Date: Mon, 03 Nov 2003 22:45:53 -0800 From: Kirk McKusick <mckusick@beastie.mckusick.com> To: Brian Fundakowski Feldman <green@freebsd.org> Cc: current@freebsd.org Subject: Re: runningbufspace related lock-ups with md(4)/UFS/SU (PATCH ?) Message-ID: <200311040645.hA46jreN029021@beastie.mckusick.com> In-Reply-To: Your message of "Thu, 23 Oct 2003 12:39:50 PDT."
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> To: Kirk McKusick <mckusick@mckusick.com> > From: "Brian F. Feldman" <green@freebsd.org> > Date: Thu, 23 Oct 2003 15:46:53 -0400 > Cc: current@freebsd.org > Subject: Re: runningbufspace related lock-ups with md(4)/UFS/SU (PATCH ?) > > Kirk McKusick <mckusick@beastie.mckusick.com> wrote: > > I have been able to reproduce your hang on my system and your suggested > > fix does prevent it. I am going to run some more buffer starvation-type > > tests on it this week and if they do not cause other problems, I will > > put in your suggested fix. > > Thanks, Kirk; seems everyone who's been able to reproduce it can't do so > anymore when the synchers are disallowed from waiting on runningbufspace > (a couple extra people testing it that haven't spoken up on the list). > > -- > Brian Fundakowski Feldman \'[ FreeBSD ]''''''''''\ > <> green@FreeBSD.org \ The Power to Serve! \ > Opinions expressed are my own. \,,,,,,,,,,,,,,,,,,,,,,\ I have put in your suggested patch to avoid the runningbufspace related lock-ups with md(4)/UFS/SU. Kirk McKusick =-=-=-=-=-= From: Kirk McKusick <mckusick@FreeBSD.org> Date: Mon, 3 Nov 2003 22:30:01 -0800 (PST) To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern vfs_bio.c X-FreeBSD-CVS-Branch: HEAD Sender: owner-src-committers@FreeBSD.org mckusick 2003/11/03 22:30:01 PST FreeBSD src repository Modified files: sys/kern vfs_bio.c Log: Allow the bufdaemon and update daemon processes to skip the waitrunningbufspace() calls so that they are always able to proceed and clean up buffer space. Submitted by: Brian Fundakowski Feldman <green@freebsd.org> Revision Changes Path 1.420 +9 -5 src/sys/kern/vfs_bio.c
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