Messages in this thread | | | Date | Mon, 28 Jun 1999 22:20:04 +0200 | From | Jamie Lokier <> | Subject | Re: VFS event hooks |
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Alan Cox wrote: > Ted Tso pointed something out at Expo we'd missed. There is a problem with > using poll() as there is no "changed since last time" case. That means there > is no way to do > > { > if(its_changed() > do_thing > poll() > } > > as the poll won't be working for "since last poll".
Perhaps my proposal for a modification-sensing serial number could be extended to work on all files as long as they're open?
Summary:
- New files created in "Modified" state. - Reading serial number changes file to "Not-Modified". - Modifying file sets "Modified" state -- and if previous state was "Not-Modified", increments serial number once. - "Not-Modifed"->"Modified" transition propagates to parent - directory.
-- Jamie
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