linux-kernel - Re: [linux-pm] Freezer: Don't count threads waiting for frozen filesystems.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 29 Oct 2008 10:41:38 +1100
From:	Nigel Cunningham <ncunningham@...a.org.au>
To:	Miklos Szeredi <miklos@...redi.hu>
Cc:	linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [linux-pm] Freezer: Don't count threads waiting for
	frozen	filesystems.

Hi.

On Wed, 2008-10-29 at 00:24 +0100, Miklos Szeredi wrote:
> On Wed, 29 Oct 2008, Nigel Cunningham wrote:
> > Remember, though, that we're only freezing fuse at the moment, and
> > strictly one filesystem at a time. We can thus happily wait for the
> > i_mutex taken by some other process to be released.
> 
> Not going to work: you need to wait for all requests to be finished,
> but those might depend on some other fuse filesystem which has already
> been frozen.

Okay. In that case, am I right in thinking that the request waiting on
the frozen filesystem will be stuck in request_wait_answer, and the
userspace process that was trying to satisfy the request will be stuck
in the FUSE_MIGHT_FREEZE call that was invoked for the frozen
filesystem?

Regards,

Nigel

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/