On Wed, Aug 1, 2012 at 3:25 PM, Josef Bacik <[email protected]> wrote:
> We need an smb_mb() before waitqueue_active to avoid missing wakeups.
> Before Mitch was hitting a deadlock between the ordered flushers and the
> transaction commit because the ordered flushers were waiting for more refs
> and were never woken up, so those smp_mb()'s are the most important.
> Everything else I added for correctness sake and to avoid getting bitten by
> this again somewhere else. Thanks,
>
This patch seems to make it tougher to hit a deadlock, but I'm still
encountering intermittent deadlocks using this patch when running
multiple rsync threads.
I've also tested "Patch 2", and that has me hitting a deadlock even
quicker (when starting several copying threads).
I also found a slight performance hit using this patch. On a 3.4.6
kernel (merged with the 3.5_rc for-linus branch), I would typically
complete my rsync test in ~265 seconds. Also, I can't recall hitting
a deadlock on the 3.4.6 kernel (with 3.5_rc for-linus). When using
this patch, the test would take ~310 seconds (when it didn't hit a
deadlock).
Here's the Delayed Tasks (Ctrl-SysRq-W) when using JUST this patch:
[ 1568.794030] SysRq : Show Blocked State
[ 1568.794101] task PC stack pid father
[ 1568.794123] btrfs-endio-wri D ffff88012579c000 0 3845 2 0x00000000
[ 1568.794128] ffff8801254f3c20 0000000000000046 ffff8801254f2000
ffff8801241b5a80
[ 1568.794132] 0000000000012280 ffff8801254f3fd8 0000000000012280
0000000000004000
[ 1568.794136] ffff8801254f3fd8 0000000000012280 ffff880129af16a0
ffff8801241b5a80
[ 1568.794140] Call Trace:
[ 1568.794179] [<ffffffffa0068785>] ? memcpy_extent_buffer+0x159/0x17a [btrfs]
[ 1568.794200] [<ffffffffa0082ab7>] ? find_ref_head+0xa3/0xc6 [btrfs]
[ 1568.794220] [<ffffffffa008343c>] ? btrfs_find_ref_cluster+0xdd/0x117 [btrfs]
[ 1568.794225] [<ffffffff8162d58c>] schedule+0x64/0x66
[ 1568.794241] [<ffffffffa003fc86>] btrfs_run_delayed_refs+0x269/0x3f0 [btrfs]
[ 1568.794246] [<ffffffff8104b10e>] ? wake_up_bit+0x2a/0x2a
[ 1568.794265] [<ffffffffa004fdc4>] __btrfs_end_transaction+0xca/0x283 [btrfs]
[ 1568.794283] [<ffffffffa004ffda>] btrfs_end_transaction+0x15/0x17 [btrfs]
[ 1568.794302] [<ffffffffa00555da>] btrfs_finish_ordered_io+0x2e4/0x334 [btrfs]
[ 1568.794306] [<ffffffff8103b980>] ? run_timer_softirq+0x2d4/0x2d4
[ 1568.794325] [<ffffffffa005563f>] finish_ordered_fn+0x15/0x17 [btrfs]
[ 1568.794344] [<ffffffffa0070ef8>] worker_loop+0x188/0x4e0 [btrfs]
[ 1568.794365] [<ffffffffa0070d70>] ? btrfs_queue_worker+0x275/0x275 [btrfs]
[ 1568.794384] [<ffffffffa0070d70>] ? btrfs_queue_worker+0x275/0x275 [btrfs]
[ 1568.794387] [<ffffffff8104ac37>] kthread+0x89/0x91
[ 1568.794391] [<ffffffff8162fd74>] kernel_thread_helper+0x4/0x10
[ 1568.794395] [<ffffffff8104abae>] ? kthread_freezable_should_stop+0x57/0x57
[ 1568.794398] [<ffffffff8162fd70>] ? gs_change+0xb/0xb
[ 1568.794400] btrfs-transacti D ffff88009912ba50 0 3851 2 0x00000000
[ 1568.794403] ffff8801241cfc70 0000000000000046 ffff8801241ce000
ffff8801248cda80
[ 1568.794407] 0000000000012280 ffff8801241cffd8 0000000000012280
0000000000004000
[ 1568.794411] ffff8801241cffd8 0000000000012280 ffff8801254b8000
ffff8801248cda80
[ 1568.794415] Call Trace:
[ 1568.794436] [<ffffffffa0066646>] ? extent_writepages+0x53/0x5d [btrfs]
[ 1568.794455] [<ffffffffa005357b>] ?
uncompress_inline.clone.33+0x15f/0x15f [btrfs]
[ 1568.794459] [<ffffffff810c9ada>] ? pagevec_lookup_tag+0x24/0x2e
[ 1568.794478] [<ffffffffa0052e0e>] ? btrfs_writepages+0x27/0x29 [btrfs]
[ 1568.794481] [<ffffffff810c90b1>] ? do_writepages+0x20/0x29
[ 1568.794485] [<ffffffff8162d58c>] schedule+0x64/0x66
[ 1568.794505] [<ffffffffa0061547>]
btrfs_start_ordered_extent+0xde/0xfa [btrfs]
[ 1568.794508] [<ffffffff8104b10e>] ? wake_up_bit+0x2a/0x2a
[ 1568.794529] [<ffffffffa0061984>] ?
btrfs_lookup_first_ordered_extent+0x65/0x99 [btrfs]
[ 1568.794549] [<ffffffffa0061a6a>] btrfs_wait_ordered_range+0xb2/0xda [btrfs]
[ 1568.794569] [<ffffffffa0061bcc>]
btrfs_run_ordered_operations+0x13a/0x1c1 [btrfs]
[ 1568.794587] [<ffffffffa004f5f5>]
btrfs_commit_transaction+0x287/0x960 [btrfs]
[ 1568.794606] [<ffffffffa00502b1>] ? start_transaction+0x2d5/0x310 [btrfs]
[ 1568.794609] [<ffffffff8104b10e>] ? wake_up_bit+0x2a/0x2a
[ 1568.794627] [<ffffffffa004913b>] transaction_kthread+0x187/0x258 [btrfs]
[ 1568.794644] [<ffffffffa0048fb4>] ? btrfs_alloc_root+0x42/0x42 [btrfs]
[ 1568.794661] [<ffffffffa0048fb4>] ? btrfs_alloc_root+0x42/0x42 [btrfs]
[ 1568.794664] [<ffffffff8104ac37>] kthread+0x89/0x91
[ 1568.794668] [<ffffffff8162fd74>] kernel_thread_helper+0x4/0x10
[ 1568.794671] [<ffffffff8104abae>] ? kthread_freezable_should_stop+0x57/0x57
[ 1568.794674] [<ffffffff8162fd70>] ? gs_change+0xb/0xb
[ 1568.794676] flush-btrfs-1 D ffff88012579c000 0 3857 2 0x00000000
[ 1568.794680] ffff880037125670 0000000000000046 ffff880037124000
ffff8801254b8000
[ 1568.794684] 0000000000012280 ffff880037125fd8 0000000000012280
0000000000004000
[ 1568.794687] ffff880037125fd8 0000000000012280 ffffffff81c13410
ffff8801254b8000
[ 1568.794691] Call Trace:
[ 1568.794711] [<ffffffffa0082ab7>] ? find_ref_head+0xa3/0xc6 [btrfs]
[ 1568.794731] [<ffffffffa008343c>] ? btrfs_find_ref_cluster+0xdd/0x117 [btrfs]
[ 1568.794735] [<ffffffff8162d58c>] schedule+0x64/0x66
[ 1568.794750] [<ffffffffa003fc86>] btrfs_run_delayed_refs+0x269/0x3f0 [btrfs]
[ 1568.794754] [<ffffffff8104b10e>] ? wake_up_bit+0x2a/0x2a
[ 1568.794772] [<ffffffffa004fdc4>] __btrfs_end_transaction+0xca/0x283 [btrfs]
[ 1568.794790] [<ffffffffa004ffda>] btrfs_end_transaction+0x15/0x17 [btrfs]
[ 1568.794809] [<ffffffffa005607e>] cow_file_range+0x3fa/0x453 [btrfs]
[ 1568.794829] [<ffffffffa00635a6>] ? __set_extent_bit+0x3ce/0x403 [btrfs]
[ 1568.794848] [<ffffffffa00569d7>] run_delalloc_range+0xbc/0x38f [btrfs]
[ 1568.794868] [<ffffffffa006485f>] ?
find_lock_delalloc_range.clone.26+0x18b/0x1b0 [btrfs]
[ 1568.794889] [<ffffffffa0065d1d>] __extent_writepage+0x200/0x600 [btrfs]
[ 1568.794909] [<ffffffffa006528d>] ? end_extent_writepage+0x5b/0x5b [btrfs]
[ 1568.794913] [<ffffffff810bf853>] ? find_get_pages_tag+0xf8/0x134
[ 1568.794934] [<ffffffffa00662e4>]
extent_write_cache_pages.clone.16.clone.29+0x1c7/0x30c [btrfs]
[ 1568.794952] [<ffffffffa0051c2f>] ? __btrfs_submit_bio_done+0x1d/0x1d [btrfs]
[ 1568.794971] [<ffffffffa0051c12>] ? btrfs_submit_bio_hook+0x122/0x122 [btrfs]
[ 1568.794991] [<ffffffffa0062284>] ? submit_one_bio+0x8d/0x97 [btrfs]
[ 1568.795011] [<ffffffffa006663b>] extent_writepages+0x48/0x5d [btrfs]
[ 1568.795023] [<ffffffffa005357b>] ?
uncompress_inline.clone.33+0x15f/0x15f [btrfs]
[ 1568.795023] [<ffffffffa0052e0e>] btrfs_writepages+0x27/0x29 [btrfs]
[ 1568.795023] [<ffffffff810c90b1>] do_writepages+0x20/0x29
[ 1568.795023] [<ffffffff8112e343>]
__writeback_single_inode.clone.22+0x48/0x11c
[ 1568.795023] [<ffffffff8112e8ab>] writeback_sb_inodes+0x1f0/0x332
[ 1568.795023] [<ffffffff8112ea65>] __writeback_inodes_wb+0x78/0xb9
[ 1568.795023] [<ffffffff8112ebec>] wb_writeback+0x146/0x23e
[ 1568.795023] [<ffffffff81121cfd>] ? get_nr_inodes+0x48/0x5f
[ 1568.795023] [<ffffffff8112f48a>] wb_do_writeback+0x154/0x1b0
[ 1568.795023] [<ffffffff8112f574>] bdi_writeback_thread+0x8e/0x1f1
[ 1568.795023] [<ffffffff8112f4e6>] ? wb_do_writeback+0x1b0/0x1b0
[ 1568.795023] [<ffffffff8112f4e6>] ? wb_do_writeback+0x1b0/0x1b0
[ 1568.795023] [<ffffffff8104ac37>] kthread+0x89/0x91
[ 1568.795023] [<ffffffff8162fd74>] kernel_thread_helper+0x4/0x10
[ 1568.795023] [<ffffffff8104abae>] ? kthread_freezable_should_stop+0x57/0x57
[ 1568.795023] [<ffffffff8162fd70>] ? gs_change+0xb/0xb
[ 1568.795023] btrfs-endio-wri D ffff88012579c000 0 3899 2 0x00000000
[ 1568.795023] ffff880124ea5c20 0000000000000046 ffff880124ea4000
ffff8800a3015a80
[ 1568.795023] 0000000000012280 ffff880124ea5fd8 0000000000012280
0000000000004000
[ 1568.795023] ffff880124ea5fd8 0000000000012280 ffff8800a30143e0
ffff8800a3015a80
[ 1568.795023] Call Trace:
[ 1568.795023] [<ffffffffa0068785>] ? memcpy_extent_buffer+0x159/0x17a [btrfs]
[ 1568.795023] [<ffffffffa0082ab7>] ? find_ref_head+0xa3/0xc6 [btrfs]
[ 1568.795023] [<ffffffffa008343c>] ? btrfs_find_ref_cluster+0xdd/0x117 [btrfs]
[ 1568.795023] [<ffffffff8162d58c>] schedule+0x64/0x66
[ 1568.795023] [<ffffffffa003fc86>] btrfs_run_delayed_refs+0x269/0x3f0 [btrfs]
[ 1568.795023] [<ffffffff8104b10e>] ? wake_up_bit+0x2a/0x2a
[ 1568.795023] [<ffffffffa004fdc4>] __btrfs_end_transaction+0xca/0x283 [btrfs]
[ 1568.795023] [<ffffffffa004ffda>] btrfs_end_transaction+0x15/0x17 [btrfs]
[ 1568.795023] [<ffffffffa00555da>] btrfs_finish_ordered_io+0x2e4/0x334 [btrfs]
[ 1568.795023] [<ffffffff8103b980>] ? run_timer_softirq+0x2d4/0x2d4
[ 1568.795023] [<ffffffffa005563f>] finish_ordered_fn+0x15/0x17 [btrfs]
[ 1568.795023] [<ffffffffa0070ef8>] worker_loop+0x188/0x4e0 [btrfs]
[ 1568.795023] [<ffffffffa0070d70>] ? btrfs_queue_worker+0x275/0x275 [btrfs]
[ 1568.795023] [<ffffffff8104ac37>] kthread+0x89/0x91
[ 1568.795023] [<ffffffff8162fd74>] kernel_thread_helper+0x4/0x10
[ 1568.795023] [<ffffffff8104abae>] ? kthread_freezable_should_stop+0x57/0x57
[ 1568.795023] [<ffffffff8162fd70>] ? gs_change+0xb/0xb
[ 1568.795023] rsync D 0000000000000000 0 3996 3989 0x00000000
[ 1568.795023] ffff88010cd05ca8 0000000000000082 ffff88010cd04000
ffff88011368ad40
[ 1568.795023] 0000000000012280 ffff88010cd05fd8 0000000000012280
0000000000004000
[ 1568.795023] ffff88010cd05fd8 0000000000012280 ffffffff81c13410
ffff88011368ad40
[ 1568.795023] Call Trace:
[ 1568.795023] [<ffffffffa003cb51>] ? get_alloc_profile+0x4e/0x50 [btrfs]
[ 1568.795023] [<ffffffffa003cb82>] ? btrfs_get_alloc_profile+0x2f/0x31 [btrfs]
[ 1568.795023] [<ffffffffa003db7f>] ?
reserve_metadata_bytes.clone.57+0x339/0x66c [btrfs]
[ 1568.795023] [<ffffffff8162d58c>] schedule+0x64/0x66
[ 1568.795023] [<ffffffffa004ee57>]
wait_current_trans.clone.26+0xac/0xdd [btrfs]
[ 1568.795023] [<ffffffff8104b10e>] ? wake_up_bit+0x2a/0x2a
[ 1568.795023] [<ffffffffa0050157>] start_transaction+0x17b/0x310 [btrfs]
[ 1568.795023] [<ffffffffa0050553>] btrfs_start_transaction+0x13/0x15 [btrfs]
[ 1568.795023] [<ffffffffa005126d>] __unlink_start_trans+0x94/0x404 [btrfs]
[ 1568.795023] [<ffffffff810384a3>] ? inode_capable+0x15/0x1a
[ 1568.795023] [<ffffffff81116127>] ? generic_permission+0x1a5/0x209
[ 1568.795023] [<ffffffffa00577bb>] btrfs_unlink+0x2c/0xac [btrfs]
[ 1568.795023] [<ffffffff81116c8f>] vfs_unlink+0x78/0xdd
[ 1568.795023] [<ffffffff811189e8>] do_unlinkat+0xe6/0x178
[ 1568.795023] [<ffffffff8110de68>] ? fput+0x1e8/0x1f7
[ 1568.795023] [<ffffffff8110ac43>] ? filp_close+0x70/0x7b
[ 1568.795023] [<ffffffff81119c7c>] sys_unlink+0x16/0x18
[ 1568.795023] [<ffffffff8162ec92>] system_call_fastpath+0x16/0x1b
[ 1568.795023] rsync D 0000000000000000 0 3997 3993 0x00000000
[ 1568.795023] ffff88010cd07ca8 0000000000000082 ffff88010cd06000
ffff880109a816a0
[ 1568.795023] 0000000000012280 ffff88010cd07fd8 0000000000012280
0000000000004000
[ 1568.795023] ffff88010cd07fd8 0000000000012280 ffff880129af16a0
ffff880109a816a0
[ 1568.795023] Call Trace:
[ 1568.795023] [<ffffffffa003cb51>] ? get_alloc_profile+0x4e/0x50 [btrfs]
[ 1568.795023] [<ffffffffa003cb82>] ? btrfs_get_alloc_profile+0x2f/0x31 [btrfs]
[ 1568.795023] [<ffffffffa003db7f>] ?
reserve_metadata_bytes.clone.57+0x339/0x66c [btrfs]
[ 1568.795023] [<ffffffff8162d58c>] schedule+0x64/0x66
[ 1568.795023] [<ffffffffa004ee57>]
wait_current_trans.clone.26+0xac/0xdd [btrfs]
[ 1568.795023] [<ffffffff8104b10e>] ? wake_up_bit+0x2a/0x2a
[ 1568.795023] [<ffffffffa0050157>] start_transaction+0x17b/0x310 [btrfs]
[ 1568.795023] [<ffffffffa0050553>] btrfs_start_transaction+0x13/0x15 [btrfs]
[ 1568.795023] [<ffffffffa005126d>] __unlink_start_trans+0x94/0x404 [btrfs]
[ 1568.795023] [<ffffffff810384a3>] ? inode_capable+0x15/0x1a
[ 1568.795023] [<ffffffff81116127>] ? generic_permission+0x1a5/0x209
[ 1568.795023] [<ffffffffa00577bb>] btrfs_unlink+0x2c/0xac [btrfs]
[ 1568.795023] [<ffffffff81116c8f>] vfs_unlink+0x78/0xdd
[ 1568.795023] [<ffffffff811189e8>] do_unlinkat+0xe6/0x178
[ 1568.795023] [<ffffffff8110de68>] ? fput+0x1e8/0x1f7
[ 1568.795023] [<ffffffff8110ac43>] ? filp_close+0x70/0x7b
[ 1568.795023] [<ffffffff81119c7c>] sys_unlink+0x16/0x18
[ 1568.795023] [<ffffffff8162ec92>] system_call_fastpath+0x16/0x1b
[ 1568.795023] rsync D 0000000000000000 0 3998 3991 0x00000000
[ 1568.795023] ffff88011f6f1ca8 0000000000000082 ffff88011f6f0000
ffff880125d55a80
[ 1568.795023] 0000000000012280 ffff88011f6f1fd8 0000000000012280
0000000000004000
[ 1568.795023] ffff88011f6f1fd8 0000000000012280 ffff880129af16a0
ffff880125d55a80
[ 1568.795023] Call Trace:
[ 1568.795023] [<ffffffffa003cb51>] ? get_alloc_profile+0x4e/0x50 [btrfs]
[ 1568.795023] [<ffffffffa003cb82>] ? btrfs_get_alloc_profile+0x2f/0x31 [btrfs]
[ 1568.795023] [<ffffffffa003db7f>] ?
reserve_metadata_bytes.clone.57+0x339/0x66c [btrfs]
[ 1568.795023] [<ffffffff8162d58c>] schedule+0x64/0x66
[ 1568.795023] [<ffffffffa004ee57>]
wait_current_trans.clone.26+0xac/0xdd [btrfs]
[ 1568.795023] [<ffffffff8104b10e>] ? wake_up_bit+0x2a/0x2a
[ 1568.795023] [<ffffffffa0050157>] start_transaction+0x17b/0x310 [btrfs]
[ 1568.795023] [<ffffffffa0050553>] btrfs_start_transaction+0x13/0x15 [btrfs]
[ 1568.795023] [<ffffffffa005126d>] __unlink_start_trans+0x94/0x404 [btrfs]
[ 1568.795023] [<ffffffff810384a3>] ? inode_capable+0x15/0x1a
[ 1568.795023] [<ffffffff81116127>] ? generic_permission+0x1a5/0x209
[ 1568.795023] [<ffffffffa00577bb>] btrfs_unlink+0x2c/0xac [btrfs]
[ 1568.795023] [<ffffffff81116c8f>] vfs_unlink+0x78/0xdd
[ 1568.795023] [<ffffffff811189e8>] do_unlinkat+0xe6/0x178
[ 1568.795023] [<ffffffff8110de68>] ? fput+0x1e8/0x1f7
[ 1568.795023] [<ffffffff8110ac43>] ? filp_close+0x70/0x7b
[ 1568.795023] [<ffffffff81119c7c>] sys_unlink+0x16/0x18
[ 1568.795023] [<ffffffff8162ec92>] system_call_fastpath+0x16/0x1b
[ 1568.795023] rsync D 0000000000000000 0 3999 3994 0x00000000
[ 1568.795023] ffff88011f6f3ca8 0000000000000086 ffff88011f6f2000
ffff880109a843e0
[ 1568.795023] 0000000000012280 ffff88011f6f3fd8 0000000000012280
0000000000004000
[ 1568.795023] ffff88011f6f3fd8 0000000000012280 ffff880129af16a0
ffff880109a843e0
[ 1568.795023] Call Trace:
[ 1568.795023] [<ffffffffa003cb51>] ? get_alloc_profile+0x4e/0x50 [btrfs]
[ 1568.795023] [<ffffffffa003cb82>] ? btrfs_get_alloc_profile+0x2f/0x31 [btrfs]
[ 1568.795023] [<ffffffffa003db7f>] ?
reserve_metadata_bytes.clone.57+0x339/0x66c [btrfs]
[ 1568.795023] [<ffffffff8162d58c>] schedule+0x64/0x66
[ 1568.795023] [<ffffffffa004ee57>]
wait_current_trans.clone.26+0xac/0xdd [btrfs]
[ 1568.795023] [<ffffffff8104b10e>] ? wake_up_bit+0x2a/0x2a
[ 1568.795023] [<ffffffffa0050157>] start_transaction+0x17b/0x310 [btrfs]
[ 1568.795023] [<ffffffffa0050553>] btrfs_start_transaction+0x13/0x15 [btrfs]
[ 1568.795023] [<ffffffffa005126d>] __unlink_start_trans+0x94/0x404 [btrfs]
[ 1568.795023] [<ffffffff810384a3>] ? inode_capable+0x15/0x1a
[ 1568.795023] [<ffffffff81116127>] ? generic_permission+0x1a5/0x209
[ 1568.795023] [<ffffffffa00577bb>] btrfs_unlink+0x2c/0xac [btrfs]
[ 1568.795023] [<ffffffff81116c8f>] vfs_unlink+0x78/0xdd
[ 1568.795023] [<ffffffff811189e8>] do_unlinkat+0xe6/0x178
[ 1568.795023] [<ffffffff8110de68>] ? fput+0x1e8/0x1f7
[ 1568.795023] [<ffffffff8110ac43>] ? filp_close+0x70/0x7b
[ 1568.795023] [<ffffffff81119c7c>] sys_unlink+0x16/0x18
[ 1568.795023] [<ffffffff8162ec92>] system_call_fastpath+0x16/0x1b
[ 1568.795023] rsync D 0000000000000000 0 4000 3990 0x00000000
[ 1568.795023] ffff88011cbb9ca8 0000000000000086 ffff88011cbb8000
ffff880109a80000
[ 1568.795023] 0000000000012280 ffff88011cbb9fd8 0000000000012280
0000000000004000
[ 1568.795023] ffff88011cbb9fd8 0000000000012280 ffff88011368ad40
ffff880109a80000
[ 1568.795023] Call Trace:
[ 1568.795023] [<ffffffffa003cb51>] ? get_alloc_profile+0x4e/0x50 [btrfs]
[ 1568.795023] [<ffffffffa003cb82>] ? btrfs_get_alloc_profile+0x2f/0x31 [btrfs]
[ 1568.795023] [<ffffffffa003db7f>] ?
reserve_metadata_bytes.clone.57+0x339/0x66c [btrfs]
[ 1568.795023] [<ffffffff8162d58c>] schedule+0x64/0x66
[ 1568.795023] [<ffffffffa004ee57>]
wait_current_trans.clone.26+0xac/0xdd [btrfs]
[ 1568.795023] [<ffffffff8104b10e>] ? wake_up_bit+0x2a/0x2a
[ 1568.795023] [<ffffffffa0050157>] start_transaction+0x17b/0x310 [btrfs]
[ 1568.795023] [<ffffffffa0050553>] btrfs_start_transaction+0x13/0x15 [btrfs]
[ 1568.795023] [<ffffffffa005126d>] __unlink_start_trans+0x94/0x404 [btrfs]
[ 1568.795023] [<ffffffff810384a3>] ? inode_capable+0x15/0x1a
[ 1568.795023] [<ffffffff81116127>] ? generic_permission+0x1a5/0x209
[ 1568.795023] [<ffffffffa00577bb>] btrfs_unlink+0x2c/0xac [btrfs]
[ 1568.795023] [<ffffffff81116c8f>] vfs_unlink+0x78/0xdd
[ 1568.795023] [<ffffffff811189e8>] do_unlinkat+0xe6/0x178
[ 1568.795023] [<ffffffff8110de68>] ? fput+0x1e8/0x1f7
[ 1568.795023] [<ffffffff8110ac43>] ? filp_close+0x70/0x7b
[ 1568.795023] [<ffffffff81119c7c>] sys_unlink+0x16/0x18
[ 1568.795023] [<ffffffff8162ec92>] system_call_fastpath+0x16/0x1b
[ 1568.795023] rsync D 0000000000000000 0 4001 3992 0x00000000
[ 1568.795023] ffff88011cbbbca8 0000000000000086 ffff88011cbba000
ffff8801254b96a0
[ 1568.795023] 0000000000012280 ffff88011cbbbfd8 0000000000012280
0000000000004000
[ 1568.795023] ffff88011cbbbfd8 0000000000012280 ffff880129af16a0
ffff8801254b96a0
[ 1568.795023] Call Trace:
[ 1568.795023] [<ffffffffa003cb51>] ? get_alloc_profile+0x4e/0x50 [btrfs]
[ 1568.795023] [<ffffffffa003cb82>] ? btrfs_get_alloc_profile+0x2f/0x31 [btrfs]
[ 1568.795023] [<ffffffffa005012e>] ? start_transaction+0x152/0x310 [btrfs]
[ 1568.795023] [<ffffffff8162d58c>] schedule+0x64/0x66
[ 1568.795023] [<ffffffffa004ee57>]
wait_current_trans.clone.26+0xac/0xdd [btrfs]
[ 1568.795023] [<ffffffff8104b10e>] ? wake_up_bit+0x2a/0x2a
[ 1568.795023] [<ffffffffa0050157>] start_transaction+0x17b/0x310 [btrfs]
[ 1568.795023] [<ffffffffa0050553>] btrfs_start_transaction+0x13/0x15 [btrfs]
[ 1568.795023] [<ffffffffa005126d>] __unlink_start_trans+0x94/0x404 [btrfs]
[ 1568.795023] [<ffffffff810384a3>] ? inode_capable+0x15/0x1a
[ 1568.795023] [<ffffffff81116127>] ? generic_permission+0x1a5/0x209
[ 1568.795023] [<ffffffffa00577bb>] btrfs_unlink+0x2c/0xac [btrfs]
[ 1568.795023] [<ffffffff81116c8f>] vfs_unlink+0x78/0xdd
[ 1568.795023] [<ffffffff811189e8>] do_unlinkat+0xe6/0x178
[ 1568.795023] [<ffffffff8110de68>] ? fput+0x1e8/0x1f7
[ 1568.795023] [<ffffffff8110ac43>] ? filp_close+0x70/0x7b
[ 1568.795023] [<ffffffff81119c7c>] sys_unlink+0x16/0x18
[ 1568.795023] [<ffffffff8162ec92>] system_call_fastpath+0x16/0x1b
[ 1568.795023] rsync D 0000000000000000 0 4002 3995 0x00000000
[ 1568.795023] ffff88011dd67ca8 0000000000000082 ffff88011dd66000
ffff88012885da80
[ 1568.795023] 0000000000012280 ffff88011dd67fd8 0000000000012280
0000000000004000
[ 1568.795023] ffff88011dd67fd8 0000000000012280 ffffffff81c13410
ffff88012885da80
[ 1568.795023] Call Trace:
[ 1568.795023] [<ffffffffa003cb51>] ? get_alloc_profile+0x4e/0x50 [btrfs]
[ 1568.795023] [<ffffffffa003cb82>] ? btrfs_get_alloc_profile+0x2f/0x31 [btrfs]
[ 1568.795023] [<ffffffffa003db7f>] ?
reserve_metadata_bytes.clone.57+0x339/0x66c [btrfs]
[ 1568.795023] [<ffffffff8162d58c>] schedule+0x64/0x66
[ 1568.795023] [<ffffffffa004ee57>]
wait_current_trans.clone.26+0xac/0xdd [btrfs]
[ 1568.795023] [<ffffffff8104b10e>] ? wake_up_bit+0x2a/0x2a
[ 1568.795023] [<ffffffffa0050157>] start_transaction+0x17b/0x310 [btrfs]
[ 1568.795023] [<ffffffffa0050553>] btrfs_start_transaction+0x13/0x15 [btrfs]
[ 1568.795023] [<ffffffffa005126d>] __unlink_start_trans+0x94/0x404 [btrfs]
[ 1568.795023] [<ffffffff810384a3>] ? inode_capable+0x15/0x1a
[ 1568.795023] [<ffffffff81116127>] ? generic_permission+0x1a5/0x209
[ 1568.795023] [<ffffffffa00577bb>] btrfs_unlink+0x2c/0xac [btrfs]
[ 1568.795023] [<ffffffff81116c8f>] vfs_unlink+0x78/0xdd
[ 1568.795023] [<ffffffff811189e8>] do_unlinkat+0xe6/0x178
[ 1568.795023] [<ffffffff8110de68>] ? fput+0x1e8/0x1f7
[ 1568.795023] [<ffffffff8110ac43>] ? filp_close+0x70/0x7b
[ 1568.795023] [<ffffffff81119c7c>] sys_unlink+0x16/0x18
[ 1568.795023] [<ffffffff8162ec92>] system_call_fastpath+0x16/0x1b
[ 1568.795023] rsync D 0000000000000000 0 4004 3998 0x00000000
[ 1568.795023] ffff88011a9adb68 0000000000000086 ffff88011a9ac000
ffff8801248cad40
[ 1568.795023] 0000000000012280 ffff88011a9adfd8 0000000000012280
0000000000004000
[ 1568.795023] ffff88011a9adfd8 0000000000012280 ffff880109a816a0
ffff8801248cad40
[ 1568.795023] Call Trace:
[ 1568.795023] [<ffffffffa003cb51>] ? get_alloc_profile+0x4e/0x50 [btrfs]
[ 1568.795023] [<ffffffffa003cb82>] ? btrfs_get_alloc_profile+0x2f/0x31 [btrfs]
[ 1568.795023] [<ffffffffa003db7f>] ?
reserve_metadata_bytes.clone.57+0x339/0x66c [btrfs]
[ 1568.795023] [<ffffffff8162d58c>] schedule+0x64/0x66
[ 1568.795023] [<ffffffffa004ee57>]
wait_current_trans.clone.26+0xac/0xdd [btrfs]
[ 1568.795023] [<ffffffff8104b10e>] ? wake_up_bit+0x2a/0x2a
[ 1568.795023] [<ffffffffa0050157>] start_transaction+0x17b/0x310 [btrfs]
[ 1568.795023] [<ffffffff8105136f>] ? in_group_p+0x31/0x33
[ 1568.795023] [<ffffffffa0050553>] btrfs_start_transaction+0x13/0x15 [btrfs]
[ 1568.795023] [<ffffffffa005b47d>] btrfs_create+0x3a/0x1e0 [btrfs]
[ 1568.795023] [<ffffffff8111ff3d>] ? d_splice_alias+0xcc/0xd8
[ 1568.795023] [<ffffffff81116a86>] vfs_create+0x9c/0xf5
[ 1568.795023] [<ffffffff81118e62>] do_last+0x2b9/0x807
[ 1568.795023] [<ffffffff811194af>] path_openat+0xcc/0x37f
[ 1568.795023] [<ffffffff81119864>] do_filp_open+0x3d/0x89
[ 1568.795023] [<ffffffff810fe9b0>] ? kmem_cache_alloc+0x31/0x104
[ 1568.795023] [<ffffffff81123bb4>] ? alloc_fd+0x74/0x103
[ 1568.795023] [<ffffffff8110c09d>] do_sys_open+0x10f/0x1a1
[ 1568.795023] [<ffffffff8110c150>] sys_open+0x21/0x23
[ 1568.795023] [<ffffffff8162ec92>] system_call_fastpath+0x16/0x1b
[ 1568.795023] rsync D 0000000000000000 0 4006 3997 0x00000000
[ 1568.795023] ffff88011475dbb8 0000000000000086 ffff88011475c000
ffff880128995a80
[ 1568.795023] 0000000000012280 ffff88011475dfd8 0000000000012280
0000000000004000
[ 1568.795023] ffff88011475dfd8 0000000000012280 ffffffff81c13410
ffff880128995a80
[ 1568.795023] Call Trace:
[ 1568.795023] [<ffffffffa003cb51>] ? get_alloc_profile+0x4e/0x50 [btrfs]
[ 1568.795023] [<ffffffffa003cb82>] ? btrfs_get_alloc_profile+0x2f/0x31 [btrfs]
[ 1568.795023] [<ffffffffa003db7f>] ?
reserve_metadata_bytes.clone.57+0x339/0x66c [btrfs]
[ 1568.795023] [<ffffffff8162d58c>] schedule+0x64/0x66
[ 1568.795023] [<ffffffffa004ee57>]
wait_current_trans.clone.26+0xac/0xdd [btrfs]
[ 1568.795023] [<ffffffff8104b10e>] ? wake_up_bit+0x2a/0x2a
[ 1568.795023] [<ffffffffa0050157>] start_transaction+0x17b/0x310 [btrfs]
[ 1568.795023] [<ffffffff81116008>] ? generic_permission+0x86/0x209
[ 1568.795023] [<ffffffffa0050553>] btrfs_start_transaction+0x13/0x15 [btrfs]
[ 1568.795023] [<ffffffffa005a8d0>] btrfs_rename+0x1bd/0x5af [btrfs]
[ 1568.795023] [<ffffffff81116127>] ? generic_permission+0x1a5/0x209
[ 1568.795023] [<ffffffff81116e9f>] ? vfs_rename+0xbe/0x3df
[ 1568.795023] [<ffffffff8111705d>] vfs_rename+0x27c/0x3df
[ 1568.795023] [<ffffffff8111a072>] sys_renameat+0x1ac/0x259
[ 1568.795023] [<ffffffff81122f26>] ? notify_change+0x2a2/0x2b8
[ 1568.795023] [<ffffffff811197e3>] ? user_path_at_empty+0x61/0x92
[ 1568.795023] [<ffffffff81124e45>] ? mntput_no_expire+0x3f/0x138
[ 1568.795023] [<ffffffff81124f68>] ? mntput+0x2a/0x2c
[ 1568.795023] [<ffffffff811156a6>] ? path_put+0x22/0x26
[ 1568.795023] [<ffffffff8111a13a>] sys_rename+0x1b/0x1d
[ 1568.795023] [<ffffffff8162ec92>] system_call_fastpath+0x16/0x1b
[ 1568.795023] rsync D 0000000000000000 0 4007 3996 0x00000000
[ 1568.795023] ffff88010c7cdbb8 0000000000000086 ffff88010c7cc000
ffff8801289916a0
[ 1568.795023] 0000000000012280 ffff88010c7cdfd8 0000000000012280
0000000000004000
[ 1568.795023] ffff88010c7cdfd8 0000000000012280 ffff880129af16a0
ffff8801289916a0
[ 1568.795023] Call Trace:
[ 1568.795023] [<ffffffffa003cb51>] ? get_alloc_profile+0x4e/0x50 [btrfs]
[ 1568.795023] [<ffffffffa003cb82>] ? btrfs_get_alloc_profile+0x2f/0x31 [btrfs]
[ 1568.795023] [<ffffffffa003db7f>] ?
reserve_metadata_bytes.clone.57+0x339/0x66c [btrfs]
[ 1568.795023] [<ffffffff8162d58c>] schedule+0x64/0x66
[ 1568.795023] [<ffffffffa004ee57>]
wait_current_trans.clone.26+0xac/0xdd [btrfs]
[ 1568.795023] [<ffffffff8104b10e>] ? wake_up_bit+0x2a/0x2a
[ 1568.795023] [<ffffffffa0050157>] start_transaction+0x17b/0x310 [btrfs]
[ 1568.795023] [<ffffffffa0050553>] btrfs_start_transaction+0x13/0x15 [btrfs]
[ 1568.795023] [<ffffffffa005a8d0>] btrfs_rename+0x1bd/0x5af [btrfs]
[ 1568.795023] [<ffffffff81116127>] ? generic_permission+0x1a5/0x209
[ 1568.795023] [<ffffffff81116e9f>] ? vfs_rename+0xbe/0x3df
[ 1568.795023] [<ffffffff8111705d>] vfs_rename+0x27c/0x3df
[ 1568.795023] [<ffffffff8111a072>] sys_renameat+0x1ac/0x259
[ 1568.795023] [<ffffffff81122f26>] ? notify_change+0x2a2/0x2b8
[ 1568.795023] [<ffffffff811197e3>] ? user_path_at_empty+0x61/0x92
[ 1568.795023] [<ffffffff81124e45>] ? mntput_no_expire+0x3f/0x138
[ 1568.795023] [<ffffffff81124f68>] ? mntput+0x2a/0x2c
[ 1568.795023] [<ffffffff811156a6>] ? path_put+0x22/0x26
[ 1568.795023] [<ffffffff8111a13a>] sys_rename+0x1b/0x1d
[ 1568.795023] [<ffffffff8162ec92>] system_call_fastpath+0x16/0x1b
[ 1568.795023] rsync D 0000000000000000 0 4008 4001 0x00000000
[ 1568.795023] ffff88011ae33bb8 0000000000000086 ffff88011ae32000
ffff8801296a2d40
[ 1568.795023] 0000000000012280 ffff88011ae33fd8 0000000000012280
0000000000004000
[ 1568.795023] ffff88011ae33fd8 0000000000012280 ffff880128995a80
ffff8801296a2d40
[ 1568.795023] Call Trace:
[ 1568.795023] [<ffffffffa003cb51>] ? get_alloc_profile+0x4e/0x50 [btrfs]
[ 1568.795023] [<ffffffffa003cb82>] ? btrfs_get_alloc_profile+0x2f/0x31 [btrfs]
[ 1568.795023] [<ffffffffa003db7f>] ?
reserve_metadata_bytes.clone.57+0x339/0x66c [btrfs]
[ 1568.795023] [<ffffffff8162d58c>] schedule+0x64/0x66
[ 1568.795023] [<ffffffffa004ee57>]
wait_current_trans.clone.26+0xac/0xdd [btrfs]
[ 1568.795023] [<ffffffff8104b10e>] ? wake_up_bit+0x2a/0x2a
[ 1568.795023] [<ffffffffa0050157>] start_transaction+0x17b/0x310 [btrfs]
[ 1568.795023] [<ffffffff81116008>] ? generic_permission+0x86/0x209
[ 1568.795023] [<ffffffffa0050553>] btrfs_start_transaction+0x13/0x15 [btrfs]
[ 1568.795023] [<ffffffffa005a8d0>] btrfs_rename+0x1bd/0x5af [btrfs]
[ 1568.795023] [<ffffffff81116127>] ? generic_permission+0x1a5/0x209
[ 1568.795023] [<ffffffff81116e9f>] ? vfs_rename+0xbe/0x3df
[ 1568.795023] [<ffffffff8111705d>] vfs_rename+0x27c/0x3df
[ 1568.795023] [<ffffffff8111a072>] sys_renameat+0x1ac/0x259
[ 1568.795023] [<ffffffff81122f26>] ? notify_change+0x2a2/0x2b8
[ 1568.795023] [<ffffffff811197e3>] ? user_path_at_empty+0x61/0x92
[ 1568.795023] [<ffffffff81124e45>] ? mntput_no_expire+0x3f/0x138
[ 1568.795023] [<ffffffff81124f68>] ? mntput+0x2a/0x2c
[ 1568.795023] [<ffffffff811156a6>] ? path_put+0x22/0x26
[ 1568.795023] [<ffffffff8111a13a>] sys_rename+0x1b/0x1d
[ 1568.795023] [<ffffffff8162ec92>] system_call_fastpath+0x16/0x1b
[ 1568.795023] Sched Debug Version: v0.10, 3.5.0-baseline+ #1
[ 1568.795023] ktime : 1568797.341765
[ 1568.795023] sched_clk : 1568905.405572
[ 1568.795023] cpu_clk : 1568795.023448
[ 1568.795023] jiffies : 4296236090
[ 1568.795023] sched_clock_stable : 0
[ 1568.795023]
[ 1568.795023] sysctl_sched
[ 1568.795023] .sysctl_sched_latency : 12.000000
[ 1568.795023] .sysctl_sched_min_granularity : 1.500000
[ 1568.795023] .sysctl_sched_wakeup_granularity : 2.000000
[ 1568.795023] .sysctl_sched_child_runs_first : 0
[ 1568.795023] .sysctl_sched_features : 24119
[ 1568.795023] .sysctl_sched_tunable_scaling : 1 (logaritmic)
[ 1568.795023]
[ 1568.795023] cpu#0, 2666.627 MHz
[ 1568.795023] .nr_running : 0
[ 1568.795023] .load : 0
[ 1568.795023] .nr_switches : 2092841
[ 1568.795023] .nr_load_updates : 319578
[ 1568.795023] .nr_uninterruptible : -79
[ 1568.795023] .next_balance : 4296.235984
[ 1568.795023] .curr->pid : 0
[ 1568.795023] .clock : 1568792.396031
[ 1568.795023] .cpu_load[0] : 0
[ 1568.795023] .cpu_load[1] : 0
[ 1568.795023] .cpu_load[2] : 0
[ 1568.795023] .cpu_load[3] : 0
[ 1568.795023] .cpu_load[4] : 0
[ 1568.795023] .yld_count : 21
[ 1568.795023] .sched_count : 2345950
[ 1568.795023] .sched_goidle : 683438
[ 1568.795023] .avg_idle : 1000000
[ 1568.795023] .ttwu_count : 1179205
[ 1568.795023] .ttwu_local : 432796
[ 1568.795023]
[ 1568.795023] cfs_rq[0]:/
[ 1568.795023] .exec_clock : 122611.778679
[ 1568.795023] .MIN_vruntime : 0.000001
[ 1568.795023] .min_vruntime : 155427.205936
[ 1568.795023] .max_vruntime : 0.000001
[ 1568.795023] .spread : 0.000000
[ 1568.795023] .spread0 : 0.000000
[ 1568.795023] .nr_spread_over : 817
[ 1568.795023] .nr_running : 0
[ 1568.795023] .load : 0
[ 1568.795023] .load_avg : 0.000000
[ 1568.795023] .load_period : 0.000000
[ 1568.795023] .load_contrib : 0
[ 1568.795023] .load_tg : 0
[ 1568.795023]
[ 1568.795023] rt_rq[0]:
[ 1568.795023] .rt_nr_running : 0
[ 1568.795023] .rt_throttled : 0
[ 1568.795023] .rt_time : 0.000000
[ 1568.795023] .rt_runtime : 950.000000
[ 1568.795023]
[ 1568.795023] runnable tasks:
[ 1568.795023] task PID tree-key switches prio
exec-runtime sum-exec sum-sleep
[ 1568.795023]
----------------------------------------------------------------------------------------------------------
[ 1568.795023]
[ 1568.795023] cpu#1, 2666.627 MHz
[ 1568.795023] .nr_running : 0
[ 1568.795023] .load : 0
[ 1568.795023] .nr_switches : 2079916
[ 1568.795023] .nr_load_updates : 319982
[ 1568.795023] .nr_uninterruptible : 94
[ 1568.795023] .next_balance : 4296.235484
[ 1568.795023] .curr->pid : 0
[ 1568.795023] .clock : 1568784.396001
[ 1568.795023] .cpu_load[0] : 0
[ 1568.795023] .cpu_load[1] : 0
[ 1568.795023] .cpu_load[2] : 0
[ 1568.795023] .cpu_load[3] : 0
[ 1568.795023] .cpu_load[4] : 0
[ 1568.795023] .yld_count : 4
[ 1568.795023] .sched_count : 2308965
[ 1568.795023] .sched_goidle : 690586
[ 1568.795023] .avg_idle : 1000000
[ 1568.795023] .ttwu_count : 1159413
[ 1568.795023] .ttwu_local : 419527
[ 1568.795023]
[ 1568.795023] cfs_rq[1]:/autogroup-12
[ 1568.795023] .exec_clock : 320.130894
[ 1568.795023] .MIN_vruntime : 0.000001
[ 1568.795023] .min_vruntime : 1163.780537
[ 1568.795023] .max_vruntime : 0.000001
[ 1568.795023] .spread : 0.000000
[ 1568.795023] .spread0 : -154263.425399
[ 1568.795023] .nr_spread_over : 178
[ 1568.795023] .nr_running : 0
[ 1568.795023] .load : 0
[ 1568.795023] .load_avg : 2559.999744
[ 1568.795023] .load_period : 5.241463
[ 1568.795023] .load_contrib : 488
[ 1568.795023] .load_tg : 488
[ 1568.795023] .se->exec_start : 1568778.912838
[ 1568.795023] .se->vruntime : 183270.984759
[ 1568.795023] .se->sum_exec_runtime : 320.130894
[ 1568.795023] .se->statistics.wait_start : 0.000000
[ 1568.795023] .se->statistics.sleep_start : 0.000000
[ 1568.795023] .se->statistics.block_start : 0.000000
[ 1568.795023] .se->statistics.sleep_max : 0.000000
[ 1568.795023] .se->statistics.block_max : 0.000000
[ 1568.795023] .se->statistics.exec_max : 1.000806
[ 1568.795023] .se->statistics.slice_max : 0.030516
[ 1568.795023] .se->statistics.wait_max : 2.745282
[ 1568.795023] .se->statistics.wait_sum : 8.576517
[ 1568.795023] .se->statistics.wait_count : 1446
[ 1568.795023] .se->load.weight : 2
[ 1568.795023]
[ 1568.795023] cfs_rq[1]:/
[ 1568.795023] .exec_clock : 120018.151379
[ 1568.795023] .MIN_vruntime : 0.000001
[ 1568.795023] .min_vruntime : 183276.982041
[ 1568.795023] .max_vruntime : 0.000001
[ 1568.795023] .spread : 0.000000
[ 1568.795023] .spread0 : 27849.776105
[ 1568.795023] .nr_spread_over : 1197
[ 1568.795023] .nr_running : 0
[ 1568.795023] .load : 0
[ 1568.795023] .load_avg : 0.000000
[ 1568.795023] .load_period : 0.000000
[ 1568.795023] .load_contrib : 0
[ 1568.795023] .load_tg : 0
[ 1568.795023]
[ 1568.795023] rt_rq[1]:
[ 1568.795023] .rt_nr_running : 0
[ 1568.795023] .rt_throttled : 0
[ 1568.795023] .rt_time : 0.000000
[ 1568.795023] .rt_runtime : 950.000000
[ 1568.795023]
[ 1568.795023] runnable tasks:
[ 1568.795023] task PID tree-key switches prio
exec-runtime sum-exec sum-sleep
[ 1568.795023]
----------------------------------------------------------------------------------------------------------
[ 1568.795023]
--
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