generic/738 : add missing _fixed_by_git_commit line to the test

Add the usual  _fixed_by_kernel_commit  line so the user can find
that the hang is cured by

    ab23a7768739  ("xfs: per-cpu deferred inode inactivation queues")

The hung task call trace would be as below:
[   20.535519]       Not tainted 5.14.0-rc4+ #27
[   20.537855] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[   20.539420] task:738             state:D stack:14544 pid: 7124 ppid:   753 flags:0x00004002
[   20.540892] Call Trace:
[   20.541424]  __schedule+0x22d/0x6c0
[   20.542128]  schedule+0x3f/0xa0
[   20.542751]  percpu_rwsem_wait+0x100/0x130
[   20.543516]  ? percpu_free_rwsem+0x30/0x30
[   20.544259]  __percpu_down_read+0x44/0x50
[   20.545002]  xfs_trans_alloc+0x19a/0x1f0
[   20.545747]  xfs_free_eofblocks+0x47/0x100
[   20.546519]  xfs_inode_mark_reclaimable+0x115/0x160
[   20.547398]  destroy_inode+0x36/0x70
[   20.548077]  prune_icache_sb+0x79/0xb0
[   20.548789]  super_cache_scan+0x159/0x1e0
[   20.549536]  shrink_slab.constprop.0+0x1b1/0x370
[   20.550363]  drop_slab_node+0x1d/0x40
[   20.551041]  drop_slab+0x30/0x70
[   20.551600]  drop_caches_sysctl_handler+0x6b/0x80
[   20.552311]  proc_sys_call_handler+0x12b/0x250
[   20.552931]  new_sync_write+0x117/0x1b0
[   20.553462]  vfs_write+0x1bd/0x250
[   20.553914]  ksys_write+0x5a/0xd0
[   20.554381]  do_syscall_64+0x3b/0x90
[   20.554854]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[   20.555481] RIP: 0033:0x7f90928d3300
[   20.555946] RSP: 002b:00007ffc2b50b998 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   20.556853] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f90928d3300
[   20.557686] RDX: 0000000000000002 RSI: 000055a5d6c47750 RDI: 0000000000000001
[   20.558524] RBP: 000055a5d6c47750 R08: 0000000000000007 R09: 0000000000000073
[   20.559335] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002
[   20.560154] R13: 00007f90929ae760 R14: 0000000000000002 R15: 00007f90929a99e0

localhost login: [   30.773559] INFO: task 738:7124 blocked for more than 20 seconds.
[   30.775236]       Not tainted 5.14.0-rc4+ #27
[   30.777449] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[   30.779729] task:738             state:D stack:14544 pid: 7124 ppid:   753 flags:0x00004002
[   30.781267] Call Trace:
[   30.781850]  __schedule+0x22d/0x6c0
[   30.782618]  schedule+0x3f/0xa0
[   30.783297]  percpu_rwsem_wait+0x100/0x130
[   30.784110]  ? percpu_free_rwsem+0x30/0x30
[   30.785085]  __percpu_down_read+0x44/0x50
[   30.786071]  xfs_trans_alloc+0x19a/0x1f0
[   30.786877]  xfs_free_eofblocks+0x47/0x100
[   30.787727]  xfs_inode_mark_reclaimable+0x115/0x160
[   30.788708]  destroy_inode+0x36/0x70
[   30.789395]  prune_icache_sb+0x79/0xb0
[   30.790056]  super_cache_scan+0x159/0x1e0
[   30.790712]  shrink_slab.constprop.0+0x1b1/0x370
[   30.791381]  drop_slab_node+0x1d/0x40
[   30.791924]  drop_slab+0x30/0x70
[   30.792469]  drop_caches_sysctl_handler+0x6b/0x80
[   30.793328]  proc_sys_call_handler+0x12b/0x250
[   30.793948]  new_sync_write+0x117/0x1b0
[   30.794471]  vfs_write+0x1bd/0x250
[   30.794941]  ksys_write+0x5a/0xd0
[   30.795414]  do_syscall_64+0x3b/0x90
[   30.795928]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[   30.796595] RIP: 0033:0x7f90928d3300
[   30.797090] RSP: 002b:00007ffc2b50b998 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   30.798033] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f90928d3300
[   30.798852] RDX: 0000000000000002 RSI: 000055a5d6c47750 RDI: 0000000000000001
[   30.799703] RBP: 000055a5d6c47750 R08: 0000000000000007 R09: 0000000000000073
[   30.800833] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002
[   30.801764] R13: 00007f90929ae760 R14: 0000000000000002 R15: 00007f90929a99e0
[   30.802628] INFO: task xfs_io:7130 blocked for more than 10 seconds.
[   30.803421]       Not tainted 5.14.0-rc4+ #27
[   30.803985] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[   30.804979] task:xfs_io          state:D stack:13712 pid: 7130 ppid:  7127 flags:0x00000002
[   30.806013] Call Trace:
[   30.806399]  __schedule+0x22d/0x6c0
[   30.806867]  schedule+0x3f/0xa0
[   30.807334]  rwsem_down_write_slowpath+0x1d8/0x510
[   30.808018]  thaw_super+0xd/0x20
[   30.808748]  __x64_sys_ioctl+0x5d/0xb0
[   30.809292]  do_syscall_64+0x3b/0x90
[   30.809797]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[   30.810454] RIP: 0033:0x7ff1b48c5d1b
[   30.810943] RSP: 002b:00007fff0bf88ac0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   30.811874] RAX: ffffffffffffffda RBX: 000055b93ae5fc40 RCX: 00007ff1b48c5d1b
[   30.812743] RDX: 00007fff0bf88b2c RSI: ffffffffc0045878 RDI: 0000000000000003
[   30.813583] RBP: 000055b93ae60fe0 R08: 0000000000000000 R09: 0000000000000000
[   30.814497] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[   30.815413] R13: 000055b93a3a94e9 R14: 0000000000000000 R15: 000055b93ae61150

Signed-off-by: Li Chen <chenl311@chinatelecom.cn>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Zorro Lang <zlang@redhat.com>
Signed-off-by: Zorro Lang <zlang@kernel.org>

diff --git a/tests/generic/738 b/tests/generic/738
index 6f1ea7f8fa4096fcdd20b17cd96fc1197db2bc87..b0503025147d923d56753b1c2f39949599ddd4be 100755 (executable)
--- a/tests/generic/738
+++ b/tests/generic/738
@@ -9,6 +9,9 @@
 . ./common/preamble
 _begin_fstest auto quick freeze
 
+[ "$FSTYP" = "xfs" ] && _fixed_by_kernel_commit ab23a7768739 \
+       "xfs: per-cpu deferred inode inactivation queues"
+
 _cleanup()
 {
        xfs_freeze -u $SCRATCH_MNT 2>/dev/null