Re: [PATCH] nfs-utils: make auth_reload respect sub-second timestamps on etab

["J. Bruce Fields" <bfields@fieldses.org>]

On Thu, Apr 26, 2007 at 01:00:56PM -0400, Jeff Layton wrote:
> Not if the inode number is reused. That can occur on some filesystems if
> nothing is holding it open. Then again, if we're opening a new file and
> renaming it to the old name, then that might not be an issue here. Let me
> play with that idea and see...

Hm.  Grepping around: I didn't realize ext2/3/4 seem to have a
GETVERSION ioctl that returns the generation number.  But I don't know
if there's any more filesystem-independent way to do that.

(Is there some better way?  I don't understand why people would work so
hard on change notification without having a simple way to poll for
changes as well--otherwise you lose track of everything the moment the
watcher goes away, and you end up with beagle having to reread your
entire filesystem after every reboot.)

--b.

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