Hi, > On 8/29/09, Florian Zumbiehl <florz@xxxxxxxx> wrote: > > as it's quite a bit of effort to actually verify this without much > > knowlegde about the structure of udev: Could it happen that > > util_create_path() and util_delete_path() do run in parallel for > > the same directory? After all, util_create_path() does handle > > the case where creation of the directory happens in parallel > > to it running, so it doesn't seem all that unlikely to me ... > > Events on the same device are serialized. So you never have an "add" what is the "same device" identified by? > event running in parallel with a "remove" event for the same device. > That covers most cases, but there might be an exception. > > Consider two CHANGE events running in parallel. Changes to symlinks > are recorded under /dev/.udev/names. If the CHANGE events cause one > symlink to be removed, and a new symlink to be created with the same > name, I think you would get simultaneous calls to delete_path() and > create_path(). I was actually thinking about the much simpler case where there could be two completely independent objects that happen to reside in the same directory, or at least below a common path prefix, and one of them is being removed while the other one is being created. Well, I guess that that's one of those bugs I don't have enough insight into udev for fixing, as there probably is no local fix that just touches a few lines within one function - so, any suggestions as to how to proceed? Florian -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
