Mention this in man page.

Update param list in man page.



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When we do a lookup, we first try without the lock, if this gives
us a refcnt==0 objhead, we try again, with the lock.

When we deref an objhead, we would decrement the refcnt, holding oh->mtx,
then lock the critbit-lock and remove it from the tree.

It might be possible for a locked lookup to find an oh we just decremented
the refcnt off, and we did not check for refcnt==0 in that case.

Fix this, by removing the oh from the tree, holding the critbit-lock,
before decrementing the refcnt.  This way, a locked lookup can never
find a refcnt==0 oh in the tree, and the unlocked lookup still catches
this with the refcnt==0 check.




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"Connection: close" or if a HTTP/1.0 backend does not send "Connection: keep-alive".

Fixes	#495



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given.



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of workspace, but the message will make more sense...



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Fixes	#640



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properly close the connection when doing so.

Fixes 524



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a table produced from the CLI parameter tables.

In the future all updates to these descriptions SHALL happen in the
CLI tables in the C source code.

Fixes	#419



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which only does something if -DDIAGNOSTIC was configured.

First secret superpower is "-x dumpmdoc" which emits a -mdoc suitable
table of all run-time parameters, which can be absorbed into the
varnishd.1 manual page, so we do not have to maintain the text in
two different places.



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Fixes #592



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out.



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storage space.

Fixes	590



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sockets as fast as we can, so that a new copy of varnishd can get at them.

Fixes	#622



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If the master pid is active when we start, we issue a message about
this, (with a hint about -n) and exit.

If the master pid is not active, but the child pid is, we issue a
message about it presumably being busy dying, dump the SHMFILE and
create a new one.  (This only saves our bacon, if the dying
process manages to close the listening sockets before we need them).

This should end any confusion that might arise from accidentally
running multiple varnishes at the same time.

Fixes #620



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the worker thread.



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simply be dying on us.  Instead return the designed error code for
this: CLIS_COMM 

Fixes	#639



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object on the LRU list, we may not be holding the last reference.

Fixes:	#634

Tip of hat to:	Matt Page for execellent diagnosis & patch.



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actual objhead, to make it painfully obvious, that no dereference is
allowed.

Various strokes with the polishing cloth along the way.



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