Bartosz Fabianowski wrote:
You wrote that Giant is needed in 6.0 and now you write it has been
removed.
In 4.x, every UFS write requires the Giant lock. In 6.x, Giant is not
normally required, making file system operations faster. When you
enable QUOTA, you basically get back to the 4.x behavior where Giant
is needed for each write. This is why in 6.x UFS will normally be
faster but if you enable QUOTA, you lose the newly gained performance
again.
Why isn't QUOTA mpsafe then?
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