Document liveness requirements for extent_hooks_t structures.
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@ -1792,7 +1792,9 @@ struct extent_hooks_s {
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in favor of less permanent (and often less costly) operations. All
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operations except allocation can be universally opted out of by setting
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the hook pointers to <constant>NULL</constant>, or selectively opted out
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of by returning failure.</para>
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of by returning failure. Note that once the extent hook is set, the
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structure is accessed directly by the associated arenas, so it must
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remain valid for the entire lifetime of the arenas.</para>
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<funcsynopsis><funcprototype>
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<funcdef>typedef void *<function>(extent_alloc_t)</function></funcdef>
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