Re: inotify and /proc?

[Arnd Bergmann <arnd@arndb.de>]

On Thursday 21 June 2007, C. Scott Ananian wrote:
> 
> I'd like to make a read-only /proc file which supports inotify -- that
> is, the kernel can send change notifications to userland via the
> inotify mechanism.  I've found fsnotify_modify() (in
> include/linux/fsnotify.h) which seems to do what I want, but it takes
> a struct dentry * -- how can I get a dentry from a struct
> proc_dir_entry and increment its ref count to keep it around?  Any
> help would be appreciated.  Thanks!

It sounds a little fishy to want that in the first place. If we wanted
inotify on /proc, it should work on all files I guess, but that's
an immense amount of work.

What file are you talking about in particular?
Why does it have to be in /proc?
Why not use another notification mechanism -- blocking read(), poll(),
uevent, ...?

	Arnd <><