Re: [PATCH] btrfs: trace: Remove unnecessary fs_info parameter for btrfs__reserve_extent event class

Qu Wenruo
2018-04-29T00:34:05Z

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On 2018年04月29日 01:45, David Sterba wrote:
> On Sat, Apr 28, 2018 at 06:42:06PM +0200, David Sterba wrote:
>> On Thu, Apr 26, 2018 at 02:24:25PM +0800, Qu Wenruo wrote:
>>> fs_info can be extracted from btrfs_block_group_cache, and all
>>> btrfs_block_group_cache is created by btrfs_create_block_group_cache()
>>> with fs_info initialized, no need to worry about NULL pointer
>>> dereference.
>>
>> Famous last words.
>
> And it's a false alert, it's caused by another patch yet to be
> identified.

Yep, I also spent serval minutes to find this out.
As in that test there is nothing related to btrfs_reserve_extent() trace
event.

Thanks,
Qu

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