[ARM] Fix freeing of page tables for ARM in free_pgd_slow

Since 2f569af (CONFIG_HIGHPTE vs. sub-page page tables.) pte_free() calls
pte_lock_deinit() and dec_zone_page_state().  So free_pgd_slow must not call
the latter two when calling the first.

Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mm/pgd.c b/arch/arm/mm/pgd.c
index 500c961..e0f19ab 100644 (file)
--- a/arch/arm/mm/pgd.c
+++ b/arch/arm/mm/pgd.c
@@ -75,7 +75,7 @@ no_pgd:
 void free_pgd_slow(struct mm_struct *mm, pgd_t *pgd)
 {
        pmd_t *pmd;
-       struct page *pte;
+       pgtable_t pte;
 
        if (!pgd)
                return;
@@ -90,10 +90,8 @@ void free_pgd_slow(struct mm_struct *mm, pgd_t *pgd)
                goto free;
        }
 
-       pte = pmd_page(*pmd);
+       pte = pmd_pgtable(*pmd);
        pmd_clear(pmd);
-       dec_zone_page_state(virt_to_page((unsigned long *)pgd), NR_PAGETABLE);
-       pte_lock_deinit(pte);
        pte_free(mm, pte);
        pmd_free(mm, pmd);
 free: