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x86, mm: Use new pagetable helpers in try_preserve_large_page()
try_preserve_large_page() can be slightly simplified by using the new page_level_*() helpers. This also moves the 'level' over to the new pg_level enum type. Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/20130122212432.14F3D993@kernel.stglabs.ibm.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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1 changed files with 4 additions and 7 deletions
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@ -396,7 +396,7 @@ try_preserve_large_page(pte_t *kpte, unsigned long address,
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pte_t new_pte, old_pte, *tmp;
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pgprot_t old_prot, new_prot, req_prot;
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int i, do_split = 1;
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unsigned int level;
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enum pg_level level;
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if (cpa->force_split)
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return 1;
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@ -412,15 +412,12 @@ try_preserve_large_page(pte_t *kpte, unsigned long address,
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switch (level) {
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case PG_LEVEL_2M:
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psize = PMD_PAGE_SIZE;
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pmask = PMD_PAGE_MASK;
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break;
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#ifdef CONFIG_X86_64
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case PG_LEVEL_1G:
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psize = PUD_PAGE_SIZE;
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pmask = PUD_PAGE_MASK;
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break;
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#endif
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psize = page_level_size(level);
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pmask = page_level_mask(level);
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break;
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default:
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do_split = -EINVAL;
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goto out_unlock;
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