Does nilfs2 do any in-place writes?

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Hi,

Recently my raspberry pi destroyed a 32GB SD card after only 4 days,
because that cheap SD card seemed to have issues with wear-leveling.
The areas where the ext4 journal was stored were no longer read- or writeable.

I wonder which write-access patterns nilfs2 does exhibit.
Are there any frequent in-place updates to statically positioned data
structures (superblock, translation tables, ...) or is the data mostly
written sequentially?

Thank you in advance, Clemens
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