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SubjectRe: [patch] arca-vm-28 - new nr_freeable_pages
On Thu, 21 Jan 1999, Andrea Arcangeli wrote:

> ftp://e-mind.com/pub/linux/kernel-patches/2.2.0-pre8testing-arca-VM-28.gz

Woops I forgot to diff pagemap.h in arca-vm-28, excuse me. At least
arca-tree-109 was fine ;).

Index: linux/include/linux/pagemap.h
diff -u linux/include/linux/pagemap.h:1.1.1.1 linux/include/linux/pagemap.h:1.1.2.4
--- linux/include/linux/pagemap.h:1.1.1.1 Mon Jan 18 02:27:10 1999
+++ linux/include/linux/pagemap.h Fri Jan 22 10:12:47 1999
@@ -11,17 +11,16 @@

#include <linux/mm.h>
#include <linux/fs.h>
+#include <linux/swap.h>

static inline unsigned long page_address(struct page * page)
{
- return PAGE_OFFSET + PAGE_SIZE * page->map_nr;
+ return PAGE_OFFSET + (page->map_nr << PAGE_SHIFT);
}

-#define PAGE_HASH_BITS 11
+#define PAGE_HASH_BITS 13
#define PAGE_HASH_SIZE (1 << PAGE_HASH_BITS)

-#define PAGE_AGE_VALUE 16
-
extern unsigned long page_cache_size; /* # of pages currently in the hash table */
extern struct page * page_hash_table[PAGE_HASH_SIZE];

@@ -58,7 +57,7 @@
break;
}
/* Found the page. */
- atomic_inc(&page->count);
+ page_get(page);
set_bit(PG_referenced, &page->flags);
not_found:
return page;
@@ -78,6 +77,7 @@
page->pprev_hash = NULL;
}
page_cache_size--;
+ page_put(page);
}

static inline void __add_page_to_hash_queue(struct page * page, struct page **p)

Andrea Arcangeli


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