Hello, Vasiliy. On Tue, Sep 06, 2011 at 02:15:18PM +0400, Vasiliy Kulikov wrote: > c) If dentry is lazily dropped on each access attempt (or each illegal > access) then PID2 can: > > i) read dentry line of /proc/slabinfo > ii) call link(2) against /proc/PID/fd, which invalidates the > specific dentry > iii) re-read dentry line of /proc/slabinfo. If it has decreased by > one, the dentry existed before (ii). If we really worry about this, probably the right thing to do is hiding slabinfo from mortal UIDs instead of worrying about what exactly are freed or not from each user. Thanks. -- tejun -- 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
