[RFC PATCH v2, part4 39/39] mm: kill global variable num_physpages

Jiang Liu
2013-03-24T07:36:45Z

Now all references to num_physpages have been removed, so kill it.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Michel Lespinasse <walken@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Jiang Liu <jiang.liu@huawei.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
---
include/linux/mm.h | 1 -
mm/memory.c | 2 --
mm/nommu.c | 2 --
3 files changed, 5 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index c225a4f..a49afbf 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -29,7 +29,6 @@ struct writeback_control;
extern unsigned long max_mapnr;
#endif

-extern unsigned long num_physpages;
extern unsigned long totalram_pages;
extern void * high_memory;
extern int page_cluster;
diff --git a/mm/memory.c b/mm/memory.c
index 705473a..ecc771d 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -82,7 +82,6 @@ EXPORT_SYMBOL(max_mapnr);
EXPORT_SYMBOL(mem_map);
#endif

-unsigned long num_physpages;
/*
* A number of key systems in x86 including ioremap() rely on the assumption
* that high_memory defines the upper bound on direct map memory, then end
@@ -92,7 +91,6 @@ unsigned long num_physpages;
*/
void * high_memory;

-EXPORT_SYMBOL(num_physpages);
EXPORT_SYMBOL(high_memory);

/*
diff --git a/mm/nommu.c b/mm/nommu.c
index 4eb25a8..ac23388 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -55,7 +55,6 @@
void *high_memory;
struct page *mem_map;
unsigned long max_mapnr;
-unsigned long num_physpages;
unsigned long highest_memmap_pfn;
struct percpu_counter vm_committed_as;
int sysctl_overcommit_memory = OVERCOMMIT_GUESS; /* heuristic overcommit */
@@ -82,7 +81,6 @@ unsigned long vm_memory_committed(void)
EXPORT_SYMBOL_GPL(vm_memory_committed);

EXPORT_SYMBOL(mem_map);
-EXPORT_SYMBOL(num_physpages);

/* list of mapped, potentially shareable regions */
static struct kmem_cache *vm_region_jar;
--
1.7.9.5