The patch titled
swsusp: add resume_offset command line parameter
has been added to the -mm tree. Its filename is
swsusp-add-resume_offset-command-line-parameter-rev-2.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: swsusp: add resume_offset command line parameter
From: "Rafael J. Wysocki" <rjw@xxxxxxx>
Add the kernel command line parameter "resume_offset=" allowing us to specify
the offset, in <PAGE_SIZE> units, from the beginning of the partition pointed
to by the "resume=" parameter at which the swap header is located.
This offset can be determined, for example, by an application using the FIBMAP
ioctl to obtain the swap header's block number for given file.
Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
Cc: Pavel Machek <pavel@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
kernel/power/disk.c | 15 +++++++++++++++
kernel/power/power.h | 1 +
kernel/power/swap.c | 15 ++++++++++-----
3 files changed, 26 insertions(+), 5 deletions(-)
diff -puN kernel/power/disk.c~swsusp-add-resume_offset-command-line-parameter-rev-2 kernel/power/disk.c
--- a/kernel/power/disk.c~swsusp-add-resume_offset-command-line-parameter-rev-2
+++ a/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.
@@ -404,6 +405,19 @@ static int __init resume_setup(char *str
return 1;
}
+static int __init resume_offset_setup(char *str)
+{
+ sector_t 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;
@@ -411,4 +425,5 @@ static int __init noresume_setup(char *s
}
__setup("noresume", noresume_setup);
+__setup("resume_offset=", resume_offset_setup);
__setup("resume=", resume_setup);
diff -puN kernel/power/power.h~swsusp-add-resume_offset-command-line-parameter-rev-2 kernel/power/power.h
--- a/kernel/power/power.h~swsusp-add-resume_offset-command-line-parameter-rev-2
+++ a/kernel/power/power.h
@@ -42,6 +42,7 @@ extern const void __nosave_begin, __nosa
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 -puN kernel/power/swap.c~swsusp-add-resume_offset-command-line-parameter-rev-2 kernel/power/swap.c
--- a/kernel/power/swap.c~swsusp-add-resume_offset-command-line-parameter-rev-2
+++ a/kernel/power/swap.c
@@ -160,13 +160,14 @@ 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;
@@ -183,7 +184,7 @@ static int swsusp_swap_check(void) /* Th
{
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;
@@ -609,12 +610,16 @@ 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;
}
_
Patches currently in -mm which might be from rjw@xxxxxxx are
origin.patch
usb-allow-both-root-hub-interrupts-and-polling.patch
ohci-remove-existing-autosuspend-code.patch
ohci-add-auto-stop-support.patch
ohci-add-auto-stop-support-hack-hack.patch
uswsusp-add-pmops-prepareenterfinish-support-aka-platform-mode.patch
swsusp-use-suspend_console.patch
swsusp-use-partition-device-and-offset-to-identify-swap-areas.patch
swsusp-rearrange-swap-handling-code.patch
swsusp-use-block-device-offsets-to-identify-swap-locations-rev-2.patch
swsusp-add-resume_offset-command-line-parameter-rev-2.patch
swsusp-add-resume_offset-command-line-parameter-rev-2-fix.patch
swsusp-document-support-for-swap-files-rev-2.patch
reiserfs-make-sure-all-dentries-refs-are-released-before-calling-kill_block_super-try-2.patch
ide-reprogram-disk-pio-timings-on-resume.patch
-
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