Merge with /home/shaggy/git/linus-clean/

[karo-tx-linux.git] / include / linux / mmzone.h

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 7e4ae6ab197724f1010544d20ddbddefb49e4dca..93a849f742dbbb47ae5ee00464f328b757d597fe 100644 (file)
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -98,7 +98,7 @@ struct per_cpu_pageset {
 
 /*
  * On machines where it is needed (eg PCs) we divide physical memory
- * into multiple physical zones. On a PC we have 4 zones:
+ * into multiple physical zones. On a 32bit PC we have 4 zones:
  *
  * ZONE_DMA      < 16 MB       ISA DMA capable memory
  * ZONE_DMA32       0 MB       Empty
@@ -149,14 +149,16 @@ struct zone {
        unsigned long           pages_scanned;     /* since last reclaim */
        int                     all_unreclaimable; /* All pages pinned */
 
-       /*
-        * Does the allocator try to reclaim pages from the zone as soon
-        * as it fails a watermark_ok() in __alloc_pages?
-        */
-       int                     reclaim_pages;
        /* A count of how many reclaimers are scanning this zone */
        atomic_t                reclaim_in_progress;
 
+       /*
+        * timestamp (in jiffies) of the last zone reclaim that did not
+        * result in freeing of pages. This is used to avoid repeated scans
+        * if all memory in the zone is in use.
+        */
+       unsigned long           last_unsuccessful_zone_reclaim;
+
        /*
         * prev_priority holds the scanning priority for this zone.  It is
         * defined as the scanning priority at which we achieved our reclaim