On Wed, May 23, 2018 at 11:58:33AM -0400, Josef Bacik wrote: > From: Josef Bacik <jbacik@xxxxxx> > > There's a priority inversion that exists currently with btrfs fsync. In > some cases we will collect outstanding ordered extents onto a list and > only wait on them at the very last second. However this "very last > second" falls inside of a transaction handle, so if we are in a lower > priority cgroup we can end up holding the transaction open for longer > than needed, so if a high priority cgroup is also trying to fsync() > it'll see latency. > > Signed-off-by: Josef Bacik <jbacik@xxxxxx> 1-4 added to misc-next, with Filipe's reviewed-by from the first iteration. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
