Date: Tue, 26 Jul 2005 15:56:58 +0200 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Luigi Rizzo <rizzo@icir.org> Cc: s223560@studenti.ing.unipi.it, current@freebsd.org Subject: Re: multiple pending filesystem requests for the same block ? Message-ID: <79006.1122386218@phk.freebsd.dk> In-Reply-To: Your message of "Tue, 26 Jul 2005 06:54:44 PDT." <20050726065444.A37735@xorpc.icir.org>
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In message <20050726065444.A37735@xorpc.icir.org>, Luigi Rizzo writes: >(context: SoC work on pluggable disk schedulers, > http://wikitest.freebsd.org/moin.cgi/Hybrid > > >The doubt we have is the following: > > can the filesystem code have multiple pending write requests for > the same disk block ? If the filesystem does that, it will get no guarantee in which order they are written. -- 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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