From: Jacob Sowles <sowlesj@gmail.com>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Getting debugfs mountpoint?
Date: Fri, 14 Sep 2012 19:17:12 -0700 [thread overview]
Message-ID: <CA+cF-pt5_SENuizLXjQOSC4gJ8hMOnc9SamALLU77RWvwFa-sQ@mail.gmail.com> (raw)
In-Reply-To: <20120915021104.GS13973@ZenIV.linux.org.uk>
The first instance of my code calls debugfs_create_file and stores a
pointer to the dentry of that directory. But when the second instance
calls debugfs_create_file, the function returns NULL because that
directory already exists, so it doesn't return the dentry that I need.
On Fri, Sep 14, 2012 at 7:11 PM, Al Viro <viro@zeniv.linux.org.uk> wrote:
> On Fri, Sep 14, 2012 at 07:07:43PM -0700, Jacob Sowles wrote:
>> Multiple instances of my code can be run simultaneously, and all
>> instances use the same debugfs directory, so I need the path to the
>> debugfs root directory so that I can use filp_open to get the dentry
>> for that directory.
>
> What's wrong with just storing a pointer to that dentry in a variable?
> And what do you want an opened file (of a directory, at that) on debugfs?
next prev parent reply other threads:[~2012-09-15 2:17 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-15 1:49 Getting debugfs mountpoint? Jacob Sowles
2012-09-15 1:57 ` Al Viro
2012-09-15 2:07 ` Jacob Sowles
2012-09-15 2:11 ` Al Viro
2012-09-15 2:17 ` Jacob Sowles [this message]
2012-09-15 2:19 ` Jacob Sowles
2012-09-15 2:27 ` Al Viro
2012-09-16 20:23 ` Rob Landley
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