--- mm/page_alloc.c.orig Fri May 12 20:13:08 2000
+++ mm/page_alloc.c Mon May 15 11:00:17 2000
@@ -216,6 +216,7 @@
struct page * __alloc_pages(zonelist_t *zonelist, unsigned long order)
{
zone_t **zone = zonelist->zones;
+ static atomic_t free_before_allocate = ATOMIC_INIT(0);
extern wait_queue_head_t kswapd_wait;
/*
@@ -243,6 +244,9 @@
if (page)
return page;
}
+ /* Somebody else is freeing pages? */
+ if (atomic_read(&free_before_allocate))
+ try_to_free_pages(zonelist->gfp_mask);
}
/*
@@ -270,10 +274,12 @@
*/
if (!(current->flags & PF_MEMALLOC)) {
int gfp_mask = zonelist->gfp_mask;
+ atomic_inc(&free_before_allocate);
if (!try_to_free_pages(gfp_mask)) {
if (!(gfp_mask & __GFP_HIGH))
goto fail;
}
+ atomic_dec(&free_before_allocate);
}
/*