From: Christian Widmer <cwidmer@iiic.ethz.ch>
To: linux-kernel@vger.kernel.org
Subject: does the request function block
Date: Tue, 28 Aug 2001 20:13:45 +0200 [thread overview]
Message-ID: <200108281813.f7SIDjY03688@mail.swissonline.ch> (raw)
does the request function of a bock device driver to be attomic or may it
block? in the linux device driver 2 it says that it must be attomic and
may not block. that makes sense to me since it also sais that the bottom-
half of the driver will call the request function too. but this is not realy
nessesery when i remove all request before releasing the io_request_lock.
on the other side block devices like nbd or brbd do send date using a socket
in there request function.
who is right and why?
next reply other threads:[~2001-08-28 18:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-28 18:13 Christian Widmer [this message]
2001-08-28 18:28 ` Peter T. Breuer
2001-08-28 19:15 ` Christian Widmer
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