da.4: Don't document softtimeout
kern.cam.da.default_softtimeout currently does nothing. It sets a value
in the CCB that SIMs could look at, only none do. Leave it undocumented
until it actually does something. It was introduced to allow a 'soft
recovery' to be started when things were taking too long in the SIM by
not scheduling new I/O, or other measures the SIM knew would help when
it seemed like things were getting 'backed up'. No SIM in the FreeBSD
tree implements this and scsi_da doesn't use it other than to pass it
down, so best remove it from the documentation until it does something.
Sponsored by: Netflix
Fixes: 53af9c235f
Reviewed by: gbe
Differential Review: https://reviews.freebsd.org/D36518
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@ -133,13 +133,6 @@ variables and
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.Xr loader 8
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tunables:
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.Bl -tag -width 12
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.It Va kern.cam.da.default_softtimeout
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Soft I/O timeout (ms). The default is 0.
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Attempting to set this value to a
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time span longer than
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.It kern.cam.da.default_timeout
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will return
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.Dv EINVAL .
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.It Va kern.cam.da.default_timeout
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This variable determines how long the
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.Nm
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