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authorAndi Kleen <ak@suse.de>2005-11-05 17:25:53 +0100
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-14 19:55:14 -0800
commit07808b74e7dab1aa385e698795875337d72daf7d (patch)
tree3b593c31e6e58364f4001105bfeebefa94708209
parent1dff7f3db5f045ccbfeca5bb00b0958a78501557 (diff)
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[PATCH] x86_64: Remove obsolete ARCH_HAS_ATOMIC_UNSIGNED and page_flags_t
Has been introduced for x86-64 at some point to save memory in struct page, but has been obsolete for some time. Just remove it. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--include/linux/mm.h10
-rw-r--r--include/linux/mmzone.h2
-rw-r--r--mm/filemap.c2
-rw-r--r--mm/page_alloc.c2
4 files changed, 5 insertions, 11 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 5c1fb0a2e80..23fad4dae23 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -206,12 +206,6 @@ struct vm_operations_struct {
struct mmu_gather;
struct inode;
-#ifdef ARCH_HAS_ATOMIC_UNSIGNED
-typedef unsigned page_flags_t;
-#else
-typedef unsigned long page_flags_t;
-#endif
-
/*
* Each physical page in the system has a struct page associated with
* it to keep track of whatever it is we are using the page for at the
@@ -219,7 +213,7 @@ typedef unsigned long page_flags_t;
* a page.
*/
struct page {
- page_flags_t flags; /* Atomic flags, some possibly
+ unsigned long flags; /* Atomic flags, some possibly
* updated asynchronously */
atomic_t _count; /* Usage count, see below. */
atomic_t _mapcount; /* Count of ptes mapped in mms,
@@ -435,7 +429,7 @@ static inline void put_page(struct page *page)
#endif
/* Page flags: | [SECTION] | [NODE] | ZONE | ... | FLAGS | */
-#define SECTIONS_PGOFF ((sizeof(page_flags_t)*8) - SECTIONS_WIDTH)
+#define SECTIONS_PGOFF ((sizeof(unsigned long)*8) - SECTIONS_WIDTH)
#define NODES_PGOFF (SECTIONS_PGOFF - NODES_WIDTH)
#define ZONES_PGOFF (NODES_PGOFF - ZONES_WIDTH)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index da7a829f856..57fc99c67c3 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -455,7 +455,7 @@ extern struct pglist_data contig_page_data;
#include <asm/sparsemem.h>
#endif
-#if BITS_PER_LONG == 32 || defined(ARCH_HAS_ATOMIC_UNSIGNED)
+#if BITS_PER_LONG == 32
/*
* with 32 bit page->flags field, we reserve 9 bits for node/zone info.
* there are 4 zones (3 bits) and this leaves 9-3=6 bits for nodes.
diff --git a/mm/filemap.c b/mm/filemap.c
index 5d6e4c2000d..33a28bfde15 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -134,7 +134,7 @@ static int sync_page(void *word)
struct address_space *mapping;
struct page *page;
- page = container_of((page_flags_t *)word, struct page, flags);
+ page = container_of((unsigned long *)word, struct page, flags);
/*
* page_mapping() is being called without PG_locked held.
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e8810a7e026..259a71bacca 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -128,7 +128,7 @@ static void bad_page(const char *function, struct page *page)
printk(KERN_EMERG "Bad page state at %s (in process '%s', page %p)\n",
function, current->comm, page);
printk(KERN_EMERG "flags:0x%0*lx mapping:%p mapcount:%d count:%d\n",
- (int)(2*sizeof(page_flags_t)), (unsigned long)page->flags,
+ (int)(2*sizeof(unsigned long)), (unsigned long)page->flags,
page->mapping, page_mapcount(page), page_count(page));
printk(KERN_EMERG "Backtrace:\n");
dump_stack();