In for-linus branch, when xfstests was executed, the following warning
messages were output.
Thanks,
Tsutomu
===========================================================================
Nov 7 13:51:00 luna kernel: [ 824.063444] device fsid
2f0ad8a9-93d5-4c99-837f-9db99543133b devid 1 transid 1822 /dev/sdd4
Nov 7 13:51:00 luna kernel: [ 824.063946] btrfs: disk space caching is enabled
Nov 7 13:51:00 luna kernel: [ 824.097652] block group 1103101952 has an wrong
amount of free space
Nov 7 13:51:00 luna kernel: [ 824.097873] btrfs: failed to load free space
cache for block group 1103101952
Nov 7 13:51:01 luna kernel: [ 824.413821] ------------[ cut here ]------------
Nov 7 13:51:01 luna kernel: [ 824.413855] WARNING: at
fs/btrfs/extent-tree.c:124 btrfs_put_block_group+0x4f/0x67 [btrfs]()
Nov 7 13:51:01 luna kernel: [ 824.413858] Hardware name: PRIMERGY
Nov 7 13:51:01 luna kernel: [ 824.413860] Modules linked in: btrfs
zlib_deflate crc32c libcrc32c nfsd lockd nfs_acl auth_rpcgss autofs4 sunrpc
8021q garp stp llc cpufreq_ondemand acpi_cpufreq freq_table mperf cachefiles
fscache ipv6 ext3 jbd dm_mirror dm_region_hash dm_log dm_mod kvm uinput ppdev
parport_pc parport sg pcspkr i2c_i801 i2c_core iTCO_wdt iTCO_vendor_support tg3
shpchp pci_hotplug i3000_edac edac_core ext4 mbcache jbd2 crc16 sd_mod
crc_t10dif megaraid_sas sr_mod cdrom floppy pata_acpi ata_generic ata_piix
libata scsi_mod [last unloaded: microcode]
Nov 7 13:51:01 luna kernel: [ 824.413915] Pid: 7472, comm: umount Not tainted
3.1.0mod+ #1
Nov 7 13:51:01 luna kernel: [ 824.413917] Call Trace:
Nov 7 13:51:01 luna kernel: [ 824.413925] [<ffffffff8104b6fe>]
warn_slowpath_common+0x85/0x9d
Nov 7 13:51:01 luna kernel: [ 824.413929] [<ffffffff8104b730>]
warn_slowpath_null+0x1a/0x1c
Nov 7 13:51:01 luna kernel: [ 824.413943] [<ffffffffa043691c>]
btrfs_put_block_group+0x4f/0x67 [btrfs]
Nov 7 13:51:01 luna kernel: [ 824.413956] [<ffffffffa043710c>]
btrfs_free_block_groups+0xde/0x258 [btrfs]
Nov 7 13:51:01 luna kernel: [ 824.413973] [<ffffffffa0447a59>]
close_ctree+0x22c/0x325 [btrfs]
Nov 7 13:51:01 luna kernel: [ 824.413978] [<ffffffff8112e426>] ?
dispose_list+0x3e/0x4f
Nov 7 13:51:01 luna kernel: [ 824.413989] [<ffffffffa042cb7d>]
btrfs_put_super+0x1d/0x2c [btrfs]
Nov 7 13:51:01 luna kernel: [ 824.413994] [<ffffffff8111bcdc>]
generic_shutdown_super+0x5b/0xba
Nov 7 13:51:01 luna kernel: [ 824.413998] [<ffffffff8111bdba>]
kill_anon_super+0x16/0x22
Nov 7 13:51:01 luna kernel: [ 824.414002] [<ffffffff8111c5b2>]
deactivate_locked_super+0x26/0x57
Nov 7 13:51:01 luna kernel: [ 824.414006] [<ffffffff8111cfe5>]
deactivate_super+0x45/0x4c
Nov 7 13:51:01 luna kernel: [ 824.414010] [<ffffffff81132237>]
mntput_no_expire+0x143/0x14c
Nov 7 13:51:01 luna kernel: [ 824.414822] [<ffffffff81132de3>]
sys_umount+0x2d9/0x304
Nov 7 13:51:01 luna kernel: [ 824.414838] [<ffffffff81122c69>] ?
path_put+0x22/0x26
Nov 7 13:51:01 luna kernel: [ 824.414846] [<ffffffff813af4c2>]
system_call_fastpath+0x16/0x1b
Nov 7 13:51:01 luna kernel: [ 824.414852] ---[ end trace 1167c1ef9b771b7f ]---
Nov 7 13:51:01 luna kernel: [ 824.418017] ------------[ cut here ]------------
Nov 7 13:51:01 luna kernel: [ 824.418039] WARNING: at
fs/btrfs/extent-tree.c:7158 btrfs_free_block_groups+0x220/0x258 [btrfs]()
Nov 7 13:51:01 luna kernel: [ 824.418042] Hardware name: PRIMERGY
Nov 7 13:51:01 luna kernel: [ 824.418044] Modules linked in: btrfs
zlib_deflate crc32c libcrc32c nfsd lockd nfs_acl auth_rpcgss autofs4 sunrpc
8021q garp stp llc cpufreq_ondemand acpi_cpufreq freq_table mperf cachefiles
fscache ipv6 ext3 jbd dm_mirror dm_region_hash dm_log dm_mod kvm uinput ppdev
parport_pc parport sg pcspkr i2c_i801 i2c_core iTCO_wdt iTCO_vendor_support tg3
shpchp pci_hotplug i3000_edac edac_core ext4 mbcache jbd2 crc16 sd_mod
crc_t10dif megaraid_sas sr_mod cdrom floppy pata_acpi ata_generic ata_piix
libata scsi_mod [last unloaded: microcode]
Nov 7 13:51:01 luna kernel: [ 824.418107] Pid: 7472, comm: umount Tainted: G
W 3.1.0mod+ #1
Nov 7 13:51:01 luna kernel: [ 824.418110] Call Trace:
Nov 7 13:51:01 luna kernel: [ 824.418117] [<ffffffff8104b6fe>]
warn_slowpath_common+0x85/0x9d
Nov 7 13:51:01 luna kernel: [ 824.418121] [<ffffffff8104b730>]
warn_slowpath_null+0x1a/0x1c
Nov 7 13:51:01 luna kernel: [ 824.418137] [<ffffffffa043724e>]
btrfs_free_block_groups+0x220/0x258 [btrfs]
Nov 7 13:51:01 luna kernel: [ 824.418157] [<ffffffffa0447a59>]
close_ctree+0x22c/0x325 [btrfs]
Nov 7 13:51:01 luna kernel: [ 824.418161] [<ffffffff8112e426>] ?
dispose_list+0x3e/0x4f
Nov 7 13:51:01 luna kernel: [ 824.418175] [<ffffffffa042cb7d>]
btrfs_put_super+0x1d/0x2c [btrfs]
Nov 7 13:51:01 luna kernel: [ 824.418180] [<ffffffff8111bcdc>]
generic_shutdown_super+0x5b/0xba
Nov 7 13:51:01 luna kernel: [ 824.418185] [<ffffffff8111bdba>]
kill_anon_super+0x16/0x22
Nov 7 13:51:01 luna kernel: [ 824.418190] [<ffffffff8111c5b2>]
deactivate_locked_super+0x26/0x57
Nov 7 13:51:01 luna kernel: [ 824.418194] [<ffffffff8111cfe5>]
deactivate_super+0x45/0x4c
Nov 7 13:51:01 luna kernel: [ 824.418199] [<ffffffff81132237>]
mntput_no_expire+0x143/0x14c
Nov 7 13:51:01 luna kernel: [ 824.418203] [<ffffffff81132de3>]
sys_umount+0x2d9/0x304
Nov 7 13:51:01 luna kernel: [ 824.418207] [<ffffffff81122c69>] ?
path_put+0x22/0x26
Nov 7 13:51:01 luna kernel: [ 824.418212] [<ffffffff813af4c2>]
system_call_fastpath+0x16/0x1b
Nov 7 13:51:01 luna kernel: [ 824.418215] ---[ end trace 1167c1ef9b771b80 ]---
Nov 7 13:51:01 luna kernel: [ 824.418219] space_info 1 has 1892356096 free,
is not full
Nov 7 13:51:01 luna kernel: [ 824.418223] space_info total=2155872256,
used=263507968, pinned=0, reserved=8192, may_use=0, readonly=0
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