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

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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 	update ulist's comments since they are out of date.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….. 

Thanks,
Wang
> 
> Josef
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