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From: Nikita Danilov <Nikita@Namesys.COM>
To: Shaya Potter <spotter@cs.columbia.edu>
Cc: linux-fsdevel@vger.kernel.org
Subject: Re: file struct's dentry being null?
Date: Wed, 2 Jul 2003 19:58:12 +0400	[thread overview]
Message-ID: <16131.276.323954.605302@laputa.namesys.com> (raw)
In-Reply-To: <1057160991.7361.5.camel@zaphod>

Shaya Potter writes:
 > I decided to do an experiment, in fput, I did a 
 > 
 > struct file * next;
 > next = (struct file *) file->f_list.next;

->f_list.next points to the ->f_list member of next struct file rather
than to the struct file itself. This is how it works for all struct
list_head embedded into objects.

 > if ( !next->dentry )
 > 	printk("file struct: next's dentry is null, %d\n", next);
 > 
 > and I get a bunch of kernel output along these lines, with 5 different
 > next memory locations.  I only have 3 mount points, so it doesn't seem
 > to be related to that (though I would have thought it might have been
 > the list_head on the superblock).  anyways, just trying to figure out
 > what it's pointing to?
 > 
 > thanks,
 > 
 > shaya
 > 

Nikita.

 > 

  reply	other threads:[~2003-07-02 15:43 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-07-02 15:49 file struct's dentry being null? Shaya Potter
2003-07-02 15:58 ` Nikita Danilov [this message]
2003-07-02 16:00   ` Shaya Potter
2003-07-02 16:18     ` Eli Carter
2003-07-02 16:26       ` Shaya Potter
2003-07-02 16:32       ` Shaya Potter

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