[PATCH] swsusp: move snapshot functionality to separate file

The following patch moves the functionality of swsusp related to creating and
handling the snapshot of memory to a separate file, snapshot.c

This should enable us to untangle the code in the future and eventually to
implement some parts of swsusp.c in the user space.

The patch does not change the code.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index ba448c760168..380915e9563d 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -74,4 +74,10 @@ void __restore_processor_state(struct saved_context *ctxt);
 extern unsigned long get_usable_page(gfp_t gfp_mask);
 extern void free_eaten_memory(void);
 
+/*
+ * XXX: We try to keep some more pages free so that I/O operations succeed
+ * without paging. Might this be more?
+ */
+#define PAGES_FOR_IO    512
+
 #endif /* _LINUX_SWSUSP_H */