On Tue, Feb 24, 2009 at 01:05:23PM -0800, Andrew Morton wrote: > > We have webcams that take photos every 5 minutes. I run a daemon > > that detects the creation of a new webcam photo then makes a thumbnail > > of it. Eventually it stopped working. I figured out that I could > > not create new watches: inotify_add_watch reported "No space left on device". > > I create all the watches with the ONESHOT parameter so they are deleted > > as soon as they are triggered. When I make it display the watch number > > it's always 3. A new watch is added only when the old watch has been > > triggered. inotify isn't recovering the memory from deleted watches. > > So we have a serious leak. > > A few fixes have gone into inotify since 2.6.28. I don't immediately > see any which would address this bug, but it would be worth testing > 2.6.29-rc6 if poss, please. Hopefully those fixes also got fed back > into 2.6.28.x, but that path is somewhat unreliable. > > If it isn't yet fixed then I'm not sure how to get it fixed, really - > inotify development is a bit quiet. Build with CONFIG_DEBUG_SLAB_LEAK (and yes, that means CONFIG_SLAB), reproduce that and see what's in /proc/slab_allocators. FWIW, we probably ought to port that stuff to SLUB et.al., but that's a different story... -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
