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authorMauro Carvalho Chehab <mchehab@redhat.com>2013-01-24 15:49:18 -0500
committerMauro Carvalho Chehab <mchehab@redhat.com>2013-01-24 15:49:18 -0500
commita32f7d1ad3744914273c6907204c2ab3b5d496a0 (patch)
tree1c5ae321ee85665707177547c07810ff7e09e1ab /mm/page_isolation.c
parent6b9e50c463efc5c361496ae6a895cc966ff8025b (diff)
parent68d6f84ba0c47e658beff3a4bf0c43acee4b4690 (diff)
Merge branch 'v4l_for_linus' into staging/for_v3.9
* v4l_for_linus: (464 commits) [media] uvcvideo: Set error_idx properly for S_EXT_CTRLS failures [media] uvcvideo: Cleanup leftovers of partial revert [media] uvcvideo: Return -EACCES when trying to set a read-only control Linux 3.8-rc3 mm: reinstante dropped pmd_trans_splitting() check cred: Remove tgcred pointer from struct cred drm/ttm: fix fence locking in ttm_buffer_object_transfer ARM: clps711x: Fix bad merge of clockevents setup ARM: highbank: save and restore L2 cache and GIC on suspend ARM: highbank: add a power request clear ARM: highbank: fix secondary boot and hotplug ARM: highbank: fix typos with hignbank in power request functions ARM: dts: fix highbank cpu mpidr values ARM: dts: add device_type prop to cpu nodes on Calxeda platforms drm/prime: drop reference on imported dma-buf come from gem xen/netfront: improve truesize tracking ARM: mx5: Fix MX53 flexcan2 clock ARM: OMAP2+: am33xx-hwmod: Fix wrongly terminated am33xx_usbss_mpu_irqs array sctp: fix Kconfig bug in default cookie hmac selection EDAC: Cleanup device deregistering path ... Conflicts: drivers/media/pci/dm1105/dm1105.c drivers/media/platform/soc_camera/mx2_camera.c
Diffstat (limited to 'mm/page_isolation.c')
-rw-r--r--mm/page_isolation.c26
1 files changed, 2 insertions, 24 deletions
diff --git a/mm/page_isolation.c b/mm/page_isolation.c
index 9d2264ea4606..383bdbb98b04 100644
--- a/mm/page_isolation.c
+++ b/mm/page_isolation.c
@@ -8,28 +8,6 @@
8#include <linux/memory.h> 8#include <linux/memory.h>
9#include "internal.h" 9#include "internal.h"
10 10
11/* called while holding zone->lock */
12static void set_pageblock_isolate(struct page *page)
13{
14 if (get_pageblock_migratetype(page) == MIGRATE_ISOLATE)
15 return;
16
17 set_pageblock_migratetype(page, MIGRATE_ISOLATE);
18 page_zone(page)->nr_pageblock_isolate++;
19}
20
21/* called while holding zone->lock */
22static void restore_pageblock_isolate(struct page *page, int migratetype)
23{
24 struct zone *zone = page_zone(page);
25 if (WARN_ON(get_pageblock_migratetype(page) != MIGRATE_ISOLATE))
26 return;
27
28 BUG_ON(zone->nr_pageblock_isolate <= 0);
29 set_pageblock_migratetype(page, migratetype);
30 zone->nr_pageblock_isolate--;
31}
32
33int set_migratetype_isolate(struct page *page, bool skip_hwpoisoned_pages) 11int set_migratetype_isolate(struct page *page, bool skip_hwpoisoned_pages)
34{ 12{
35 struct zone *zone; 13 struct zone *zone;
@@ -80,7 +58,7 @@ out:
80 unsigned long nr_pages; 58 unsigned long nr_pages;
81 int migratetype = get_pageblock_migratetype(page); 59 int migratetype = get_pageblock_migratetype(page);
82 60
83 set_pageblock_isolate(page); 61 set_pageblock_migratetype(page, MIGRATE_ISOLATE);
84 nr_pages = move_freepages_block(zone, page, MIGRATE_ISOLATE); 62 nr_pages = move_freepages_block(zone, page, MIGRATE_ISOLATE);
85 63
86 __mod_zone_freepage_state(zone, -nr_pages, migratetype); 64 __mod_zone_freepage_state(zone, -nr_pages, migratetype);
@@ -103,7 +81,7 @@ void unset_migratetype_isolate(struct page *page, unsigned migratetype)
103 goto out; 81 goto out;
104 nr_pages = move_freepages_block(zone, page, migratetype); 82 nr_pages = move_freepages_block(zone, page, migratetype);
105 __mod_zone_freepage_state(zone, nr_pages, migratetype); 83 __mod_zone_freepage_state(zone, nr_pages, migratetype);
106 restore_pageblock_isolate(page, migratetype); 84 set_pageblock_migratetype(page, migratetype);
107out: 85out:
108 spin_unlock_irqrestore(&zone->lock, flags); 86 spin_unlock_irqrestore(&zone->lock, flags);
109} 87}