K 10
svn:author
V 3
jch
K 8
svn:date
V 27
2015-08-30T13:44:39.043476Z
K 7
svn:log
V 559
Put r284245 back in place:  If at first this fix was seen as a temporary
workaround for a callout(9) issue, it turns out it is instead the right
way to use callout in mpsafe mode without using callout_drain().

r284245 commit message:

Fix a callout race condition introduced in TCP timers callouts with r281599.
In TCP timer context, it is not enough to check callout_stop() return value
to decide if a callout is still running or not, previous callout_reset()
return values have also to be checked.

Differential Revision:	https://reviews.freebsd.org/D2763

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