From: Adam Litke <agl@us.ibm.com>
To: Dave McCracken <dave.mccracken@oracle.com>
Cc: linux-mm@kvack.org, libhugetlbfs-devel@lists.sourceforge.net,
Andy Whitcroft <apw@shadowen.org>, Mel Gorman <mel@skynet.ie>,
Bill Irwin <bill.irwin@oracle.com>, Ken Chen <kenchen@google.com>
Subject: Re: [PATCH 4/5] hugetlb: Try to grow hugetlb pool for MAP_SHARED mappings
Date: Fri, 14 Sep 2007 09:03:46 -0500 [thread overview]
Message-ID: <1189778626.15024.48.camel@localhost.localdomain> (raw)
In-Reply-To: <200709131724.48818.dave.mccracken@oracle.com>
On Thu, 2007-09-13 at 17:24 -0500, Dave McCracken wrote:
> On Thursday 13 September 2007, Adam Litke wrote:
> > +static int gather_surplus_pages(int delta)
> > +{
> > + struct list_head surplus_list;
> > + struct page *page, *tmp;
> > + int ret, i;
> > + int needed, allocated;
> > +
> > + needed = (resv_huge_pages + delta) - free_huge_pages;
> > + if (!needed)
> > + return 0;
>
> It looks here like needed can be less than zero. Do we really intend to
> continue with the function if that's true? Or should that test really be "if
> (needed <= 0)"?
You are right about that. Thanks for the review :)
--
Adam Litke - (agl at us.ibm.com)
IBM Linux Technology Center
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next prev parent reply other threads:[~2007-09-14 12:56 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-13 17:58 [PATCH 0/5] [hugetlb] Dynamic huge page pool resizing Adam Litke
2007-09-13 17:59 ` [PATCH 1/5] hugetlb: Account for hugepages as locked_vm Adam Litke
2007-09-14 5:41 ` Ken Chen
2007-09-14 9:15 ` Mel Gorman
2007-09-13 17:59 ` [PATCH 2/5] hugetlb: Move update_and_free_page Adam Litke
2007-09-13 17:59 ` [PATCH 3/5] hugetlb: Try to grow hugetlb pool for MAP_PRIVATE mappings Adam Litke
2007-09-13 18:06 ` [Libhugetlbfs-devel] " Dave Hansen
2007-09-13 20:21 ` Adam Litke
2007-09-14 5:46 ` David Gibson
2007-09-14 13:33 ` Adam Litke
2007-09-13 17:59 ` [PATCH 4/5] hugetlb: Try to grow hugetlb pool for MAP_SHARED mappings Adam Litke
2007-09-13 22:24 ` Dave McCracken
2007-09-14 14:03 ` Adam Litke [this message]
2007-09-13 17:59 ` [PATCH 5/5] hugetlb: Add hugetlb_dynamic_pool sysctl Adam Litke
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