summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/include/asm/pgalloc-64.h
diff options
context:
space:
mode:
authorDavid Gibson <david@gibson.dropbear.id.au>2009-11-23 19:31:14 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-11-27 14:24:29 +1100
commitc045256d146800ea1d741a8e9e377dada6b7e195 (patch)
tree4369d1f7c0859a373321c9b3b2d2a101a63282fc /arch/powerpc/include/asm/pgalloc-64.h
parent1e43bee9c70654b4d52472c19e5f0a0cc18b6b36 (diff)
powerpc/mm: Fix bug in pagetable cache cleanup with CONFIG_PPC_SUBPAGE_PROT
Commit a0668cdc154e54bf0c85182e0535eea237d53146 cleans up the handling of kmem_caches for allocating various levels of pagetables. Unfortunately, it conflicts badly with CONFIG_PPC_SUBPAGE_PROT, due to the latter's cleverly hidden technique of adding some extra allocation space to the top level page directory to store the extra information it needs. Since that extra allocation really doesn't fit into the cleaned up page directory allocating scheme, this patch alters CONFIG_PPC_SUBPAGE_PROT to instead allocate its struct subpage_prot_table as part of the mm_context_t. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/pgalloc-64.h')
-rw-r--r--arch/powerpc/include/asm/pgalloc-64.h5
1 files changed, 0 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/pgalloc-64.h b/arch/powerpc/include/asm/pgalloc-64.h
index 5c1cd73dafa..605f5c5398d 100644
--- a/arch/powerpc/include/asm/pgalloc-64.h
+++ b/arch/powerpc/include/asm/pgalloc-64.h
@@ -28,10 +28,6 @@
*/
#define MAX_PGTABLE_INDEX_SIZE 0xf
-#ifndef CONFIG_PPC_SUBPAGE_PROT
-static inline void subpage_prot_free(pgd_t *pgd) {}
-#endif
-
extern struct kmem_cache *pgtable_cache[];
#define PGT_CACHE(shift) (pgtable_cache[(shift)-1])
@@ -42,7 +38,6 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
- subpage_prot_free(pgd);
kmem_cache_free(PGT_CACHE(PGD_INDEX_SIZE), pgd);
}