Re: [PATCH] PageCompound avoid page[1].mapping

From: Nick Piggin
Date: Mon Dec 12 2005 - 05:46:46 EST


William Lee Irwin III wrote:
On Fri, Dec 09, 2005 at 09:56:42PM +0000, Hugh Dickins wrote:

- page[1].mapping = (void *)free_huge_page;
+ page[1].index = (unsigned long)free_huge_page; /* set dtor */
for (i = 0; i < (HPAGE_SIZE/PAGE_SIZE); ++i)
clear_highpage(&page[i]);
return page;


Hmm, ->lru would be nicer. What prompted the use of ->index?


Yes, agreed. That would rid you of __page_count() too.

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