From: Jean Delvare <khali@linux-fr.org>
To: Andreas Schwab <schwab@suse.de>
Cc: Greg KH <gregkh@suse.de>, Tejun Heo <htejun@gmail.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: sysfs root link count broken in 2.6.22-git5
Date: Thu, 19 Jul 2007 09:42:59 +0200 [thread overview]
Message-ID: <20070719094259.6f654707@hyperion.delvare> (raw)
In-Reply-To: <jeir8hqxmj.fsf@sykes.suse.de>
Hi Andreas,
On Wed, 18 Jul 2007 22:12:52 +0200, Andreas Schwab wrote:
> Jean Delvare <khali@linux-fr.org> writes:
> > Maybe getmntent(3)? Sure I could use this, but how expensive compared
> > to a single stat(2).
>
> How about comparing the device numbers of /sys and its parent? If they
> are different then /sys is a mount point.
Nice trick, thanks. It's slightly more expensive than my current code
(two calls to stat(2) instead of one) but also more reliable. I'll
consider it when we get rid of libsysfs.
--
Jean Delvare
next prev parent reply other threads:[~2007-07-19 9:51 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-15 10:42 sysfs root link count broken in 2.6.22-git5 Jean Delvare
2007-07-17 3:48 ` Greg KH
2007-07-17 11:12 ` Jean Delvare
2007-07-17 18:36 ` Greg KH
2007-07-17 21:05 ` Jean Delvare
2007-07-18 3:05 ` Tejun Heo
2007-07-18 3:38 ` Greg KH
2007-07-18 20:06 ` Jean Delvare
2007-07-18 20:12 ` Andreas Schwab
2007-07-19 7:42 ` Jean Delvare [this message]
2007-07-18 21:21 ` Oliver Pinter
2007-07-19 0:44 ` Kay Sievers
2007-07-19 8:41 ` Jean Delvare
2007-07-19 16:02 ` Jan Engelhardt
2007-07-18 5:29 ` [PATCH] sysfs: fix sysfs root inode nlink accounting Tejun Heo
2007-07-18 5:30 ` [PATCH] sysfs: make sysfs_init_inode() static Tejun Heo
2007-07-18 14:04 ` Jean Delvare
2007-07-18 14:02 ` [PATCH] sysfs: fix sysfs root inode nlink accounting Jean Delvare
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