B6m?= Return-path: In-Reply-To: <1296233241.11428.23.camel@mainframe> List-ID: On Friday, January 28, 2011 04:47:21 pm Maria Wikstr=C3=B6m wrote: > fre 2011-01-28 klockan 03:54 +0100 skrev Johannes Hirte: > > On Friday 28 January 2011 02:26:43 Zhong, Xin wrote: > > > Please try the fix in below link: > > > http://www.spinics.net/lists/linux-btrfs/msg08051.html > > >=20 > > > Thanks! > >=20 > > This doesn't fix it for me. At least there is a difference. Whereas= the > > svn process started consuming 100% CPU without any further interact= ion > > before, the system just hang now. The svn process starts eating the= CPU > > when I cancel the emerge via ctrl-c. Additional I see a flush-btrfs= task > > now consuming CPU time. > >=20 > > regards, > >=20 > > Johannes > >=20 > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-btr= fs" in > > the body of a message to majordomo@vger.kernel.org > > More majordomo info at http://vger.kernel.org/majordomo-info.html >=20 > The patch makes the process exit cleanly but complains that there is = no > space left. It should be a few GB but it is only a few MB!? I delete = 5GB > and controls that the space is usable. Try again but this time it alm= ost > hangs the system, I can blink the leds and move the mouse but noting > more. > I boot 2.6.36.1 and use a snapshot as root, "emerge libgcrypt" compil= es > and installs fine. Boots back into 2.6.37 and try again and the syste= m > hangs again. >=20 > // Maria >=20 Hi Maria, I had something similar with vanilla 2.6.37 just for running: cscope -R -b -q allways hang complety the process, only solution reboot. I just applied the btrfs patches that arrived in the main tree between= the=20 2.6.37 and 2.6.38-rc1 and they seem to fix the issue. I did not have the time to try to found which patch fixed the problem. Hope this could help you. Cheers, //Rui -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" = in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html