Messages in this thread Patch in this message | | | From | "Rafael J. Wysocki" <> | Subject | [PATCH -mm 4/6] swsusp: Add resume_offset command line parameter | Date | Wed, 20 Sep 2006 21:46:58 +0200 |
| |
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.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> --- kernel/power/disk.c | 15 +++++++++++++++ kernel/power/power.h | 1 + kernel/power/swap.c | 15 ++++++++++----- 3 files changed, 26 insertions(+), 5 deletions(-)
Index: linux-2.6.18-rc7-mm1/kernel/power/disk.c =================================================================== --- linux-2.6.18-rc7-mm1.orig/kernel/power/disk.c +++ linux-2.6.18-rc7-mm1/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) +{ + loff_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); Index: linux-2.6.18-rc7-mm1/kernel/power/power.h =================================================================== --- linux-2.6.18-rc7-mm1.orig/kernel/power/power.h +++ linux-2.6.18-rc7-mm1/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); Index: linux-2.6.18-rc7-mm1/kernel/power/swap.c =================================================================== --- linux-2.6.18-rc7-mm1.orig/kernel/power/swap.c +++ linux-2.6.18-rc7-mm1/kernel/power/swap.c @@ -160,13 +160,14 @@ static int mark_swapfiles(loff_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; @@ -606,12 +607,16 @@ 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; } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |