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>
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 730a5b1..aa4708f 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -746,24 +746,12 @@
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;
- }
- }
+ PTRS_PER_PMD*sizeof(pmd_t),
+ PTRS_PER_PMD*sizeof(pmd_t),
+ SLAB_PANIC,
+ pmd_ctor);
}
/*