On Thu, Apr 24, 2014 at 02:57:40PM -0400, Matthew Wilcox wrote: > By calling the device driver to write the page directly, we avoid > allocating a BIO, which allows us to free memory without allocating > memory. I got handed some performance numbers last night! Next time you're updating the patch description, please use: By calling the device driver to write the page directly, we avoid allocating a BIO, which allows us to free memory without allocating memory. When running a swap-heavy benchmark, system time is reduced by about 20%. Tested-by: Dheeraj Reddy <dheeraj.reddy@xxxxxxxxx> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@xxxxxxxxx> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>