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Subject[GIT PULL] s390 patches for 3.3-rc5
Hi Linus,

please pull from 'for-linus' branch of

git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git for-linus

to receive the following updates:

Danny Kukawka (1):
[S390] crash_dump: remove duplicate include

David Howells (1):
[S390] KEYS: Enable the compat keyctl wrapper on s390x

Gerald Schaefer (1):
[S390] memory hotplug: prevent memory zone interleave

arch/s390/Kconfig | 3 +++
arch/s390/kernel/crash_dump.c | 1 -
arch/s390/mm/init.c | 30 ++++++++++++++++++++++++++----
3 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index d172758..6d99a5f 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -227,6 +227,9 @@ config COMPAT
config SYSVIPC_COMPAT
def_bool y if COMPAT && SYSVIPC

+config KEYS_COMPAT
+ def_bool y if COMPAT && KEYS
+
config AUDIT_ARCH
def_bool y

diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c
index 39f8fd4..c383ce4 100644
--- a/arch/s390/kernel/crash_dump.c
+++ b/arch/s390/kernel/crash_dump.c
@@ -11,7 +11,6 @@
#include <linux/module.h>
#include <linux/gfp.h>
#include <linux/slab.h>
-#include <linux/crash_dump.h>
#include <linux/bootmem.h>
#include <linux/elf.h>
#include <asm/ipl.h>
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index 5d63301..5023661 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -223,16 +223,38 @@ void free_initrd_mem(unsigned long start, unsigned long end)
#ifdef CONFIG_MEMORY_HOTPLUG
int arch_add_memory(int nid, u64 start, u64 size)
{
- struct pglist_data *pgdat;
+ unsigned long zone_start_pfn, zone_end_pfn, nr_pages;
+ unsigned long start_pfn = PFN_DOWN(start);
+ unsigned long size_pages = PFN_DOWN(size);
struct zone *zone;
int rc;

- pgdat = NODE_DATA(nid);
- zone = pgdat->node_zones + ZONE_MOVABLE;
rc = vmem_add_mapping(start, size);
if (rc)
return rc;
- rc = __add_pages(nid, zone, PFN_DOWN(start), PFN_DOWN(size));
+ for_each_zone(zone) {
+ if (zone_idx(zone) != ZONE_MOVABLE) {
+ /* Add range within existing zone limits */
+ zone_start_pfn = zone->zone_start_pfn;
+ zone_end_pfn = zone->zone_start_pfn +
+ zone->spanned_pages;
+ } else {
+ /* Add remaining range to ZONE_MOVABLE */
+ zone_start_pfn = start_pfn;
+ zone_end_pfn = start_pfn + size_pages;
+ }
+ if (start_pfn < zone_start_pfn || start_pfn >= zone_end_pfn)
+ continue;
+ nr_pages = (start_pfn + size_pages > zone_end_pfn) ?
+ zone_end_pfn - start_pfn : size_pages;
+ rc = __add_pages(nid, zone, start_pfn, nr_pages);
+ if (rc)
+ break;
+ start_pfn += nr_pages;
+ size_pages -= nr_pages;
+ if (!size_pages)
+ break;
+ }
if (rc)
vmem_remove_mapping(start, size);
return rc;


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