From: Miklos Szeredi <miklos@szeredi.hu>
To: hbryan@us.ibm.com
Cc: akpm@osdl.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, pavel@ucw.cz, torvalds@osdl.org
Subject: Re: [PATCH] [Request for inclusion] Filesystem in Userspace
Date: Thu, 18 Nov 2004 18:28:29 +0100 [thread overview]
Message-ID: <E1CUq57-00043P-00@dorka.pomaz.szeredi.hu> (raw)
In-Reply-To: <OF28252066.81A6726A-ON88256F50.005D917A-88256F50.005EA7D9@us.ibm.com> (message from Bryan Henderson on Thu, 18 Nov 2004 09:12:59 -0800)
> A normal write is a VFS write() call, I assume. While they're going
> through the page cache, the pages are dirty, right? Is it possible that
> FUSE needs more real memory after dirtying those pages in order to finish
> cleaning them?
It's possible, but I don't see why that's a problem. If it can get
more memory it's OK. If allocation fails, then the write() will fail
with ENOMEM, if OOM killer get's to work and kills the FUSE process,
then write will return with ENOTCONN or something like that.
> What about the 3rd case: private writable mapping? How does that work?
That only reads pages and never writes them. It's just like malloc,
but prefilled with the file contents.
Miklos
next prev parent reply other threads:[~2004-11-18 17:31 UTC|newest]
Thread overview: 124+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-15 21:15 [PATCH] [Request for inclusion] Filesystem in Userspace Miklos Szeredi
2004-11-15 21:43 ` Greg KH
2004-11-15 22:35 ` Linus Torvalds
2004-11-16 9:08 ` Miklos Szeredi
2004-11-16 9:18 ` Arjan van de Ven
2004-11-16 9:40 ` Miklos Szeredi
2004-11-16 9:46 ` Arjan van de Ven
2004-11-16 9:52 ` Miklos Szeredi
2004-11-16 10:17 ` David Woodhouse
2004-11-16 10:25 ` Miklos Szeredi
2004-11-16 10:13 ` Pekka Enberg
2004-11-16 10:20 ` Miklos Szeredi
2004-11-16 10:35 ` Pekka Enberg
2004-11-16 10:42 ` Miklos Szeredi
2004-11-16 12:19 ` Pekka Enberg
2004-11-16 11:01 ` Simon Braunschmidt
2004-11-16 11:20 ` Pekka Enberg
2004-11-16 15:18 ` Ralph Corderoy
2004-11-16 12:31 ` Jan Engelhardt
2004-11-16 11:02 ` Jan Kratochvil
2004-11-16 14:01 ` Miklos Szeredi
2004-11-16 16:33 ` Greg KH
2004-11-16 16:45 ` Miklos Szeredi
2004-11-16 17:03 ` Greg KH
2004-11-16 17:50 ` Miklos Szeredi
2004-11-16 17:58 ` Greg KH
2004-11-16 19:09 ` Miklos Szeredi
2004-11-16 19:16 ` Greg KH
2004-11-16 19:30 ` Miklos Szeredi
2004-11-16 19:38 ` Greg KH
2004-11-16 19:24 ` Jan Engelhardt
2004-11-16 19:32 ` Miklos Szeredi
2004-11-16 19:42 ` Anton Altaparmakov
2004-11-16 19:48 ` Jan Engelhardt
2004-11-16 20:12 ` Miklos Szeredi
2004-11-17 15:42 ` Miklos Szeredi
2004-11-17 16:57 ` Nikita Danilov
2004-11-17 17:10 ` Jan Engelhardt
2004-11-17 17:33 ` Nikita Danilov
2004-11-17 17:38 ` Jan Engelhardt
2004-11-17 17:58 ` Nikita Danilov
2004-11-17 18:09 ` Jan Engelhardt
2004-11-17 19:58 ` Mike Waychison
2004-11-17 18:53 ` [PATCH] " Al Viro
2004-11-17 17:56 ` Miklos Szeredi
2004-11-17 18:11 ` Greg KH
2004-11-17 18:17 ` Miklos Szeredi
2004-11-17 18:20 ` Nikita Danilov
2004-11-17 17:52 ` Greg KH
2004-11-17 15:36 ` Alan Cox
2004-11-17 21:37 ` Bryan Henderson
2004-11-17 19:00 ` Pavel Machek
2004-11-17 19:45 ` Miklos Szeredi
2004-11-17 20:44 ` Pavel Machek
2004-11-18 8:17 ` Miklos Szeredi
2004-11-18 14:46 ` Pavel Machek
2004-11-21 7:42 ` Miklos Szeredi
2004-11-21 7:50 ` Miklos Szeredi
2004-11-21 9:50 ` Jan Hudec
2004-11-21 10:31 ` Miklos Szeredi
2004-11-21 10:39 ` Jan Hudec
2004-11-21 11:29 ` Miklos Szeredi
2004-11-21 11:53 ` Anton Altaparmakov
2004-11-21 12:01 ` Miklos Szeredi
2004-11-21 18:13 ` Pavel Machek
2004-11-22 16:12 ` Miklos Szeredi
2004-11-18 17:00 ` Bryan Henderson
2004-11-18 17:14 ` Miklos Szeredi
2004-11-18 18:49 ` Bryan Henderson
2004-11-18 19:12 ` Miklos Szeredi
2004-11-19 7:01 ` Jan Engelhardt
2004-11-20 12:00 ` Jan Hudec
2004-11-18 17:12 ` Bryan Henderson
2004-11-18 17:28 ` Miklos Szeredi [this message]
2004-11-18 18:01 ` Linus Torvalds
2004-11-18 17:29 ` Alan Cox
2004-11-18 18:55 ` Linus Torvalds
2004-11-18 19:28 ` Miklos Szeredi
2004-11-19 9:46 ` Pavel Machek
2004-11-18 20:57 ` Andrew Morton
2004-11-24 6:20 ` Daniel Phillips
2004-11-24 12:15 ` Avi Kivity
2004-11-24 13:05 ` Miklos Szeredi
[not found] ` <200411242001.59504.oliver@neukum.org>
2004-11-24 19:20 ` Miklos Szeredi
2004-11-25 6:26 ` Jan Hudec
2004-11-25 7:29 ` Miklos Szeredi
2004-11-25 7:47 ` Jan Hudec
2004-11-25 9:15 ` Miklos Szeredi
2004-11-25 9:54 ` Pavel Machek
2004-11-30 18:44 ` Avi Kivity
2004-11-30 19:16 ` Miklos Szeredi
2004-11-30 19:55 ` Avi Kivity
2004-11-30 21:13 ` Miklos Szeredi
2004-11-30 21:37 ` Avi Kivity
2004-11-30 21:58 ` Miklos Szeredi
2004-11-30 22:57 ` Avi Kivity
2004-11-30 23:19 ` Miklos Szeredi
2004-12-15 17:55 ` Avi Kivity
2004-12-15 21:49 ` Miklos Szeredi
2004-12-03 22:07 ` Daniel Phillips
2004-12-15 17:45 ` Avi Kivity
2004-12-01 7:16 ` Jan Hudec
2004-12-01 13:35 ` Miklos Szeredi
2004-11-30 21:54 ` Pavel Machek
2004-11-18 18:21 ` Miklos Szeredi
2004-11-18 18:31 ` Linus Torvalds
2004-11-18 18:56 ` Miklos Szeredi
2004-11-18 19:16 ` Linus Torvalds
2004-11-18 19:33 ` Miklos Szeredi
2004-11-18 19:43 ` Linus Torvalds
2004-11-18 20:05 ` Miklos Szeredi
2004-11-18 20:13 ` Nikita Danilov
2004-11-18 21:06 ` Andrew Morton
2004-11-18 21:33 ` Miklos Szeredi
2004-11-19 11:27 ` Miklos Szeredi
2004-11-27 17:07 ` Rik van Riel
2004-11-27 17:13 ` Pavel Machek
2004-12-03 22:07 ` Daniel Phillips
2004-11-18 20:16 ` Elladan
2004-11-18 18:28 ` Jamie Lokier
2004-11-18 18:47 ` Linus Torvalds
2004-11-18 19:12 ` Bryan Henderson
2004-11-18 19:51 ` Miklos Szeredi
2004-11-18 22:00 ` Jan Hudec
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