From: Lai Jiangshan <laijs@cn.fujitsu.com>
Date: Wed, 2 Nov 2011 15:31:14 +0000 (-0400)
Subject: rculfhash: Change lazy shrink strategy
X-Git-Tag: v0.7.0~43^2~61
X-Git-Url: http://git.lttng.org./?a=commitdiff_plain;ds=sidebyside;h=89bb121d8cea974a8b6927499d917620236b7fee;hp=89bb121d8cea974a8b6927499d917620236b7fee;p=userspace-rcu.git

rculfhash: Change lazy shrink strategy

We can aggressively grow a ht,
but we should conservatively shrink a ht.

When we try to shrink the ht after a deletion,
but if a growing is required after it, we should
stop this shrink.

But it is more complicated to implement it, so we use more
conservative strategy to shrink a ht to gain simple code:

We stop to (lazy) shrink when we found growing is
in progress.

[ Edit by Mathieu Desnoyers: Add documentation, cleanup. ]

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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