Hi, yesterday my machine refused to suspend several times. It was always due to khugepaged refusing to freeze. It's with 3.1.0-next-20111025. In the end, after several tries, it finally did. But it's indeed bothering me. PM: Syncing filesystems ... done. PM: Preparing system for mem sleep Freezing user space processes ... (elapsed 0.01 seconds) done. Freezing remaining freezable tasks ... Freezing of tasks failed after 20.01 seconds (1 tasks refusing to freeze, wq_busy=0): khugepaged S 0000000000000001 0 634 2 0x00800000 ffff8801c11cbc90 0000000000000046 0000000000000003 0000000000000000 ffff8801c16f73e0 ffff8801c11cbfd8 ffff8801c11cbfd8 ffff8801c11cbfd8 ffffffff81a0d020 ffff8801c16f73e0 ffff8801c11cbd08 0000000100000001 Call Trace: [<ffffffff8161e3aa>] schedule+0x3a/0x50 [<ffffffff8161e83e>] schedule_timeout+0x14e/0x220 [<ffffffff81079710>] ? init_timer_deferrable_key+0x20/0x20 [<ffffffff8161e969>] schedule_timeout_interruptible+0x19/0x20 [<ffffffff8110eda0>] khugepaged_alloc_hugepage+0xc0/0xf0 [<ffffffff8108a0d0>] ? add_wait_queue+0x60/0x60 [<ffffffff8110f455>] khugepaged+0x85/0x1280 [<ffffffff8108a0d0>] ? add_wait_queue+0x60/0x60 [<ffffffff8110f3d0>] ? collect_mm_slot+0xa0/0xa0 [<ffffffff81089937>] kthread+0x87/0x90 [<ffffffff81621834>] kernel_thread_helper+0x4/0x10 [<ffffffff810898b0>] ? kthread_worker_fn+0x1a0/0x1a0 [<ffffffff81621830>] ? gs_change+0xb/0xb Restarting tasks ... done. thanks, -- js suse labs -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>