On Thu, Jun 16, 2011 at 09:47:04AM +0800, Lai Jiangshan wrote: > In read site, we need to use local_ptr = rcu_dereference(), > and then use this local_ptr to read the content. > > In update site, we should assign/publish the new object/pointer after > the content of the new object/pointer is fully initialized, > and we can't not touch the object after the pointer assignment. > rcu_assign_pointer() is need for the assignement. > > Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxx> Actually, after thinking about this some more, I think I'm going to just change the jbd2 events to simply print MAJOR(__entry->dev) and MINOR(__entry->dev). Otherwise, the perf tool stops dies and stops interpreting the trace points when it tries to interpret "jbd2_dev_to_name(REC->dev)" in the print format. So I'll just drop jbd2_dev_to_name() completely for the jbd2 tracepoints. It's not worth it. - Ted -- 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
