On Thu, Apr 24, 2008 at 01:25:58PM -0400, Erez Zadok wrote: > Al, any near-term plans for sb-level "want write" locking as we discussed > briefly at LSF? Being able to do so for copyup in unionfs will hopefully > allow me to prevent concurrent topology changes. That's pretty close to the top. > the two directories that need locking. This rename-locking protocol appears > to be a special case of the sb-level "want write" idea, right? Not really - that one doesn't provide any exclusion between writers and that's what we want from rename/rename. Take a look at Documentation/filesystems/directory-locking for details of locking scheme... -- 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
