aboutsummaryrefslogtreecommitdiff
path: root/kernel/power
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/power')
-rw-r--r--kernel/power/disk.c15
-rw-r--r--kernel/power/power.h1
-rw-r--r--kernel/power/swap.c15
3 files changed, 26 insertions, 5 deletions
diff --git a/kernel/power/disk.c b/kernel/power/disk.c
index b1fb7866b0b..d79feeb4545 100644
--- a/kernel/power/disk.c
+++ b/kernel/power/disk.c
@@ -27,6 +27,7 @@
static int noresume = 0;
char resume_file[256] = CONFIG_PM_STD_PARTITION;
dev_t swsusp_resume_device;
+sector_t swsusp_resume_block;
/**
* power_down - Shut machine down for hibernate.
@@ -423,6 +424,19 @@ static int __init resume_setup(char *str)
return 1;
}
+static int __init resume_offset_setup(char *str)
+{
+ unsigned long long offset;
+
+ if (noresume)
+ return 1;
+
+ if (sscanf(str, "%llu", &offset) == 1)
+ swsusp_resume_block = offset;
+
+ return 1;
+}
+
static int __init noresume_setup(char *str)
{
noresume = 1;
@@ -430,4 +444,5 @@ static int __init noresume_setup(char *str)
}
__setup("noresume", noresume_setup);
+__setup("resume_offset=", resume_offset_setup);
__setup("resume=", resume_setup);
diff --git a/kernel/power/power.h b/kernel/power/power.h
index 210ebba2602..adaf7d4fbda 100644
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -42,6 +42,7 @@ extern const void __nosave_begin, __nosave_end;
extern unsigned long image_size;
extern int in_suspend;
extern dev_t swsusp_resume_device;
+extern sector_t swsusp_resume_block;
extern asmlinkage int swsusp_arch_suspend(void);
extern asmlinkage int swsusp_arch_resume(void);
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index 1b08f46bbb7..aa5a9bff01f 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -161,13 +161,14 @@ static int mark_swapfiles(sector_t start)
{
int error;
- bio_read_page(0, &swsusp_header, NULL);
+ bio_read_page(swsusp_resume_block, &swsusp_header, NULL);
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);
swsusp_header.image = start;
- error = bio_write_page(0, &swsusp_header, NULL);
+ error = bio_write_page(swsusp_resume_block,
+ &swsusp_header, NULL);
} else {
printk(KERN_ERR "swsusp: Swap header not found!\n");
error = -ENODEV;
@@ -184,7 +185,7 @@ static int swsusp_swap_check(void) /* This is called before saving image */
{
int res;
- res = swap_type_of(swsusp_resume_device, 0);
+ res = swap_type_of(swsusp_resume_device, swsusp_resume_block);
if (res < 0)
return res;
@@ -610,12 +611,16 @@ int swsusp_check(void)
if (!IS_ERR(resume_bdev)) {
set_blocksize(resume_bdev, PAGE_SIZE);
memset(&swsusp_header, 0, sizeof(swsusp_header));
- if ((error = bio_read_page(0, &swsusp_header, NULL)))
+ error = bio_read_page(swsusp_resume_block,
+ &swsusp_header, NULL);
+ if (error)
return error;
+
if (!memcmp(SWSUSP_SIG, swsusp_header.sig, 10)) {
memcpy(swsusp_header.sig, swsusp_header.orig_sig, 10);
/* Reset swap signature now */
- error = bio_write_page(0, &swsusp_header, NULL);
+ error = bio_write_page(swsusp_resume_block,
+ &swsusp_header, NULL);
} else {
return -EINVAL;
}