On Wed, 21 Jul 2021 18:41:49 -0700 Jaegeuk Kim wrote:
>
>This tries to fix priority inversion in the below condition resulting in
>long checkpoint delay.

If you are right and the patch makes real sense, feel free to specify a bit
more on the priority inversion you are trying to fix, and how the fix helps
shorten the checkpoint delay. And test data is welcome.

>
>f2fs_get_node_info()
> - nat_tree_lock
>  -> sleep in journal_rwsem
>                                     checkpoint
>                                     - waiting for nat_tree_lock


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