On Fri, May 07, 2010 at 10:55:37AM +0100, Jamie Lokier wrote: > Josef Bacik wrote: > > 3) Lock the entire range during DIO. I originally had it so we would lock the > > extents as get_block was called, and then unlock them as the endio function was > > called, which worked great, but if we ever had an error in the submit_io hook, > > we could have locked an extent that would never be submitted for IO, so we > > wouldn't be able to unlock it, so this solution fixed that problem and made it a > > bit cleaner. > > Does this prevent concurrent DIOs to overlapping or nearby ranges? > It just prevents them from overlapping areas. Thanks, Josef -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>