The patch titled
No GFP_DMA check in the slab if no CONFIG_ZONE_DMA is set
has been added to the -mm tree. Its filename is
optional-zone_dma-in-the-vm-no-gfp_dma-check-in-the-slab-if-no-config_zone_dma-is-set.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: No GFP_DMA check in the slab if no CONFIG_ZONE_DMA is set
From: Christoph Lameter <clameter@xxxxxxx>
The GFP_DMA check in the slab is not necessary if there is no ZONE_DMA
available.
The SCSI layer still sets GFP_DMA just in case which may cause the
BUG_ON to fire although there cannot be a an issue since systems with
CONFIG_ZONE_DMA off have no DMA restrictions.
This bug was triggered by Paul Jackson on an SGI Altix system. Altix never
had any memory below 4G (meaning of ZONE_DMA on ia64) and the driver has
been working for ages.
Signed-off-by: Christoph Lameter <clameter@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/slab.c | 2 ++
1 files changed, 2 insertions(+)
diff -puN mm/slab.c~optional-zone_dma-in-the-vm-no-gfp_dma-check-in-the-slab-if-no-config_zone_dma-is-set mm/slab.c
--- a/mm/slab.c~optional-zone_dma-in-the-vm-no-gfp_dma-check-in-the-slab-if-no-config_zone_dma-is-set
+++ a/mm/slab.c
@@ -2621,10 +2621,12 @@ static void cache_init_objs(struct kmem_
static void kmem_flagcheck(struct kmem_cache *cachep, gfp_t flags)
{
+#ifdef CONFIG_ZONE_DMA
if (flags & SLAB_DMA)
BUG_ON(!(cachep->gfpflags & GFP_DMA));
else
BUG_ON(cachep->gfpflags & GFP_DMA);
+#endif
}
static void *slab_get_obj(struct kmem_cache *cachep, struct slab *slabp,
_
Patches currently in -mm which might be from clameter@xxxxxxx are
memory-page-alloc-minor-cleanups.patch
memory-page-alloc-minor-cleanups-fix.patch
get-rid-of-zone_table.patch
deal-with-cases-of-zone_dma-meaning-the-first-zone.patch
get-rid-of-zone_table-fix-3.patch
introduce-config_zone_dma.patch
optional-zone_dma-in-the-vm.patch
optional-zone_dma-in-the-vm-no-gfp_dma-check-in-the-slab-if-no-config_zone_dma-is-set.patch
optional-zone_dma-for-ia64.patch
remove-zone_dma-remains-from-parisc.patch
remove-zone_dma-remains-from-sh-sh64.patch
set-config_zone_dma-for-arches-with-generic_isa_dma.patch
zoneid-fix-up-calculations-for-zoneid_pgshift.patch
radix-tree-rcu-lockless-readside.patch
zvc-support-nr_slab_reclaimable--nr_slab_unreclaimable-swap_prefetch.patch
reduce-max_nr_zones-swap_prefetch-remove-incorrect-use-of-zone_highmem.patch
numa-add-zone_to_nid-function-swap_prefetch.patch
readahead-state-based-method-aging-accounting.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
