On Mon, 10 Mar 2014 01:55:15 +0100 David Heidelberger <david.heidelberger@xxxxxxx> wrote: > Dne 2014-03-10 00:21, NeilBrown napsal: > > On Fri, 07 Mar 2014 21:30:34 +0100 David Heidelberger > > <david.heidelberger@xxxxxxx> wrote: > > > >> Hello, > >> > >> in linux kernel is DNOTIFY actually marked as deprecated, with > >> superior > >> replacement INOTIFY. > > > > Where is it marked as deprecated? I would be very surprised if dnotify > > wasn't supported indefinitely. > > > Dnotify is a directory-based per-fd file change notification system > that uses signals to communicate events to user-space. There exist > superior alternatives, but some applications may still rely on > dnotify. > > (fs/notify/dnotify/Kconfig) The fact that the new alternatives are (supposedly) superior doesn't mean the old are deprecated. > > In this moment, for modern systems I'm no aware of software actually > using DNOTIFY. I tend to use DNOTIFY because, much as I hate signals, it actually works with python while python doesn't know about the new inotify systemcall (though I know there is now some plug-in thing). I suspect there is a lot of software that uses DNOTIFY that you don't know about. > > Actually there is choice between INOTIFY and FSNOTIFY. > > > > (I have no opinion on whether rpc.idmapd should be changed to use > > inotify, > > except based on the "if it ain't broke, don't fix it" principle). > > Well, I'd like to propose build option which notify system include. It > seems like *notify support reside only in rpc.idmapd, so it shouldn't be > hard. Feel free to post a patch. You should make it clear how the change actually benefits nfs-utils. Make sure you don't use the word "deprecated" because dnotify is *not* deprecated. Thanks, NeilBrown > > David > > > > NeilBrown > > > >> > >> Is any plan to migrate rpc.idmapd to INOTIFY? As I looked, it's just > >> one > >> file. > >> > >> If there is some on-going porting, I'd like to test/report bugs/send > >> patches, otherwise I'd like to try port it. > >> > >> Thank you for answer > >> David Heidelberger (okias) > >> -- > >> To unsubscribe from this list: send the line "unsubscribe linux-nfs" > >> in > >> the body of a message to majordomo@xxxxxxxxxxxxxxx > >> More majordomo info at http://vger.kernel.org/majordomo-info.html
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