From: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
To: linux-mm@kvack.org
Cc: 'David Gibson' <david@gibson.dropbear.id.au>, akpm@osdl.org
Subject: [patch] don't allow free hugetlb count fall below reserved count
Date: Thu, 30 Mar 2006 16:14:34 -0800 [thread overview]
Message-ID: <200603310013.k2V0Dng26534@unix-os.sc.intel.com> (raw)
With strict page reservation, I think kernel should enforce number of
free hugetlb page don't fall below reserved count. Currently it is
possible in the sysctl path. Add proper check in sysctl to disallow
that.
Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
--- ./mm/hugetlb.c.orig 2006-03-30 15:32:20.000000000 -0800
+++ ./mm/hugetlb.c 2006-03-30 15:48:22.000000000 -0800
@@ -334,6 +334,7 @@
return nr_huge_pages;
spin_lock(&hugetlb_lock);
+ count = max(count, reserved_huge_pages);
try_to_free_low(count);
while (count < nr_huge_pages) {
struct page *page = dequeue_huge_page(NULL, 0);
--
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next reply other threads:[~2006-03-31 0:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-31 0:14 Chen, Kenneth W [this message]
2006-03-31 0:41 ` 'David Gibson'
2006-03-31 1:20 ` Chen, Kenneth W
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