Jul 21 22:30:34 smallvault22 kernel: [377419.794212] BTRFS info (device loop0): disk space caching is enabled
Jul 21 22:30:34 smallvault22 kernel: [377419.794449] BTRFS: has skinny extents
Jul 21 22:30:43 smallvault22 kernel: [377429.488153] BTRFS info (device loop2): disk space caching is enabled
Jul 21 22:30:43 smallvault22 kernel: [377429.488389] BTRFS: has skinny extents
Jul 21 22:30:44 smallvault22 kernel: [377429.710041] BTRFS info (device loop2): disk space caching is enabled
Jul 21 22:30:44 smallvault22 kernel: [377429.710279] BTRFS: has skinny extents
Jul 21 22:30:44 smallvault22 kernel: [377429.961130] BTRFS info (device loop0): disk space caching is enabled
Jul 21 22:30:44 smallvault22 kernel: [377429.961367] BTRFS: has skinny extents
Jul 21 22:32:04 smallvault22 kernel: [377510.277526] BTRFS: device fsid 7d53957c-847b-4dd6-8a70-63870a34c7f7 devid 1 transid 1222 / dev/loop0
Jul 21 22:32:04 smallvault22 kernel: [377510.294142] BTRFS info (device loop0): disk space caching is enabled
Jul 21 22:32:04 smallvault22 kernel: [377510.294387] BTRFS: has skinny extents
Jul 21 22:32:08 smallvault22 kernel: [377514.199173] BTRFS info (device loop0): new size for /dev/loop0 is 214748364800
Jul 21 22:32:09 smallvault22 kernel: [377514.722687] BTRFS info (device loop0): disk space caching is enabled
Jul 21 22:32:09 smallvault22 kernel: [377514.722924] BTRFS: has skinny extents
Jul 21 22:32:09 smallvault22 kernel: [377514.833162] INFO: task kworker/u32:9:27574 blocked for more than 120 seconds.
Jul 21 22:32:09 smallvault22 kernel: [377514.833543]       Tainted: G           O    4.4.70-backup2 #93
Jul 21 22:32:09 smallvault22 kernel: [377514.833767] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jul 21 22:32:09 smallvault22 kernel: [377514.834153] kworker/u32:9   D ffff880046142ec8     0 27574      2 0x00000000
Jul 21 22:32:09 smallvault22 kernel: [377514.834536] Workqueue: btrfs-extent-refs btrfs_extent_refs_helper [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.834825]  ffff880046142ec8 ffff8802598b62f0 ffff880046142e90 ffffffff00000000
Jul 21 22:32:09 smallvault22 kernel: [377514.835468]  ffff88046bb19a00 ffff88038b469a00 ffff880046144000 ffff8802598b62f0
Jul 21 22:32:09 smallvault22 kernel: [377514.836097]  ffff88038b469a00 ffff88038b469a00 ffff880046142f08 ffff880046142ee0
Jul 21 22:32:09 smallvault22 kernel: [377514.836724] Call Trace:
Jul 21 22:32:09 smallvault22 kernel: [377514.836947]  [<ffffffff816b41ac>] schedule+0x3c/0x90
Jul 21 22:32:09 smallvault22 kernel: [377514.837206]  [<ffffffffa0ab90b5>] btrfs_tree_read_lock+0xe5/0x140 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.837437]  [<ffffffff810a3390>] ? wait_woken+0xb0/0xb0
Jul 21 22:32:09 smallvault22 kernel: [377514.837669]  [<ffffffffa0a4f584>] btrfs_read_lock_root_node+0x34/0x50 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.838054]  [<ffffffffa0a544db>] btrfs_search_slot+0x70b/0x9d0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.838289]  [<ffffffff810ae74d>] ? trace_hardirqs_on+0xd/0x10
Jul 21 22:32:09 smallvault22 kernel: [377514.838524]  [<ffffffffa0a4f16a>] ? btrfs_alloc_path+0x1a/0x20 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.838760]  [<ffffffffa0a6e5a7>] btrfs_lookup_file_extent+0x37/0x40 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.838999]  [<ffffffffa0a803b5>] btrfs_get_extent+0x155/0xb30 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.839249]  [<ffffffffa0a99caa>] ? __set_extent_bit+0x15a/0x580 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.839491]  [<ffffffffa0a9d70b>] __do_readpage+0x1ab/0x8a0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.839728]  [<ffffffffa0a97da3>] ? btrfs_lookup_ordered_range+0xc3/0x170 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.840126]  [<ffffffffa0a80260>] ? btrfs_real_readdir+0x5b0/0x5b0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.840358]  [<ffffffff810ae74d>] ? trace_hardirqs_on+0xd/0x10
Jul 21 22:32:09 smallvault22 kernel: [377514.840593]  [<ffffffffa0a97da3>] ? btrfs_lookup_ordered_range+0xc3/0x170 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.840982]  [<ffffffffa0a9e15e>] __extent_readpages.constprop.40+0x27e/0x2a0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.841382]  [<ffffffffa0a80260>] ? btrfs_real_readdir+0x5b0/0x5b0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.841621]  [<ffffffffa0a9f1eb>] extent_readpages+0x18b/0x1e0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.841857]  [<ffffffffa0a80260>] ? btrfs_real_readdir+0x5b0/0x5b0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.842099]  [<ffffffffa0a7d89f>] btrfs_readpages+0x1f/0x30 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.842327]  [<ffffffff8116ab45>] __do_page_cache_readahead+0x275/0x310
Jul 21 22:32:09 smallvault22 kernel: [377514.842571]  [<ffffffff8116aa30>] ? __do_page_cache_readahead+0x160/0x310
Jul 21 22:32:09 smallvault22 kernel: [377514.842797]  [<ffffffff8116adb0>] ondemand_readahead+0x1d0/0x440
Jul 21 22:32:09 smallvault22 kernel: [377514.843023]  [<ffffffff811b6cc2>] ? kmem_cache_alloc_trace+0x202/0x310
Jul 21 22:32:09 smallvault22 kernel: [377514.843259]  [<ffffffff8116b1b1>] page_cache_sync_readahead+0x31/0x50
Jul 21 22:32:09 smallvault22 kernel: [377514.843497]  [<ffffffffa0ac3fc1>] __load_free_space_cache+0x1c1/0x650 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.843885]  [<ffffffffa0ac4540>] load_free_space_cache+0xf0/0x1b0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.844130]  [<ffffffffa0a597b7>] cache_block_group+0x1b7/0x3d0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.844360]  [<ffffffff810a3390>] ? wait_woken+0xb0/0xb0
Jul 21 22:32:09 smallvault22 kernel: [377514.844591]  [<ffffffffa0a68c9f>] find_free_extent+0x7bf/0xf40 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.844825]  [<ffffffffa0a69487>] btrfs_reserve_extent+0x67/0x150 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.845059]  [<ffffffffa0a69669>] btrfs_alloc_tree_block+0xf9/0x480 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.845300]  [<ffffffffa0a4ff0c>] __btrfs_cow_block+0x12c/0x5a0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.845536]  [<ffffffffa0a50516>] btrfs_cow_block+0x116/0x2a0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.845769]  [<ffffffffa0a53fa6>] btrfs_search_slot+0x1d6/0x9d0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.846003]  [<ffffffffa0a5b175>] lookup_inline_extent_backref+0xc5/0x5b0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.846389]  [<ffffffff810812d2>] ? __might_sleep+0x52/0xb0
Jul 21 22:32:09 smallvault22 kernel: [377514.846622]  [<ffffffffa0a4f16a>] ? btrfs_alloc_path+0x1a/0x20 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.846856]  [<ffffffffa0a5d701>] __btrfs_free_extent.isra.67+0xf1/0xcb0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.851247]  [<ffffffffa0ac985d>] ? btrfs_merge_delayed_refs+0x8d/0x630 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.851635]  [<ffffffffa0a61982>] ? __btrfs_run_delayed_refs+0x192/0x1630 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.852018]  [<ffffffffa0a620c0>] __btrfs_run_delayed_refs+0x8d0/0x1630 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.852414]  [<ffffffffa0a7a2eb>] ? join_transaction.isra.13+0x2b/0x440 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.852820]  [<ffffffffa0a7a3d2>] ? join_transaction.isra.13+0x112/0x440 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.853214]  [<ffffffffa0a65c12>] btrfs_run_delayed_refs+0x82/0x2c0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.853452]  [<ffffffffa0a65ee4>] delayed_ref_async_start+0x94/0xb0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.853688]  [<ffffffffa0aae983>] normal_work_helper+0xe3/0x600 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.853924]  [<ffffffffa0aaf102>] btrfs_extent_refs_helper+0x12/0x20 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.854162]  [<ffffffff81073766>] process_one_work+0x1e6/0x6b0
Jul 21 22:32:09 smallvault22 kernel: [377514.854387]  [<ffffffff810736dd>] ? process_one_work+0x15d/0x6b0
Jul 21 22:32:09 smallvault22 kernel: [377514.854611]  [<ffffffff81073c99>] worker_thread+0x69/0x480
Jul 21 22:32:09 smallvault22 kernel: [377514.854833]  [<ffffffff81073c30>] ? process_one_work+0x6b0/0x6b0
Jul 21 22:32:09 smallvault22 kernel: [377514.855058]  [<ffffffff8107a37d>] kthread+0x11d/0x140
Jul 21 22:32:09 smallvault22 kernel: [377514.855285]  [<ffffffff8107a260>] ? kthread_create_on_node+0x220/0x220
Jul 21 22:32:09 smallvault22 kernel: [377514.855513]  [<ffffffff816ba8ff>] ret_from_fork+0x3f/0x70
Jul 21 22:32:09 smallvault22 kernel: [377514.855735]  [<ffffffff8107a260>] ? kthread_create_on_node+0x220/0x220
Jul 21 22:32:09 smallvault22 kernel: [377514.855959] INFO: lockdep is turned off.
Jul 21 22:32:09 smallvault22 kernel: [377514.856188] INFO: task kworker/u32:12:27575 blocked for more than 120 seconds.
Jul 21 22:32:09 smallvault22 kernel: [377514.856562]       Tainted: G           O    4.4.70-backup2 #93
Jul 21 22:32:09 smallvault22 kernel: [377514.856784] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jul 21 22:32:09 smallvault22 kernel: [377514.857169] kworker/u32:12  D ffff88001b903a68     0 27575      2 0x00000000
Jul 21 22:32:09 smallvault22 kernel: [377514.857532] Workqueue: btrfs-freespace-write btrfs_freespace_write_helper [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.857967]  ffff88001b903a68 ffff8802598b62f0 ffff88001b903a30 ffffffff00000000
Jul 21 22:32:09 smallvault22 kernel: [377514.858599]  ffff88046bb38000 ffff88046b6eb400 ffff88001b904000 ffff8802598b62f0
Jul 21 22:32:09 smallvault22 kernel: [377514.859228]  ffff88046b6eb400 ffff88046b6eb400 ffff88001b903aa8 ffff88001b903a80
Jul 21 22:32:09 smallvault22 kernel: [377514.859849] Call Trace:
Jul 21 22:32:09 smallvault22 kernel: [377514.860066]  [<ffffffff816b41ac>] schedule+0x3c/0x90
Jul 21 22:32:09 smallvault22 kernel: [377514.860306]  [<ffffffffa0ab90b5>] btrfs_tree_read_lock+0xe5/0x140 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.860536]  [<ffffffff810a3390>] ? wait_woken+0xb0/0xb0
Jul 21 22:32:09 smallvault22 kernel: [377514.860766]  [<ffffffffa0a4f584>] btrfs_read_lock_root_node+0x34/0x50 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.861154]  [<ffffffffa0a544db>] btrfs_search_slot+0x70b/0x9d0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.861384]  [<ffffffff810812d2>] ? __might_sleep+0x52/0xb0
Jul 21 22:32:09 smallvault22 kernel: [377514.861618]  [<ffffffffa0a9190d>] btrfs_mark_extent_written+0x9d/0x9c0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.861993]  [<ffffffff816b9ba7>] ? _raw_spin_unlock+0x27/0x40
Jul 21 22:32:09 smallvault22 kernel: [377514.862237]  [<ffffffffa0a7a3d2>] ? join_transaction.isra.13+0x112/0x440 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.862640]  [<ffffffffa0a7c15a>] ? start_transaction+0x9a/0x5b0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.862874]  [<ffffffffa0a84cf5>] btrfs_finish_ordered_io+0x415/0x630 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.863269]  [<ffffffffa0aae900>] ? normal_work_helper+0x60/0x600 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.863507]  [<ffffffffa0aae900>] ? normal_work_helper+0x60/0x600 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.863742]  [<ffffffffa0a851b5>] finish_ordered_fn+0x15/0x20 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.863975]  [<ffffffffa0aaea5d>] normal_work_helper+0x1bd/0x600 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.864220]  [<ffffffffa0aaf082>] btrfs_freespace_write_helper+0x12/0x20 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.864597]  [<ffffffff81073766>] process_one_work+0x1e6/0x6b0
Jul 21 22:32:09 smallvault22 kernel: [377514.864820]  [<ffffffff810736dd>] ? process_one_work+0x15d/0x6b0
Jul 21 22:32:09 smallvault22 kernel: [377514.865043]  [<ffffffff81073c99>] worker_thread+0x69/0x480
Jul 21 22:32:09 smallvault22 kernel: [377514.865275]  [<ffffffff81073c30>] ? process_one_work+0x6b0/0x6b0
Jul 21 22:32:09 smallvault22 kernel: [377514.865500]  [<ffffffff8107a37d>] kthread+0x11d/0x140
Jul 21 22:32:09 smallvault22 kernel: [377514.865722]  [<ffffffff8107a260>] ? kthread_create_on_node+0x220/0x220
Jul 21 22:32:09 smallvault22 kernel: [377514.865946]  [<ffffffff816ba8ff>] ret_from_fork+0x3f/0x70
Jul 21 22:32:09 smallvault22 kernel: [377514.866180]  [<ffffffff8107a260>] ? kthread_create_on_node+0x220/0x220
Jul 21 22:32:09 smallvault22 kernel: [377514.866404] INFO: lockdep is turned off.
Jul 21 22:32:09 smallvault22 kernel: [377514.866625] INFO: task btrfs-transacti:31625 blocked for more than 120 seconds.
Jul 21 22:32:09 smallvault22 kernel: [377514.866997]       Tainted: G           O    4.4.70-backup2 #93
Jul 21 22:32:09 smallvault22 kernel: [377514.867228] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jul 21 22:32:09 smallvault22 kernel: [377514.867603] btrfs-transacti D ffff880235483958     0 31625      2 0x00000000
Jul 21 22:32:09 smallvault22 kernel: [377514.867951]  ffff880235483958 ffff88000460ad90 ffff880235483920 ffffffff00000000
Jul 21 22:32:09 smallvault22 kernel: [377514.868580]  ffff88046bb38000 ffff88046a833400 ffff880235484000 ffff88000460ad90
Jul 21 22:32:09 smallvault22 kernel: [377514.869209]  ffff88046a833400 ffff88046a833400 ffff880235483998 ffff880235483970
Jul 21 22:32:09 smallvault22 kernel: [377514.869828] Call Trace:
Jul 21 22:32:09 smallvault22 kernel: [377514.870044]  [<ffffffff816b41ac>] schedule+0x3c/0x90
Jul 21 22:32:09 smallvault22 kernel: [377514.870285]  [<ffffffffa0ab90b5>] btrfs_tree_read_lock+0xe5/0x140 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.870514]  [<ffffffff810a3390>] ? wait_woken+0xb0/0xb0
Jul 21 22:32:09 smallvault22 kernel: [377514.870743]  [<ffffffffa0a4f584>] btrfs_read_lock_root_node+0x34/0x50 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.871135]  [<ffffffffa0a544db>] btrfs_search_slot+0x70b/0x9d0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.871363]  [<ffffffff810ae526>] ? trace_hardirqs_on_caller+0x16/0x230
Jul 21 22:32:09 smallvault22 kernel: [377514.871595]  [<ffffffffa0a5b175>] lookup_inline_extent_backref+0xc5/0x5b0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.871969]  [<ffffffff810812d2>] ? __might_sleep+0x52/0xb0
Jul 21 22:32:09 smallvault22 kernel: [377514.872209]  [<ffffffffa0a4f16a>] ? btrfs_alloc_path+0x1a/0x20 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.872444]  [<ffffffffa0a5d701>] __btrfs_free_extent.isra.67+0xf1/0xcb0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.872844]  [<ffffffffa0ac985d>] ? btrfs_merge_delayed_refs+0x8d/0x630 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.873236]  [<ffffffffa0a61982>] ? __btrfs_run_delayed_refs+0x192/0x1630 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.873619]  [<ffffffffa0a620c0>] __btrfs_run_delayed_refs+0x8d0/0x1630 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.873992]  [<ffffffff810d4ea4>] ? lock_timer_base.isra.35+0x54/0x70
Jul 21 22:32:09 smallvault22 kernel: [377514.874238]  [<ffffffffa0a7a2eb>] ? join_transaction.isra.13+0x2b/0x440 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.874622]  [<ffffffffa0a65c12>] btrfs_run_delayed_refs+0x82/0x2c0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.874856]  [<ffffffffa0a7b5f3>] btrfs_commit_transaction+0x43/0xb10 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.875247]  [<ffffffffa0a769ac>] transaction_kthread+0x22c/0x290 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.875483]  [<ffffffffa0a76780>] ? btrfs_cleanup_transaction+0x650/0x650 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.875857]  [<ffffffff8107a37d>] kthread+0x11d/0x140
Jul 21 22:32:09 smallvault22 kernel: [377514.876083]  [<ffffffff8107a260>] ? kthread_create_on_node+0x220/0x220
Jul 21 22:32:09 smallvault22 kernel: [377514.876315]  [<ffffffff816ba8ff>] ret_from_fork+0x3f/0x70
Jul 21 22:32:09 smallvault22 kernel: [377514.876537]  [<ffffffff8107a260>] ? kthread_create_on_node+0x220/0x220
Jul 21 22:32:09 smallvault22 kernel: [377514.876760] INFO: lockdep is turned off.
Jul 21 22:32:09 smallvault22 kernel: [377514.876977] INFO: task umount:31696 blocked for more than 120 seconds.
Jul 21 22:32:09 smallvault22 kernel: [377514.877210]       Tainted: G           O    4.4.70-backup2 #93
Jul 21 22:32:09 smallvault22 kernel: [377514.877432] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jul 21 22:32:09 smallvault22 kernel: [377514.877804] umount          D ffff88025234b7b8     0 31696  31315 0x00000000
Jul 21 22:32:09 smallvault22 kernel: [377514.878163]  ffff88025234b7b8 ffff8800411adcb0 ffff88025234b780 0000000000000000
Jul 21 22:32:09 smallvault22 kernel: [377514.878781]  ffff88046bb1b400 ffff88044b59ce00 ffff88025234c000 ffff88018289b840
Jul 21 22:32:09 smallvault22 kernel: [377514.879408]  ffff88001910a400 ffff8800411adcb0 ffff8800411adc00 ffff88025234b7d0
Jul 21 22:32:09 smallvault22 kernel: [377514.880025] Call Trace:
Jul 21 22:32:09 smallvault22 kernel: [377514.880250]  [<ffffffff816b41ac>] schedule+0x3c/0x90
Jul 21 22:32:09 smallvault22 kernel: [377514.880482]  [<ffffffffa0a59736>] cache_block_group+0x136/0x3d0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.880707]  [<ffffffff810a3390>] ? wait_woken+0xb0/0xb0
Jul 21 22:32:09 smallvault22 kernel: [377514.880936]  [<ffffffffa0a68c9f>] find_free_extent+0x7bf/0xf40 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.881180]  [<ffffffffa0a69487>] btrfs_reserve_extent+0x67/0x150 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.881416]  [<ffffffffa0a69669>] btrfs_alloc_tree_block+0xf9/0x480 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.881648]  [<ffffffffa0a4ff0c>] __btrfs_cow_block+0x12c/0x5a0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.881879]  [<ffffffffa0a50516>] btrfs_cow_block+0x116/0x2a0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.882121]  [<ffffffffa0a53fa6>] btrfs_search_slot+0x1d6/0x9d0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.882357]  [<ffffffffa0a703bf>] btrfs_lookup_inode+0x2f/0xa0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.882606]  [<ffffffffa0a7e7de>] btrfs_update_inode_item+0x4e/0x100 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.882839]  [<ffffffffa0a8181b>] btrfs_update_inode+0x6b/0x100 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.883071]  [<ffffffffa0a66798>] cache_save_setup+0x98/0x3b0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.883313]  [<ffffffffa0a69d9a>] ? btrfs_start_dirty_block_groups+0x1aa/0x3b0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.883695]  [<ffffffffa0a69da9>] btrfs_start_dirty_block_groups+0x1b9/0x3b0 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.884077]  [<ffffffffa0a7b6fe>] btrfs_commit_transaction+0x14e/0xb10 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.884467]  [<ffffffffa0a45bc4>] btrfs_sync_fs+0x84/0x200 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.884692]  [<ffffffff8120ff41>] sync_filesystem+0x71/0xa0
Jul 21 22:32:09 smallvault22 kernel: [377514.884914]  [<ffffffff811d7d47>] generic_shutdown_super+0x27/0x100
Jul 21 22:32:09 smallvault22 kernel: [377514.885145]  [<ffffffff811d8092>] kill_anon_super+0x12/0x20
Jul 21 22:32:09 smallvault22 kernel: [377514.885375]  [<ffffffffa0a49b88>] btrfs_kill_super+0x18/0x120 [btrfs]
Jul 21 22:32:09 smallvault22 kernel: [377514.885599]  [<ffffffff811d8323>] deactivate_locked_super+0x43/0x70
Jul 21 22:32:09 smallvault22 kernel: [377514.885822]  [<ffffffff811d877c>] deactivate_super+0x5c/0x60
Jul 21 22:32:09 smallvault22 kernel: [377514.886045]  [<ffffffff811f8e5f>] cleanup_mnt+0x3f/0x90
Jul 21 22:32:09 smallvault22 kernel: [377514.886274]  [<ffffffff811f8ef2>] __cleanup_mnt+0x12/0x20
Jul 21 22:32:09 smallvault22 kernel: [377514.886497]  [<ffffffff810787e1>] task_work_run+0x81/0xc0
Jul 21 22:32:09 smallvault22 kernel: [377514.886721]  [<ffffffff81002230>] exit_to_usermode_loop+0xc0/0xd0
Jul 21 22:32:09 smallvault22 kernel: [377514.886943]  [<ffffffff81002c33>] syscall_return_slowpath+0xf3/0x220
Jul 21 22:32:09 smallvault22 kernel: [377514.887177]  [<ffffffff816ba6b9>] int_ret_from_sys_call+0x25/0x9f