From: Paul Mackerras <paulus@samba.org>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Johannes Berg <johannes@sipsolutions.net>,
linux-pm@lists.linux-foundation.org, Pavel Machek <pavel@ucw.cz>
Subject: Re: shrinking memory for suspend?
Date: Fri, 4 May 2007 20:49:23 +1000 [thread overview]
Message-ID: <17979.4019.603174.454513@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <200705041102.57944.rjw@sisk.pl>
Rafael J. Wysocki writes:
> IMO, the freezing of user space and the freezing of kernel threads are two
> different issues. While the freezing of user space is pretty straightforward,
> the freezing of kernel threads is difficult.
In general I agree, but now that we have FUSE, plus the framework for
doing device drivers in userspace (I have forgotten its name), it gets
even more complicated because some userspace processes are now doing
the sorts of things that kernel threads do.
This is relevant for me because I use encfs regularly, and encfs is
based on FUSE. What happens if there is an encfs filesystem mounted,
and we freeze all userspace processes and then do a sys_sync()? Does
the system wait forever for the encfs filesystem to write out its
dirty data?
Paul.
next prev parent reply other threads:[~2007-05-04 10:49 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-30 14:24 shrinking memory for suspend? Johannes Berg
2007-04-30 15:09 ` Alan Stern
2007-04-30 15:10 ` Rafael J. Wysocki
2007-04-30 15:09 ` Johannes Berg
2007-04-30 19:57 ` Rafael J. Wysocki
2007-05-02 11:29 ` Pavel Machek
2007-05-02 14:02 ` Johannes Berg
2007-05-03 10:17 ` Rafael J. Wysocki
2007-05-03 10:34 ` Paul Mackerras
2007-05-03 10:45 ` Rafael J. Wysocki
2007-05-03 12:51 ` Paul Mackerras
2007-05-03 13:15 ` Rafael J. Wysocki
2007-05-03 16:34 ` Pavel Machek
2007-05-03 14:34 ` Alan Stern
2007-05-03 16:39 ` Rafael J. Wysocki
2007-05-03 23:32 ` Paul Mackerras
2007-05-04 9:02 ` Rafael J. Wysocki
2007-05-04 10:49 ` Paul Mackerras [this message]
2007-05-04 12:11 ` Rafael J. Wysocki
2007-05-04 15:05 ` Alan Stern
2007-05-03 11:33 ` Johannes Berg
2007-05-03 12:56 ` Rafael J. Wysocki
2007-05-04 10:48 ` Johannes Berg
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=17979.4019.603174.454513@cargo.ozlabs.ibm.com \
--to=paulus@samba.org \
--cc=johannes@sipsolutions.net \
--cc=linux-pm@lists.linux-foundation.org \
--cc=pavel@ucw.cz \
--cc=rjw@sisk.pl \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox