[PATCH] fix accounting of memory_pressure

[Rik van Riel]

Hi,

the attached patch makes sure to only increase memory_pressure
in cases we actually found a page, this prevents the inactive
target from rising to infinite in case we don't have any
inactive_clean pages in the system...

(observed in testing)

regards,

Rik
--
Executive summary of a recent Microsoft press release:
   "we are concerned about the GNU General Public License (GPL)"

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--- linux-2.4.5-ac17/mm/page_alloc.c.unlazy	Sun Jun 24 19:03:03 2001
+++ linux-2.4.5-ac17/mm/page_alloc.c	Sun Jun 24 19:05:22 2001
@@ -440,7 +440,6 @@
 		 * 	  the inactive clean list. (done by page_launder)
 		 */
 		if (gfp_mask & __GFP_WAIT) {
-			memory_pressure++;
 			try_to_free_pages(gfp_mask);
 			goto try_again;
 		}
--- linux-2.4.5-ac17/mm/vmscan.c.unlazy	Sun Jun 24 19:03:03 2001
+++ linux-2.4.5-ac17/mm/vmscan.c	Sun Jun 24 19:05:36 2001
@@ -397,6 +397,7 @@
 	goto out;

 found_page:
+	memory_pressure++;
 	del_page_from_inactive_clean_list(page);
 	UnlockPage(page);
 	page->age = PAGE_AGE_START;
@@ -406,7 +407,6 @@
 out:
 	spin_unlock(&pagemap_lru_lock);
 	spin_unlock(&pagecache_lock);
-	memory_pressure++;
 	return page;
 }