From: Alan Cox <alan@redhat.com>
To: dhowells@redhat.com (David Howells)
Cc: torvalds@transmeta.com, alan@redhat.com,
linux-kernel@vger.kernel.org, dhowells@redhat.com
Subject: Re: manipulating sigmask from filesystems and drivers
Date: Wed, 31 Jul 2002 07:58:10 -0400 (EDT) [thread overview]
Message-ID: <200207311158.g6VBwAa29820@devserv.devel.redhat.com> (raw)
In-Reply-To: <15189.1028116363@warthog.cambridge.redhat.com> from "David Howells" at Jul 31, 2002 12:52:43 PM
> OpenAFS filesystem driver, and it tries to achieve uninterruptible I/O waiting
> by the following means:
Bletch
> The reason for them doing this is so that they can get the process to appear
> in the "S" state and thus avoid increasing the load average.
Thats come up enough I wish there was a way to distinguish 'disk wait'
and uninterruptible. Its an old V7 handwaving load average estimation trick
that lived too long IMHO
> Can you comment on whether a driver is allowed to block signals like this, and
> whether they should be waiting in TASK_UNINTERRUPTIBLE?
NFS does something similar in hard mount mode.
next prev parent reply other threads:[~2002-07-31 11:54 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-31 11:52 manipulating sigmask from filesystems and drivers David Howells
2002-07-31 11:58 ` Alan Cox [this message]
2002-08-01 19:09 ` Linus Torvalds
2002-08-01 20:10 ` David Woodhouse
2002-08-01 20:21 ` Linus Torvalds
2002-08-01 20:47 ` Roman Zippel
2002-08-01 20:51 ` Linus Torvalds
2002-08-01 21:15 ` Roman Zippel
2002-08-01 21:42 ` Linus Torvalds
2002-08-01 22:29 ` David Woodhouse
2002-08-01 22:40 ` Linus Torvalds
2002-08-01 22:50 ` David Woodhouse
2002-08-02 15:59 ` yodaiken
2002-08-01 22:35 ` Roman Zippel
2002-08-01 23:30 ` Linus Torvalds
2002-08-02 0:31 ` Olivier Galibert
2002-08-02 8:00 ` Kai Henningsen
2002-08-02 10:02 ` Roman Zippel
2002-08-02 12:38 ` Ryan Anderson
2002-08-02 15:39 ` Linus Torvalds
2002-08-02 16:00 ` Benjamin LaHaise
2002-08-02 16:27 ` Linus Torvalds
2002-08-02 17:13 ` Jamie Lokier
2002-08-02 17:29 ` Linus Torvalds
2002-08-02 17:57 ` Trond Myklebust
2002-08-02 18:10 ` Linus Torvalds
2002-08-02 17:33 ` Oliver Neukum
2002-08-03 18:27 ` David Woodhouse
2002-10-17 8:32 ` David Woodhouse
2002-08-02 19:27 ` Roman Zippel
2002-08-02 7:31 ` Giuliano Pochini
[not found] ` <mailman.1028232841.11555.linux-kernel2news@redhat.com>
2002-08-01 23:37 ` Pete Zaitcev
2002-08-01 23:46 ` David Woodhouse
[not found] <0C01A29FBAE24448A792F5C68F5EA47D2D3E2B@nasdaq.ms.ensim.com>
2002-08-02 17:57 ` Paul Menage
2002-08-02 23:25 ` Ryan Anderson
2002-08-02 23:30 ` Paul Menage
-- strict thread matches above, loose matches on Subject: below --
2002-08-02 18:24 Jesse Pollard
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