Subject: + mm-pgtable-dont-accumulate-addr-during-pgd-prepopulate-pmd.patch added to -mm tree
To: liwanp@xxxxxxxxxxxxxxxxxx,mhocko@xxxxxxx,zhangyanfei@xxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Tue, 25 Jun 2013 15:23:51 -0700
The patch titled
Subject: mm/pgtable: don't accumulate addr during pgd prepopulate pmd
has been added to the -mm tree. Its filename is
mm-pgtable-dont-accumulate-addr-during-pgd-prepopulate-pmd.patch
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------------------------------------------------------
From: Wanpeng Li <liwanp@xxxxxxxxxxxxxxxxxx>
Subject: mm/pgtable: don't accumulate addr during pgd prepopulate pmd
The old codes accumulate addr to get right pmd, however, currently pmds
are preallocated and transfered as a parameter, there is unnecessary to
accumulate addr variable any more, this patch remove it.
Signed-off-by: Wanpeng Li <liwanp@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Michal Hocko <mhocko@xxxxxxx>
Reviewed-by: Zhang Yanfei <zhangyanfei@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/mm/pgtable.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff -puN arch/x86/mm/pgtable.c~mm-pgtable-dont-accumulate-addr-during-pgd-prepopulate-pmd arch/x86/mm/pgtable.c
--- a/arch/x86/mm/pgtable.c~mm-pgtable-dont-accumulate-addr-during-pgd-prepopulate-pmd
+++ a/arch/x86/mm/pgtable.c
@@ -240,7 +240,6 @@ static void pgd_mop_up_pmds(struct mm_st
static void pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmds[])
{
pud_t *pud;
- unsigned long addr;
int i;
if (PREALLOCATED_PMDS == 0) /* Work around gcc-3.4.x bug */
@@ -248,8 +247,7 @@ static void pgd_prepopulate_pmd(struct m
pud = pud_offset(pgd, 0);
- for (addr = i = 0; i < PREALLOCATED_PMDS;
- i++, pud++, addr += PUD_SIZE) {
+ for (i = 0; i < PREALLOCATED_PMDS; i++, pud++) {
pmd_t *pmd = pmds[i];
if (i >= KERNEL_PGD_BOUNDARY)
_
Patches currently in -mm which might be from liwanp@xxxxxxxxxxxxxxxxxx are
mm-memory-hotplug-fix-lowmem-count-overflow-when-offline-pages.patch
mm-memory-hotplug-fix-lowmem-count-overflow-when-offline-pages-fix.patch
mm-pageblock-remove-get-set_pageblock_flags.patch
mm-hugetlb-remove-hugetlb_prefault.patch
mm-hugetlb-use-already-exist-interface-huge_page_shift.patch
mm-writeback-remove-wb_reason_name.patch
mm-writeback-dont-check-force_wait-to-handle-bdi-work_list.patch
mm-writeback-commit-reason-of-wb_reason_forker_thread-mismatch-name.patch
mm-page_alloc-fix-doc-for-numa_zonelist_order.patch
mm-thp-fix-doc-for-transparent-huge-zero-page.patch
mm-pgtable-dont-accumulate-addr-during-pgd-prepopulate-pmd.patch
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