On Mon, 03 Nov 2008 22:24:28 -0700 Andreas Dilger <adilger@xxxxxxx> wrote: > On Nov 03, 2008 12:27 -0800, Andrew Morton wrote: > > On Tue, 28 Oct 2008 16:16:15 -0400 > > Josef Bacik <jbacik@xxxxxxxxxx> wrote: > > > + spin_lock(&journal->j_state_lock); > > > + commit_time = journal->j_average_commit_time; > > > + spin_unlock(&journal->j_state_lock); > > > > OK, the lock is needed on 32-bit machines, I guess. > > Should we pessimize the 64-bit performance in that case, for 32-bit > increasingly rare 32-bit platforms? In general no. But spinlocks also do memory ordering stuff on both 32- and 64-bit machines. Introducing differences there needs thinking about. In this case it's fsync which is going to be monster slow anyway. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
