Valdis.Kletnieks@vt.edu writes:

quoted text
> (Or is 'df' simply a known way to force execution of a code path that ends up
> fixing the counts as a side-effect?)

Yes. df calls statfs(2), and FAT counts free clusters for ->f_ffree for
it. Then, the free clusters count is fixed as a side-effect.
-- 
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
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