Date: Thu, 15 Sep 2005 23:30:24 +0200 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Scott Long <scottl@samsco.org> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, Pawel Jakub Dawidek <pjd@FreeBSD.org>, cvs-all@FreeBSD.org, John Baldwin <jhb@FreeBSD.org> Subject: Re: cvs commit: src/sys/kern kern_intr.c subr_sleepqueue.c src/sys/geom geom_io.c src/sys/sys proc.h Message-ID: <7524.1126819824@phk.freebsd.dk> In-Reply-To: Your message of "Thu, 15 Sep 2005 15:27:21 MDT." <4329E739.4070707@samsco.org>
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In message <4329E739.4070707@samsco.org>, Scott Long writes: >Well, there is a subtle distinction here that isn't well understood. >Sleep mutexes "block", they don't "sleep". A good rule of thumb is that userland won't get to run while mutexes are held, whereas userland may run while a thread is sleeping. -- 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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