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[IA64] Untangle sync_icache_dcache() page size determination

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Untangle the chaos of page size determination in this function by
simply using PAGE_SIZE << compound_order().

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Christoph Lameter 2008-04-09 13:05:41 -07:00 committed by Tony Luck
parent 5cf1f7cef1
commit 273988fa4d
1 changed files with 1 additions and 7 deletions
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8
arch/ia64/mm/init.c
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@ -58,7 +58,6 @@ __ia64_sync_icache_dcache (pte_t pte)
{ {
unsigned long addr; unsigned long addr;
struct page *page; struct page *page;
unsigned long order;
page = pte_page(pte); page = pte_page(pte);
addr = (unsigned long) page_address(page); addr = (unsigned long) page_address(page);
@ -66,12 +65,7 @@ __ia64_sync_icache_dcache (pte_t pte)
if (test_bit(PG_arch_1, &page->flags)) if (test_bit(PG_arch_1, &page->flags))
return; /* i-cache is already coherent with d-cache */ return; /* i-cache is already coherent with d-cache */
if (PageCompound(page)) { flush_icache_range(addr, addr + (PAGE_SIZE << compound_order(page)));
order = compound_order(page);
flush_icache_range(addr, addr + (1UL << order << PAGE_SHIFT));
}
else
flush_icache_range(addr, addr + PAGE_SIZE);
set_bit(PG_arch_1, &page->flags); /* mark page as clean */ set_bit(PG_arch_1, &page->flags); /* mark page as clean */
} }