From 8dfcc9ba27e2ed257e5de9539f7f03e57c2c0e33 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Wed, 22 Mar 2006 00:08:05 -0800 Subject: [PATCH] mm: split highorder pages Have an explicit mm call to split higher order pages into individual pages. Should help to avoid bugs and be more explicit about the code's intention. Signed-off-by: Nick Piggin Cc: Russell King Cc: David Howells Cc: Ralf Baechle Cc: Benjamin Herrenschmidt Cc: Paul Mundt Cc: "David S. Miller" Cc: Chris Zankel Signed-off-by: Yoichi Yuasa Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/xtensa/mm/pgtable.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) (limited to 'arch/xtensa') diff --git a/arch/xtensa/mm/pgtable.c b/arch/xtensa/mm/pgtable.c index cbc56aedf13e..7d28914d11cb 100644 --- a/arch/xtensa/mm/pgtable.c +++ b/arch/xtensa/mm/pgtable.c @@ -21,13 +21,9 @@ pte_t* pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address) p = (pte_t*) __get_free_pages(GFP_KERNEL|__GFP_REPEAT, COLOR_ORDER); if (likely(p)) { - struct page *page; + split_page(virt_to_page(p), COLOR_ORDER); for (i = 0; i < COLOR_SIZE; i++) { - page = virt_to_page(p); - - set_page_count(page, 1); - if (ADDR_COLOR(p) == color) pte = p; else @@ -55,9 +51,9 @@ struct page* pte_alloc_one(struct mm_struct *mm, unsigned long address) p = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER); if (likely(p)) { - for (i = 0; i < PAGE_ORDER; i++) { - set_page_count(p, 1); + split_page(p, COLOR_ORDER); + for (i = 0; i < PAGE_ORDER; i++) { if (PADDR_COLOR(page_address(p)) == color) page = p; else -- cgit v1.2.3