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authorRafael J. Wysocki <rjw@sisk.pl>2010-10-05 00:08:12 +0400
committerRafael J. Wysocki <rjw@sisk.pl>2010-10-17 03:57:49 +0400
commit3624eb04c24861ab296842414f9752a393e68372 (patch)
tree4e92377b27b993488c9270b435bcdd2d6574a386 /kernel/power
parent71c63122c4609a917f14a79c32067a68909fc487 (diff)
downloadlinux-3624eb04c24861ab296842414f9752a393e68372.tar.xz
PM / Hibernate: Modify signature used to mark swap
Since we are adding compression to the kernel's hibernate code, change signature used by it to mark swap spaces, so that earlier kernels don't attempt to restore compressed images they cannot handle. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz>
Diffstat (limited to 'kernel/power')
-rw-r--r--kernel/power/swap.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index 2dfa87869b49..916eaa790399 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -29,7 +29,7 @@
#include "power.h"
-#define SWSUSP_SIG "S1SUSPEND"
+#define HIBERNATE_SIG "LINHIB0001"
/*
* The swap map is a data structure used for keeping track of each page
@@ -195,7 +195,7 @@ static int mark_swapfiles(struct swap_map_handle *handle, unsigned int flags)
if (!memcmp("SWAP-SPACE",swsusp_header->sig, 10) ||
!memcmp("SWAPSPACE2",swsusp_header->sig, 10)) {
memcpy(swsusp_header->orig_sig,swsusp_header->sig, 10);
- memcpy(swsusp_header->sig,SWSUSP_SIG, 10);
+ memcpy(swsusp_header->sig, HIBERNATE_SIG, 10);
swsusp_header->image = handle->first_sector;
swsusp_header->flags = flags;
error = hib_bio_write_page(swsusp_resume_block,
@@ -916,7 +916,7 @@ int swsusp_check(void)
if (error)
goto put;
- if (!memcmp(SWSUSP_SIG, swsusp_header->sig, 10)) {
+ if (!memcmp(HIBERNATE_SIG, swsusp_header->sig, 10)) {
memcpy(swsusp_header->sig, swsusp_header->orig_sig, 10);
/* Reset swap signature now */
error = hib_bio_write_page(swsusp_resume_block,