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[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>
hifive-unleashed-5.1
Uwe Kleine-König 2008-02-27 13:44:59 +01:00 committed by Russell King
parent d862ccc570
commit 0c82d83cb0
1 changed files with 2 additions and 4 deletions
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6
arch/arm/mm/pgd.c
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@ -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: