I just booted into a current git kernel and got 6 of these in about 1h30min of usage [ 559.556879] ------------[ cut here ]------------ [ 559.556913] WARNING: at fs/btrfs/extent_map.c:226 unpin_extent_cache+0x5f/0xb0 [btrfs]() [ 559.556915] Hardware name: K53E [ 559.556956] Modules linked in: fuse xt_limit af_packet ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_raw xt_NOTRACK ipt_REJECT iptable_raw iptable_filter ip6table_mangle nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack_ipv4 nf_defrag_ipv4 ip_tables xt_conntrack nf_conntrack ip6table_filter ip6_tables x_tables cpufreq_conservative cpufreq_userspace cpufreq_powersave acpi_cpufreq mperf arc4 rtl8192ce rtl8192c_common rtlwifi mac80211 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_timer cfg80211 asus_nb_wmi asus_wmi snd sr_mod soundcore cdrom uvcvideo snd_page_alloc sparse_keymap pci_hotplug videobuf2_core sg rfkill serio_raw videodev videobuf2_vmalloc videobuf2_memops coretemp atl1c joydev pcspkr battery lpc_ich microcode wmi ac mei i2c_i801 xhci_hcd autofs4 btrfs zlib_deflate i915 drm_kms_helper drm i2c_algo_bit thermal video processor button thermal_sys [ 559.556961] Pid: 2589, comm: btrfs-endio-wri Not tainted 3.5.0-rc1-catalin-00110-g71fae7e #20 [ 559.556962] Call Trace: [ 559.556971] [<ffffffff8103e11f>] warn_slowpath_common+0x7f/0xc0 [ 559.556974] [<ffffffff8103e17a>] warn_slowpath_null+0x1a/0x20 [ 559.556991] [<ffffffffa016970f>] unpin_extent_cache+0x5f/0xb0 [btrfs] [ 559.557006] [<ffffffffa015eb82>] btrfs_finish_ordered_io+0x362/0x3c0 [btrfs] [ 559.557022] [<ffffffffa015ebf5>] finish_ordered_fn+0x15/0x20 [btrfs] [ 559.557038] [<ffffffffa0189200>] worker_loop+0xa0/0x300 [btrfs] [ 559.557053] [<ffffffffa0189160>] ? check_pending_worker_creates.isra.1+0xe0/0xe0 [btrfs] [ 559.557058] [<ffffffff81061433>] kthread+0x93/0xa0 [ 559.557063] [<ffffffff815b08e4>] kernel_thread_helper+0x4/0x10 [ 559.557066] [<ffffffff810613a0>] ? kthread_freezable_should_stop+0x70/0x70 [ 559.557069] [<ffffffff815b08e0>] ? gs_change+0x13/0x13 [ 559.557071] ---[ end trace ced3cc4ce35eb913 ]--- I didn't see these in 3.4 or previous kernels. However, despite of these, it seems to me that the latency of the desktop has improved, with previous kernels it was quite bad during IO. With 3.5 I got *some* seconds when other windows barely worked during a big git pull but I'm quite sure this kernel is smoother than older ones so thanks for your work! -- 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
