Commit 4f817847 authored Oct 16, 2007 by Jeremy Fitzhardinge Committed by Jeremy Fitzhardinge Oct 16, 2007

remove dead code in pgtable_cache_init



The conversion from using a slab cache to quicklist left some residual
dead code.

I note that in the conversion it now always allocates a whole page for
the pgd, rather than the 32 bytes needed for a PAE pgd.  Was this
intended?

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: Andi Kleen <ak@suse.de>
Cc: William Lee Irwin III <wli@holomorphy.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>

parent 8965c1c0

arch/x86/mm/init_32.c

+5 −17

Original line number	Diff line number	Diff line
		@@ -746,24 +746,12 @@ struct kmem_cache *pmd_cache;

		void __init pgtable_cache_init(void)
		{
		size_t pgd_size = PTRS_PER_PGD*sizeof(pgd_t);

		if (PTRS_PER_PMD > 1) {
		if (PTRS_PER_PMD > 1)
		pmd_cache = kmem_cache_create("pmd",
		PTRS_PER_PMD*sizeof(pmd_t),
		PTRS_PER_PMD*sizeof(pmd_t),
		SLAB_PANIC,
		pmd_ctor);
		if (!SHARED_KERNEL_PMD) {
		/* If we're in PAE mode and have a non-shared
		kernel pmd, then the pgd size must be a
		page size. This is because the pgd_list
		links through the page structure, so there
		can only be one pgd per page for this to
		work. */
		pgd_size = PAGE_SIZE;
		}
		}
		}

		/*

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