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-rw-r--r--include/linux/suspend.h33
1 files changed, 33 insertions, 0 deletions
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index bf99bd49f8ef..a45b9f514492 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -8,6 +8,7 @@
8#include <linux/notifier.h> 8#include <linux/notifier.h>
9#include <linux/init.h> 9#include <linux/init.h>
10#include <linux/pm.h> 10#include <linux/pm.h>
11#include <linux/mm.h>
11 12
12/* struct pbe is used for creating lists of pages that should be restored 13/* struct pbe is used for creating lists of pages that should be restored
13 * atomically during the resume from disk, because the page frames they have 14 * atomically during the resume from disk, because the page frames they have
@@ -49,6 +50,38 @@ void __save_processor_state(struct saved_context *ctxt);
49void __restore_processor_state(struct saved_context *ctxt); 50void __restore_processor_state(struct saved_context *ctxt);
50unsigned long get_safe_page(gfp_t gfp_mask); 51unsigned long get_safe_page(gfp_t gfp_mask);
51 52
53/* Page management functions for the software suspend (swsusp) */
54
55static inline void swsusp_set_page_forbidden(struct page *page)
56{
57 SetPageNosave(page);
58}
59
60static inline int swsusp_page_is_forbidden(struct page *page)
61{
62 return PageNosave(page);
63}
64
65static inline void swsusp_unset_page_forbidden(struct page *page)
66{
67 ClearPageNosave(page);
68}
69
70static inline void swsusp_set_page_free(struct page *page)
71{
72 SetPageNosaveFree(page);
73}
74
75static inline int swsusp_page_is_free(struct page *page)
76{
77 return PageNosaveFree(page);
78}
79
80static inline void swsusp_unset_page_free(struct page *page)
81{
82 ClearPageNosaveFree(page);
83}
84
52/* 85/*
53 * XXX: We try to keep some more pages free so that I/O operations succeed 86 * XXX: We try to keep some more pages free so that I/O operations succeed
54 * without paging. Might this be more? 87 * without paging. Might this be more?