Re: which dentry a page belongs to

[Shaya Potter <spotter@cs.columbia.edu>]

On Fri, 2004-04-23 at 18:01 +0100, Christoph Hellwig wrote:

> It's not evil is's fucking impossible for gods sake.

possibly, just want to be able to prove it to myself, even though your
word is pretty good.

> you can be in writepage with page->mapping->i_mmap{,shared} beeing empty.
> No way in hell you'll ever get to a dentry.

the question being in what cases will that happen, so I can make a
determination if I care about those cases.  (i.e. if the dentry is
deleted, I don't particularly care, as since I am versioning, if it's
already been deleted, don't care)

i.e. how can I determine where i_mmap{,shared} exist and when does't it?
(in file system page context).

thanks,

shaya