> If the system 512MB memory, DEF_PRIORITY mean 128kB scan and It takes 4096 > shrink_page_list() calls to scan 128kB (i.e. 128kB/32=4096) memory. Err you must forgot the page size. 128kB means 128kB/4kB=32 pages which fit exactly into one SWAP_CLUSTER_MAX batch. The shrink_page_list() call times has nothing to do DEF_PRIORITY. Thanks, Fengguang -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html