From: David Miller <davem@davemloft.net>
To: akpm@linux-foundation.org
Cc: linux-kernel@vger.kernel.org
Subject: that page count overflow thing
Date: Sat, 19 May 2007 15:26:49 -0700 (PDT) [thread overview]
Message-ID: <20070519.152649.102577495.davem@davemloft.net> (raw)
I think we may be able to fix that one without making the
counter larger, it's silly overhead for such an extreme
case IMHO.
Perhaps it might be possible to just make the counter stick at it's
maximum, and when it's there we have an rbtree of external "large"
counters, keyed by page struct address.
So basically externalize counters that go over the maximally
representable value. In this way only the idiotic cases pay
the price.
next reply other threads:[~2007-05-19 22:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-19 22:26 David Miller [this message]
2007-05-21 11:37 ` that page count overflow thing William Lee Irwin III
2007-05-21 11:50 ` David Miller
2007-05-21 12:16 ` William Lee Irwin III
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