Re: [PATCH v3 1/2] Btrfs: rework ulist with list+rb_tree

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> 
> On 01/28/2014 11:03 AM, Wang Shilong wrote:
>> Hello Josef,
>> 
>>> On 01/27/2014 04:59 AM, Wang Shilong wrote:
>>>> We are really suffering from now ulist's implementation, some developers
>>>> gave their try, and i just gave some of my ideas for things:
>>>> 
>>>>  1. use list+rb_tree instead of arrary+rb_tree
>>>> 
>>>>  2. add cur_list to iterator rather than ulist structure.
>>>> 
>>>>  3. add seqnum into every node when they are added, this is
>>>>  used to do selfcheck when iterating node.
>>>> 
>>>> I noticed Zach Brown's comments before, long term is to kick off
>>>> ulist implementation, however, for now, we need at least avoid
>>>> arrary from ulist.
>>>> 
>>>> Cc: Liu Bo <bo.li.liu@xxxxxxxxxx>
>>>> Cc: Josef Bacik <jbacik@xxxxxx>
>>>> Cc: Zach Brown <zab@xxxxxxxxxx>
>>>> Signed-off-by: Wang Shilong <wangsl.fnst@xxxxxxxxxxxxxx>
>>>> ---
>>>> v2->v3:
>>>> 	only do selfchecks with CONFIG_BTRFS_DEBUG enabled(Thanks to Josef!)
>>>> 	update ulist's comments since they are out of date.
>>>> v1->v2:
>>>> 	add RFC title since this patch needs more reviews and comments.
>>>> 	fix a used after free bug in ulist_fini().
>>> I like the patch but it doesn't build since things like qgroups rely on ulist->nnodes.  You need to fix that in your patch and make sure this stuff compiles.  Thanks,
>> Sorry about if it did not compile.
>> 
>> but I really compiled and tested it  in my box, did you apply your qgroup patches?
>> This patch is based on btrfs-next without your previous qgroup patches.
>> 
>> Anyway i will double check it…..
>> 
> Yeah I thought I was doing something wrong but I'm definitely on my master branch which doesn't have my qgroup patches in it.  If it's still working for you now just wait a bit for me to push out this next update and rebase onto it and resend.  Thanks,
> 
oops, i noticed what was wrong here, i am sorry for inconvenience  for you!~_~
I will resend this patch right now.

Wang
> Josef

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