On Mon, May 05, 2008 at 03:06:23PM +0200, Enrico Weigelt wrote:

quoted text
> We could just add another call vector to struct file_operations,
> as replacement for link_path_walk() - if it's zero, the original
> function is used. This way an filesystem can do the walktrough
> by it's own, but doesn't need to.
> 
> 
> What do you think about this ?

That you have quite forgotten about mounts.  And we *REALLY* don't
want to shift the entire logics of link_path_walk() into filesystems -
this is insane.  Even "let's follow that symlink" part alone, not to
mention mountpoint handling, populating dcache, etc.
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