Pull acpi-produce-consume into release branch

[linux-2.6-omap-h63xx.git] / mm / page_alloc.c

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 14d7032c1d120b12ee1d9c9c6d1d8cadfb8b1edf..e1d3d77f4aeef89259d9e3b09e500042a42d7a87 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -22,6 +22,7 @@
 #include <linux/pagemap.h>
 #include <linux/bootmem.h>
 #include <linux/compiler.h>
+#include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/suspend.h>
 #include <linux/pagevec.h>
@@ -117,7 +118,7 @@ static void bad_page(const char *function, struct page *page)
        set_page_count(page, 0);
        reset_page_mapcount(page);
        page->mapping = NULL;
-       tainted |= TAINT_BAD_PAGE;
+       add_taint(TAINT_BAD_PAGE);
 }
 
 #ifndef CONFIG_HUGETLB_PAGE
@@ -335,7 +336,7 @@ static inline void free_pages_check(const char *function, struct page *page)
 /*
  * Frees a list of pages. 
  * Assumes all pages on list are in same zone, and of same order.
- * count is the number of pages to free, or 0 for all on the list.
+ * count is the number of pages to free.
  *
  * If the zone was previously in an "all pages pinned" state then look to
  * see if this freeing clears that state.
@@ -670,7 +671,7 @@ void fastcall free_cold_page(struct page *page)
        free_hot_cold_page(page, 1);
 }
 
-static inline void prep_zero_page(struct page *page, int order, unsigned int __nocast gfp_flags)
+static inline void prep_zero_page(struct page *page, int order, gfp_t gfp_flags)
 {
        int i;
 
@@ -685,7 +686,7 @@ static inline void prep_zero_page(struct page *page, int order, unsigned int __n
  * or two.
  */
 static struct page *
-buffered_rmqueue(struct zone *zone, int order, unsigned int __nocast gfp_flags)
+buffered_rmqueue(struct zone *zone, int order, gfp_t gfp_flags)
 {
        unsigned long flags;
        struct page *page = NULL;
@@ -760,7 +761,7 @@ int zone_watermark_ok(struct zone *z, int order, unsigned long mark,
 }
 
 static inline int
-should_reclaim_zone(struct zone *z, unsigned int gfp_mask)
+should_reclaim_zone(struct zone *z, gfp_t gfp_mask)
 {
        if (!z->reclaim_pages)
                return 0;
@@ -773,7 +774,7 @@ should_reclaim_zone(struct zone *z, unsigned int gfp_mask)
  * This is the 'heart' of the zoned buddy allocator.
  */
 struct page * fastcall
-__alloc_pages(unsigned int __nocast gfp_mask, unsigned int order,
+__alloc_pages(gfp_t gfp_mask, unsigned int order,
                struct zonelist *zonelist)
 {
        const int wait = gfp_mask & __GFP_WAIT;
@@ -806,11 +807,14 @@ __alloc_pages(unsigned int __nocast gfp_mask, unsigned int order,
        classzone_idx = zone_idx(zones[0]);
 
 restart:
-       /* Go through the zonelist once, looking for a zone with enough free */
+       /*
+        * Go through the zonelist once, looking for a zone with enough free.
+        * See also cpuset_zone_allowed() comment in kernel/cpuset.c.
+        */
        for (i = 0; (z = zones[i]) != NULL; i++) {
                int do_reclaim = should_reclaim_zone(z, gfp_mask);
 
-               if (!cpuset_zone_allowed(z))
+               if (!cpuset_zone_allowed(z, __GFP_HARDWALL))
                        continue;
 
                /*
@@ -845,6 +849,7 @@ zone_reclaim_retry:
         *
         * This is the last chance, in general, before the goto nopage.
         * Ignore cpuset if GFP_ATOMIC (!wait) rather than fail alloc.
+        * See also cpuset_zone_allowed() comment in kernel/cpuset.c.
         */
        for (i = 0; (z = zones[i]) != NULL; i++) {
                if (!zone_watermark_ok(z, order, z->pages_min,
@@ -852,7 +857,7 @@ zone_reclaim_retry:
                                       gfp_mask & __GFP_HIGH))
                        continue;
 
-               if (wait && !cpuset_zone_allowed(z))
+               if (wait && !cpuset_zone_allowed(z, gfp_mask))
                        continue;
 
                page = buffered_rmqueue(z, order, gfp_mask);
@@ -867,7 +872,7 @@ zone_reclaim_retry:
                if (!(gfp_mask & __GFP_NOMEMALLOC)) {
                        /* go through the zonelist yet again, ignoring mins */
                        for (i = 0; (z = zones[i]) != NULL; i++) {
-                               if (!cpuset_zone_allowed(z))
+                               if (!cpuset_zone_allowed(z, gfp_mask))
                                        continue;
                                page = buffered_rmqueue(z, order, gfp_mask);
                                if (page)
@@ -903,7 +908,7 @@ rebalance:
                                               gfp_mask & __GFP_HIGH))
                                continue;
 
-                       if (!cpuset_zone_allowed(z))
+                       if (!cpuset_zone_allowed(z, gfp_mask))
                                continue;
 
                        page = buffered_rmqueue(z, order, gfp_mask);
@@ -922,7 +927,7 @@ rebalance:
                                               classzone_idx, 0, 0))
                                continue;
 
-                       if (!cpuset_zone_allowed(z))
+                       if (!cpuset_zone_allowed(z, __GFP_HARDWALL))
                                continue;
 
                        page = buffered_rmqueue(z, order, gfp_mask);
@@ -972,7 +977,7 @@ EXPORT_SYMBOL(__alloc_pages);
 /*
  * Common helper functions.
  */
-fastcall unsigned long __get_free_pages(unsigned int __nocast gfp_mask, unsigned int order)
+fastcall unsigned long __get_free_pages(gfp_t gfp_mask, unsigned int order)
 {
        struct page * page;
        page = alloc_pages(gfp_mask, order);
@@ -983,7 +988,7 @@ fastcall unsigned long __get_free_pages(unsigned int __nocast gfp_mask, unsigned
 
 EXPORT_SYMBOL(__get_free_pages);
 
-fastcall unsigned long get_zeroed_page(unsigned int __nocast gfp_mask)
+fastcall unsigned long get_zeroed_page(gfp_t gfp_mask)
 {
        struct page * page;
 
@@ -1745,6 +1750,8 @@ inline void setup_pageset(struct per_cpu_pageset *p, unsigned long batch)
 {
        struct per_cpu_pages *pcp;
 
+       memset(p, 0, sizeof(*p));
+
        pcp = &p->pcp[0];               /* hot */
        pcp->count = 0;
        pcp->low = 2 * batch;