From 0c82d83cb09a1c9fd4d24d32064ce827709c104b Mon Sep 17 00:00:00 2001
From: =?utf8?q?Uwe=20Kleine-K=C3=B6nig?= <Uwe.Kleine-Koenig@digi.com>
Date: Wed, 27 Feb 2008 13:44:59 +0100
Subject: [PATCH] [ARM] Fix freeing of page tables for ARM in free_pgd_slow
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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>
---
arch/arm/mm/pgd.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mm/pgd.c b/arch/arm/mm/pgd.c
index 500c9610ab3..e0f19ab9116 100644
--- 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:
--
2.20.1