From: Christoph Lameter <clameter@sgi.com>
To: Mel Gorman <mel@csn.ul.ie>
Cc: linux-mm@kvack.org
Subject: Re: [PATCH 2/5] Breakout page_order() to internal.h to avoid special knowledge of the buddy allocator
Date: Thu, 24 May 2007 12:08:44 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.64.0705241207260.30227@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <20070524190546.31911.7469.sendpatchset@skynet.skynet.ie>
On Thu, 24 May 2007, Mel Gorman wrote:
> The statistics patch later needs to know what order a free page is on the
> free lists. Rather than having special knowledge of page_private() when
> PageBuddy() is set, this patch places out page_order() in internal.h and
> adds a VM_BUG_ON to catch using it on non-PageBuddy pages.
Ok but I think in the future we need to have some way to generally handle
pages of higher order be they free or not. Maybe generalize the way we
handle compound pages as done in the large blocksize patchset?
Signed-off-by: Christoph Lameter <clameter@sgi.com>
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next prev parent reply other threads:[~2007-05-24 19:08 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-24 19:05 [PATCH 0/5] Arbitrary grouping and statistics for grouping pages by mobility Mel Gorman
2007-05-24 19:05 ` [PATCH 1/5] Fix calculation in move_freepages_block for counting pages Mel Gorman
2007-05-24 19:07 ` Christoph Lameter
2007-05-24 19:05 ` [PATCH 2/5] Breakout page_order() to internal.h to avoid special knowledge of the buddy allocator Mel Gorman
2007-05-24 19:08 ` Christoph Lameter [this message]
2007-05-25 9:02 ` Mel Gorman
2007-05-24 19:06 ` [PATCH 3/5] Do not depend on MAX_ORDER when grouping pages by mobility Mel Gorman
2007-05-24 19:10 ` Christoph Lameter
2007-05-24 19:06 ` [PATCH 4/5] Print out statistics in relation to fragmentation avoidance to /proc/pagetypeinfo Mel Gorman
2007-05-24 19:11 ` Christoph Lameter
2007-05-24 19:06 ` [PATCH 5/5] Print out PAGE_OWNER statistics in relation to fragmentation avoidance Mel Gorman
2007-05-24 19:11 ` Christoph Lameter
2007-05-25 9:03 ` Mel Gorman
2007-05-25 9:21 [PATCH 0/5] Arbitrary grouping and statistics for grouping pages by mobility Mel Gorman
2007-05-25 9:22 ` [PATCH 2/5] Breakout page_order() to internal.h to avoid special knowledge of the buddy allocator Mel Gorman
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