Date: Thu, 11 Mar 2004 07:13:07 +0100 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Alexey Dokuchaev <danfe@nsu.ru> Cc: cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/sys mdioctl.h src/sys/dev/md md.c src/sbin/mdconfig mdconfig.8 mdconfig.c Message-ID: <48203.1078985587@critter.freebsd.dk> In-Reply-To: Your message of "Thu, 11 Mar 2004 10:47:22 %2B0600." <20040311044722.GA93643@regency.nsu.ru>
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In message <20040311044722.GA93643@regency.nsu.ru>, Alexey Dokuchaev writes: >> Log: >> Fix a long-standing deadlock issue with vnode backed md(4) devices: >> >Just out of curiosity, is your fix a real fix, or just a clever >workaround? Meaning, there are some very in-depth issues involved that >prevent this problem from being fixed without performance penalty? That is a matter of taste more than anything else. A vnode backed md(4) device is technically a layering violation, so either the syncer or the md(4) code itself (or both) needs to be aware of the special case. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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