Use of kqueue/kevent NOTE_EXTEND fflag in VFS

[Florent Thoumie]

I'd like to use NOTE_EXTEND in the following cases: create, link, mkdir,
mknod, rename, symlink for the parent vnode or the destination parent
vnode (in the rename case).

The rationale is that there's no way (or I don't see it) to know if a
file/directory is removed or created when monitoring a directory. Using
NOTE_EXTEND in the sense of "there's more files/directories" makes it
possible to distinguish both cases.

Another possibility could be to create new flags that would be the
equivalent of IN_{CREATE,DELETE}_{FILE,SUBDIR}.

Any thoughts?

-- 
Florent Thoumie
flz at FreeBSD.org
FreeBSD Committer

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