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swsusp: use inline functions for changing page flags

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Replace direct invocations of SetPageNosave(), SetPageNosaveFree() etc.  with
calls to inline functions that can be changed in subsequent patches without
modifying the code calling them.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rafael J. Wysocki 2007-05-06 14:50:42 -07:00 • committed by Linus Torvalds
parent 433ecb4ab3
commit 7be9823491
3 changed files with 61 additions and 26 deletions
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33
include/linux/suspend.h
View file

@ -8,6 +8,7 @@
#include <linux/notifier.h>
#include <linux/init.h>
#include <linux/pm.h>
#include <linux/mm.h>
/* struct pbe is used for creating lists of pages that should be restored
* atomically during the resume from disk, because the page frames they have
@ -49,6 +50,38 @@ void __save_processor_state(struct saved_context *ctxt);
void __restore_processor_state(struct saved_context *ctxt);
unsigned long get_safe_page(gfp_t gfp_mask);
/* Page management functions for the software suspend (swsusp) */
static inline void swsusp_set_page_forbidden(struct page *page)
{
SetPageNosave(page);
}
static inline int swsusp_page_is_forbidden(struct page *page)
{
return PageNosave(page);
}
static inline void swsusp_unset_page_forbidden(struct page *page)
{
ClearPageNosave(page);
}
static inline void swsusp_set_page_free(struct page *page)
{
SetPageNosaveFree(page);
}
static inline int swsusp_page_is_free(struct page *page)
{
return PageNosaveFree(page);
}
static inline void swsusp_unset_page_free(struct page *page)
{
ClearPageNosaveFree(page);
}
/*
* XXX: We try to keep some more pages free so that I/O operations succeed
* without paging. Might this be more?