Revert "Bound allocated pages to resource pools with page caches to avoid unnecessary syscalls"

This reverts commit 7f0e59820899c30a243c18556ce2e3fb72d6d221.

1 files changed, 0 insertions, 58 deletions

diff --git a/lib/resource.c b/lib/resource.c
index 0ad886d9..4c4b92ec 100644
--- a/lib/resource.c
+++ b/lib/resource.c
@@ -31,18 +31,9 @@
 struct pool {
   resource r;
   list inside;
-  struct pool_pages *pages;
   const char *name;
 };
 
-struct pool_pages {
-  uint free;
-  uint used;
-  void *ptr[0];
-};
-
-#define POOL_PAGES_MAX	((page_size - sizeof(struct pool_pages)) / sizeof (void *))
-
 static void pool_dump(resource *);
 static void pool_free(resource *);
 static resource *pool_lookup(resource *, unsigned long);
@@ -59,10 +50,6 @@ static struct resclass pool_class = {
 
 pool root_pool;
 
-void *alloc_sys_page(void);
-void free_sys_page(void *);
-void resource_sys_init(void);
-
 static int indent;
 
 /**
@@ -95,14 +82,6 @@ pool_free(resource *P)
       xfree(r);
       r = rr;
     }
-
-  if (p->pages)
-    {
-      ASSERT_DIE(!p->pages->used);
-      for (uint i=0; i<p->pages->free; i++)
-	free_sys_page(p->pages->ptr[i]);
-      free_sys_page(p->pages);
-    }
 }
 
 static void
@@ -128,9 +107,6 @@ pool_memsize(resource *P)
   WALK_LIST(r, p->inside)
     sum += rmemsize(r);
 
-  if (p->pages)
-    sum += page_size * (p->pages->used + p->pages->free + 1);
-
   return sum;
 }
 
@@ -283,7 +259,6 @@ rlookup(unsigned long a)
 void
 resource_init(void)
 {
-  resource_sys_init();
   root_pool.r.class = &pool_class;
   root_pool.name = "Root";
   init_list(&root_pool.inside);
@@ -450,39 +425,6 @@ mb_free(void *m)
   rfree(b);
 }
 
-void *
-alloc_page(pool *p)
-{
-  if (!p->pages)
-  {
-    p->pages = alloc_sys_page();
-    p->pages->free = 0;
-    p->pages->used = 1;
-  }
-  else
-    p->pages->used++;
-
-  if (p->pages->free)
-  {
-    void *ptr = p->pages->ptr[--p->pages->free];
-    bzero(ptr, page_size);
-    return ptr;
-  }
-  else
-    return alloc_sys_page();
-}
-
-void
-free_page(pool *p, void *ptr)
-{
-  ASSERT_DIE(p->pages);
-  p->pages->used--;
-
-  if (p->pages->free >= POOL_PAGES_MAX)
-    return free_sys_page(ptr);
-  else
-    p->pages->ptr[p->pages->free++] = ptr;
-}
 
 
 #define STEP_UP(x) ((x) + (x)/2 + 4)