From: Daniel Phillips <phillips@bonn-fries.net>
To: llx@swissonline.ch, linux-kernel@vger.kernel.org
Subject: Re: misc questions about kernel 2.4.x internals
Date: Mon, 20 Aug 2001 19:49:05 +0200 [thread overview]
Message-ID: <20010820174231Z16441-32386+48@humbolt.nl.linux.org> (raw)
In-Reply-To: <200108201452.f7KEqxk18219@mail.swissonline.ch>
In-Reply-To: <200108201452.f7KEqxk18219@mail.swissonline.ch>
On August 20, 2001 04:52 pm, Christian Widmer wrote:
> 3) i had a look at the ll_rw_block and realised that it can block when there
> are to many buffers locked. when i use generic_make_request can i be
> shure that i wont block so that i can call it in a tasklet and don't need to
> switch to a kernel thread? i think that also needs that clustering function
> __make_request may not block. does it or does it not?
It blocks on the availability of a struct request, look at __get_request_wait.
This is how we do IO throttling in 2.4.8/9.
--
Daniel
next prev parent reply other threads:[~2001-08-20 17:42 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-20 14:52 Christian Widmer
2001-08-20 17:49 ` Daniel Phillips [this message]
2001-08-20 18:57 ` george anzinger
2001-08-20 19:46 ` Christian Widmer
2001-08-20 20:49 ` george anzinger
2001-08-20 20:52 ` Anders Peter Fugmann
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