Re: Testing a custom kernel (2.6.39) with native reiser4 support

[Sandro Souza <escovadordebits@gmail.com>]

Hello my friends.

Edward, you ARE the man! :D

Your patch works wonderfully.

Inside my virtual machine, I made a new custom distro (based on debian
squeeze, but with 2.6.39 kernel, patched with reiser4 native support),
and I was able to install it in another virtual machine (/boot as
reiser3, / as reiser4 and /home as reiser4).

Everything are working fine now. :D

Now, I'll burn this new custom distro in a DVD and I'll install it on
my notebook (no more VM) to test it.

Please, may you tell me if the reiser4 has some auto-defragmentation feature?

The compression feature (gzip1) is amazing. If we have
auto-defragmentation feature also.....man!!! No words. :D

Thank you and the entire reiser4 team. You all are making the
difference. REALLY!

2012/5/20 Edward Shishkin <edward.shishkin@gmail.com>:
> Hello.
>
> Please, try the attached patch: it should help...
> I have also fixed a deadlock because of reiser4
> lock ordering violation:
>
> do_lo_send_aops() keeps page locked and calls file_update_time()
> which calls reiser4_update_sd, which tries to acquire a longterm
> lock (bad).
>
> Thanks,
> Edward.
>
>
> On 05/15/2012 12:55 AM, Sandro Souza wrote:
>>
>> Hello my friends.
>>
>> I made a new custom distro based on debian squeeze, but with 2.6.39
>> kernel, patched with reiser4
>
>
> [...]
>
>
>> Trying to copy a folder from a reiser3 partition to a reiser4
>> partition, I got error messages.
>>
>> Testing my custom kernel with "preemption model" in "Preemptible
>> Kernel", I got these messages:
>>
>> [  286.945598] ------------[ cut here ]------------
>> [  286.945609] kernel BUG at fs/reiser4/block_alloc.c:151!
>> [  286.945617] invalid opcode: 0000 [#1] PREEMPT SMP
>> [  286.945626] last sysfs file:
>
>
> [...]
>
>
>> ffffffff8118e00d
>> [  286.945808] Call Trace:
>> [  286.945817]  [<ffffffff8117b484>] ? jnode_make_dirty_locked+0x112/0x18f
>> [  286.945824]  [<ffffffff8117b529>] ? znode_make_dirty+0x28/0x87
>> [  286.945831]  [<ffffffff8118e00d>] ? update_sd+0x344/0x3a4
>> [  286.945838]  [<ffffffff81387a46>] ? sub_preempt_count+0x83/0x94
>> [  286.945845]  [<ffffffff8118e096>] ? write_sd_by_inode_common+0x29/0x92
>> [  286.945852]  [<ffffffff8103cb67>] ? get_parent_ip+0x9/0x1b
>> [  286.945858]  [<ffffffff8118512b>] ? reiser4_dirty_inode+0x19/0x73
>> [  286.945865]  [<ffffffff810edecb>] ? T.1132+0x12/0x2e
>> [  286.945872]  [<ffffffff8104b288>] ? current_fs_time+0x1e/0x24
>> [  286.945878]  [<ffffffff81112ddb>] ? __mark_inode_dirty+0x28/0x1c8
>> [  286.945885]  [<ffffffff81108169>] ? file_update_time+0xf7/0x126
>> [  286.945891]  [<ffffffff811924ee>] ?
>> reiser4_write_end_careful+0x147/0x184
>> [  286.945897]  [<ffffffff81115083>] ? pipe_to_file+0x152/0x161
>> [  286.945903]  [<ffffffff81387af5>] ? add_preempt_count+0x9e/0xa0
>> [  286.945909]  [<ffffffff81114f31>] ?
>> generic_file_splice_write+0x133/0x133
>> [  286.945914]  [<ffffffff811143cb>] ? splice_from_pipe_feed+0x6d/0xed
>> [  286.945920]  [<ffffffff81114eb3>] ?
>> generic_file_splice_write+0xb5/0x133
>> [  286.945933]  [<ffffffff811162a6>] ? sys_splice+0x2f8/0x3d2
>> [  286.945939]  [<ffffffff8138a7d2>] ? system_call_fastpath+0x16/0x1b
>> [  286.945944] Code: 25 80 cc 00 00 53 48 83 ec 08 48 8b 80 38 05 00
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