[PATCH 2/2] mm, x86: fix pmd accounting for PAE

[Kirill A. Shutemov]

Add missed mm->nr_pmds decrement on cleanup prepopulated PMDs.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Reported-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
---
 arch/x86/mm/pgtable.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index a7d36de0bd30..7b22adaad4f1 100644
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -249,6 +249,7 @@ static void pgd_mop_up_pmds(struct mm_struct *mm, pgd_t *pgdp)
 
 			paravirt_release_pmd(pgd_val(pgd) >> PAGE_SHIFT);
 			pmd_free(mm, pmd);
+			mm_dec_nr_pmds(mm);
 		}
 	}
 }
-- 
 Kirill A. Shutemov
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