linux-kernel - Re: vfs: Add MS_FLUSHONFSYNC mount flag

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:	Sun, 22 Feb 2009 18:19:14 -0500
From:	Theodore Tso <tytso@....edu>
To:	Pavel Machek <pavel@....cz>
Cc:	Eric Sandeen <sandeen@...hat.com>, Jan Kara <jack@...e.cz>,
	Fernando Luis V?zquez Cao <fernando@....ntt.co.jp>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	kernel list <linux-kernel@...r.kernel.org>,
	Jens Axboe <jens.axboe@...cle.com>, fernando@....ac.jp,
	Ric Wheeler <rwheeler@...hat.com>
Subject: Re: vfs: Add MS_FLUSHONFSYNC mount flag

On Sun, Feb 22, 2009 at 03:15:33PM +0100, Pavel Machek wrote:
> 
> Sounds like posix violation to
> me... '/sys/fsync_does_not_really_sync'?

It's as much a Posix violation as noatime.  :-)

> Perhaps it is better done at glibc level? Environment variables
> already mostly have semantics you want.....

Environment variables own't allow us to switch fsync's on and off
while the process is running, so that the system can run "safe" while
it is on AC mains, but "low power" when on battery.

      	    	       	    	   	   - Ted
--
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/