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Diffstat (limited to 'arch/sparc/mm/tsb.c')
-rw-r--r--arch/sparc/mm/tsb.c18
1 files changed, 12 insertions, 6 deletions
diff --git a/arch/sparc/mm/tsb.c b/arch/sparc/mm/tsb.c
index 6725ed45580e..f2b77112e9d8 100644
--- a/arch/sparc/mm/tsb.c
+++ b/arch/sparc/mm/tsb.c
@@ -469,8 +469,10 @@ retry_tsb_alloc:
int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
{
+ unsigned long mm_rss = get_mm_rss(mm);
#if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE)
- unsigned long total_huge_pte_count;
+ unsigned long saved_hugetlb_pte_count;
+ unsigned long saved_thp_pte_count;
#endif
unsigned int i;
@@ -483,10 +485,12 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
* will re-increment the counters as the parent PTEs are
* copied into the child address space.
*/
- total_huge_pte_count = mm->context.hugetlb_pte_count +
- mm->context.thp_pte_count;
+ saved_hugetlb_pte_count = mm->context.hugetlb_pte_count;
+ saved_thp_pte_count = mm->context.thp_pte_count;
mm->context.hugetlb_pte_count = 0;
mm->context.thp_pte_count = 0;
+
+ mm_rss -= saved_thp_pte_count * (HPAGE_SIZE / PAGE_SIZE);
#endif
/* copy_mm() copies over the parent's mm_struct before calling
@@ -499,11 +503,13 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
/* If this is fork, inherit the parent's TSB size. We would
* grow it to that size on the first page fault anyways.
*/
- tsb_grow(mm, MM_TSB_BASE, get_mm_rss(mm));
+ tsb_grow(mm, MM_TSB_BASE, mm_rss);
#if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE)
- if (unlikely(total_huge_pte_count))
- tsb_grow(mm, MM_TSB_HUGE, total_huge_pte_count);
+ if (unlikely(saved_hugetlb_pte_count + saved_thp_pte_count))
+ tsb_grow(mm, MM_TSB_HUGE,
+ (saved_hugetlb_pte_count + saved_thp_pte_count) *
+ REAL_HPAGE_PER_HPAGE);
#endif
if (unlikely(!mm->context.tsb_block[MM_TSB_BASE].tsb))