[PATCH] mm: remove PG_highmem

Remove PG_highmem, to save a page flag.  Use is_highmem() instead.  It'll
generate a little more code, but we don't use PageHigheMem() in many places.

Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

6 files changed, 0 insertions, 6 deletions

diff --git a/arch/frv/mm/init.c b/arch/frv/mm/init.c
index 41958f57c838..79433159b5f0 100644
--- a/arch/frv/mm/init.c
+++ b/arch/frv/mm/init.c
@@ -169,7 +169,6 @@ void __init mem_init(void)
                 struct page *page = &mem_map[pfn];
 
                 ClearPageReserved(page);
-                set_bit(PG_highmem, &page->flags);
                 set_page_count(page, 1);
                 __free_page(page);
                 totalram_pages++;
diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c
index 7a7ea3737265..8766c771bb45 100644
--- a/arch/i386/mm/init.c
+++ b/arch/i386/mm/init.c
@@ -269,7 +269,6 @@ void __init one_highpage_init(struct page *page, int pfn, int bad_ppro)
 {
         if (page_is_ram(pfn) && !(bad_ppro && page_kills_ppro(pfn))) {
                 ClearPageReserved(page);
-                set_bit(PG_highmem, &page->flags);
                 set_page_count(page, 1);
                 __free_page(page);
                 totalhigh_pages++;
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index b027ce7efbc6..73843c528778 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -232,7 +232,6 @@ void __init mem_init(void)
 #ifdef CONFIG_LIMITED_DMA
                 set_page_address(page, lowmem_page_address(page));
 #endif
-                set_bit(PG_highmem, &page->flags);
                 set_page_count(page, 1);
                 __free_page(page);
                 totalhigh_pages++;
diff --git a/arch/ppc/mm/init.c b/arch/ppc/mm/init.c
index 363c157e3617..c8529d004cfa 100644
--- a/arch/ppc/mm/init.c
+++ b/arch/ppc/mm/init.c
@@ -469,7 +469,6 @@ void __init mem_init(void)
                         struct page *page = mem_map + pfn;
 
                         ClearPageReserved(page);
-                        set_bit(PG_highmem, &page->flags);
                         set_page_count(page, 1);
                         __free_page(page);
                         totalhigh_pages++;
diff --git a/arch/sparc/mm/init.c b/arch/sparc/mm/init.c
index a2dea69b2f07..ec2e05028a10 100644
--- a/arch/sparc/mm/init.c
+++ b/arch/sparc/mm/init.c
@@ -384,7 +384,6 @@ void map_high_region(unsigned long start_pfn, unsigned long end_pfn)
                 struct page *page = pfn_to_page(tmp);
 
                 ClearPageReserved(page);
-                set_bit(PG_highmem, &page->flags);
                 set_page_count(page, 1);
                 __free_page(page);
                 totalhigh_pages++;
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index c22825f13e40..5597bd39e6b5 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -53,7 +53,6 @@ static void setup_highmem(unsigned long highmem_start,
         for(i = 0; i < highmem_len >> PAGE_SHIFT; i++){
                 page = &mem_map[highmem_pfn + i];
                 ClearPageReserved(page);
-                set_bit(PG_highmem, &page->flags);
                 set_page_count(page, 1);
                 __free_page(page);
         }