Chris Mason wrote:
>> # umount /mnt/temp/
>>
>> [ 457.980372] ------------[ cut here ]------------
>> [ 457.980377] kernel BUG at fs/buffer.c:2644!
>
> Whoops. Please try this:
>
> diff -r 38b36aaaa731 disk-io.c
> --- a/disk-io.c Fri Jun 15 13:50:20 2007 -0400
> +++ b/disk-io.c Fri Jun 15 15:12:26 2007 -0400
> @@ -541,6 +541,7 @@ int write_ctree_super(struct btrfs_trans
> else
> ret = submit_bh(WRITE, bh);
> if (ret == -EOPNOTSUPP) {
> + lock_buffer(bh);
> set_buffer_uptodate(bh);
> root->fs_info->do_barriers = 0;
> ret = submit_bh(WRITE, bh);
>
sorry, with the patch applied:
[ 147.475077] BUG: at
/home/florian/system/btrfs_test/btrfs-0.2/disk-io.c:534
write_ctree_super()
[ 147.475082]
[ 147.475083] Call Trace:
[ 147.475096] [<ffffffff880957f7>] :btrfs:write_ctree_super+0x70/0x140
[ 147.475106] [<ffffffff88096ec5>]
:btrfs:btrfs_commit_transaction+0x43e/0x5c0
[ 147.475112] [<ffffffff8022a2a6>] __writeback_single_inode+0x34f/0x361
[ 147.475121] [<ffffffff88096fec>]
:btrfs:btrfs_commit_transaction+0x565/0x5c0
[ 147.475126] [<ffffffff8027b4eb>] autoremove_wake_function+0x0/0x2e
[ 147.475136] [<ffffffff88095915>] :btrfs:close_ctree+0x4e/0x191
[ 147.475141] [<ffffffff8022e22e>] dispose_list+0xad/0xc9
[ 147.475146] [<ffffffff8029fd1a>] invalidate_inodes+0xc3/0xd5
[ 147.475155] [<ffffffff8808d170>] :btrfs:btrfs_put_super+0x10/0x31
[ 147.475159] [<ffffffff80299849>] generic_shutdown_super+0x5b/0xd2
[ 147.475163] [<ffffffff802998e6>] kill_block_super+0x26/0x3b
[ 147.475167] [<ffffffff80299971>] deactivate_super+0x3d/0x55
[ 147.475172] [<ffffffff802a0e4b>] sys_umount+0x1ca/0x1f1
[ 147.475177] [<ffffffff8021fd18>] sys_newstat+0x19/0x31
[ 147.475184] [<ffffffff80250d5e>] system_call+0x7e/0x83
[ 147.475188]
[ 147.476020] BUG: at
/home/florian/system/btrfs_test/btrfs-0.2/disk-io.c:534
write_ctree_super()
[ 147.476023]
[ 147.476024] Call Trace:
[ 147.476033] [<ffffffff880957f7>] :btrfs:write_ctree_super+0x70/0x140
[ 147.476042] [<ffffffff88096ec5>]
:btrfs:btrfs_commit_transaction+0x43e/0x5c0
[ 147.476048] [<ffffffff8022a2a6>] __writeback_single_inode+0x34f/0x361
[ 147.476057] [<ffffffff88096fec>]
:btrfs:btrfs_commit_transaction+0x565/0x5c0
[ 147.476061] [<ffffffff8027b4eb>] autoremove_wake_function+0x0/0x2e
[ 147.476066] [<ffffffff802554d9>] mutex_lock+0xd/0x1d
[ 147.476075] [<ffffffff8809592d>] :btrfs:close_ctree+0x66/0x191
[ 147.476080] [<ffffffff8022e22e>] dispose_list+0xad/0xc9
[ 147.476085] [<ffffffff8029fd1a>] invalidate_inodes+0xc3/0xd5
[ 147.476096] [<ffffffff8808d170>] :btrfs:btrfs_put_super+0x10/0x31
[ 147.476100] [<ffffffff80299849>] generic_shutdown_super+0x5b/0xd2
[ 147.476104] [<ffffffff802998e6>] kill_block_super+0x26/0x3b
[ 147.476108] [<ffffffff80299971>] deactivate_super+0x3d/0x55
[ 147.476112] [<ffffffff802a0e4b>] sys_umount+0x1ca/0x1f1
[ 147.476118] [<ffffffff8021fd18>] sys_newstat+0x19/0x31
[ 147.476124] [<ffffffff80250d5e>] system_call+0x7e/0x83
[ 147.476128]
[ 147.482579] BUG: at
/home/florian/system/btrfs_test/btrfs-0.2/disk-io.c:534
write_ctree_super()
[ 147.482582]
[ 147.482583] Call Trace:
[ 147.482592] [<ffffffff880957f7>] :btrfs:write_ctree_super+0x70/0x140
[ 147.482601] [<ffffffff88095949>] :btrfs:close_ctree+0x82/0x191
[ 147.482605] [<ffffffff8022e22e>] dispose_list+0xad/0xc9
[ 147.482611] [<ffffffff8029fd1a>] invalidate_inodes+0xc3/0xd5
[ 147.482619] [<ffffffff8808d170>] :btrfs:btrfs_put_super+0x10/0x31
[ 147.482623] [<ffffffff80299849>] generic_shutdown_super+0x5b/0xd2
[ 147.482627] [<ffffffff802998e6>] kill_block_super+0x26/0x3b
[ 147.482631] [<ffffffff80299971>] deactivate_super+0x3d/0x55
[ 147.482636] [<ffffffff802a0e4b>] sys_umount+0x1ca/0x1f1
[ 147.482641] [<ffffffff8021fd18>] sys_newstat+0x19/0x31
[ 147.482648] [<ffffffff80250d5e>] system_call+0x7e/0x83
[ 147.482652]
[ 147.483066] VFS: brelse: Trying to free free buffer
[ 147.483069] BUG: at fs/buffer.c:1164 __brelse()
[ 147.483071]
[ 147.483072] Call Trace:
[ 147.483081] [<ffffffff88095982>] :btrfs:close_ctree+0xbb/0x191
[ 147.483086] [<ffffffff8022e22e>] dispose_list+0xad/0xc9
[ 147.483091] [<ffffffff8029fd1a>] invalidate_inodes+0xc3/0xd5
[ 147.483099] [<ffffffff8808d170>] :btrfs:btrfs_put_super+0x10/0x31
[ 147.483103] [<ffffffff80299849>] generic_shutdown_super+0x5b/0xd2
[ 147.483107] [<ffffffff802998e6>] kill_block_super+0x26/0x3b
[ 147.483111] [<ffffffff80299971>] deactivate_super+0x3d/0x55
[ 147.483116] [<ffffffff802a0e4b>] sys_umount+0x1ca/0x1f1
[ 147.483121] [<ffffffff8021fd18>] sys_newstat+0x19/0x31
[ 147.483127] [<ffffffff80250d5e>] system_call+0x7e/0x83
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