| Commit message (Collapse) | Author | Age | Files | Lines |
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The SYSCTL_NODE macro defines a list that stores all child-elements of
that node. If there's no SYSCTL_DECL macro anywhere else, there's no
reason why it shouldn't be static.
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EBUSY was probably used as a workaround for the deadlock fixed in r207671.
Approved by: pjd
X-MFC after: r207671
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- Improve sysctl description a bit.
Submitted by: Ivan Voras <ivoras@gmail.com>
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It creates very huge provider (41PB) /dev/gzero.
On BIO_READ request it zero-fills bio_data and on BIO_WRITE it does nothing.
You can also set kern.geom.zero.clear sysctl to 0 to do nothing even for
BIO_READ.
I'm using it for performance testing where it is very helpful.
MFC after: 3 days
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