4 files changed, 41 insertions, 29 deletions

diff --git a/kernel/power/disk.c b/kernel/power/disk.c
index fb8de63c2919..3ec789c6b537 100644
--- a/kernel/power/disk.c
+++ b/kernel/power/disk.c
@@ -16,6 +16,8 @@
 #include <linux/device.h>
 #include <linux/delay.h>
 #include <linux/fs.h>
+#include <linux/mount.h>
+
 #include "power.h"
 
 
@@ -234,6 +236,16 @@ static int software_resume(void)
 {
         int error;
 
+        if (!swsusp_resume_device) {
+                if (!strlen(resume_file))
+                        return -ENOENT;
+                swsusp_resume_device = name_to_dev_t(resume_file);
+                pr_debug("swsusp: Resume From Partition %s\n", resume_file);
+        } else {
+                pr_debug("swsusp: Resume From Partition %d:%d\n",
+                         MAJOR(swsusp_resume_device), MINOR(swsusp_resume_device));
+        }
+
         if (noresume) {
                 /**
                  * FIXME: If noresume is specified, we need to find the partition
diff --git a/kernel/power/main.c b/kernel/power/main.c
index c94cb9e95090..71aa0fd22007 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -19,6 +19,9 @@
 
 #include "power.h"
 
+/*This is just an arbitrary number */
+#define FREE_PAGE_NUMBER (100)
+
 DECLARE_MUTEX(pm_sem);
 
 struct pm_ops * pm_ops = NULL;
@@ -49,6 +52,7 @@ void pm_set_ops(struct pm_ops * ops)
 static int suspend_prepare(suspend_state_t state)
 {
         int error = 0;
+        unsigned int free_pages;
 
         if (!pm_ops || !pm_ops->enter)
                 return -EPERM;
@@ -67,6 +71,16 @@ static int suspend_prepare(suspend_state_t state)
                 goto Thaw;
         }
 
+        if ((free_pages = nr_free_pages()) < FREE_PAGE_NUMBER) {
+                pr_debug("PM: free some memory\n");
+                shrink_all_memory(FREE_PAGE_NUMBER - free_pages);
+                if (nr_free_pages() < FREE_PAGE_NUMBER) {
+                        error = -ENOMEM;
+                        printk(KERN_ERR "PM: No enough memory\n");
+                        goto Thaw;
+                }
+        }
+
         if (pm_ops->prepare) {
                 if ((error = pm_ops->prepare(state)))
                         goto Thaw;
@@ -194,7 +208,7 @@ int software_suspend(void)
 
 int pm_suspend(suspend_state_t state)
 {
-        if (state > PM_SUSPEND_ON && state < PM_SUSPEND_MAX)
+        if (state > PM_SUSPEND_ON && state <= PM_SUSPEND_MAX)
                 return enter_state(state);
         return -EINVAL;
 }
diff --git a/kernel/power/process.c b/kernel/power/process.c
index 0a086640bcfc..3bd0d261818f 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -59,6 +59,7 @@ int freeze_processes(void)
         int todo;
         unsigned long start_time;
         struct task_struct *g, *p;
+        unsigned long flags;
 
         printk( "Stopping tasks: " );
         start_time = jiffies;
@@ -66,12 +67,9 @@ int freeze_processes(void)
                 todo = 0;
                 read_lock(&tasklist_lock);
                 do_each_thread(g, p) {
-                        unsigned long flags;
                         if (!freezeable(p))
                                 continue;
-                        if ((frozen(p)) ||
-                            (p->state == TASK_TRACED) ||
-                            (p->state == TASK_STOPPED))
+                        if (frozen(p))
                                 continue;
 
                         freeze(p);
diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c
index c285fc5a2320..f2bc71b9fe8b 100644
--- a/kernel/power/swsusp.c
+++ b/kernel/power/swsusp.c
@@ -63,6 +63,7 @@
 #include <linux/console.h>
 #include <linux/highmem.h>
 #include <linux/bio.h>
+#include <linux/mount.h>
 
 #include <asm/uaccess.h>
 #include <asm/mmu_context.h>
@@ -869,13 +870,6 @@ extern asmlinkage int swsusp_arch_resume(void);
 
 asmlinkage int swsusp_save(void)
 {
-        int error = 0;
-
-        if ((error = swsusp_swap_check())) {
-                printk(KERN_ERR "swsusp: FATAL: cannot find swap device, try "
-                                "swapon -a!\n");
-                return error;
-        }
         return suspend_prepare_image();
 }
 
@@ -892,14 +886,20 @@ int swsusp_suspend(void)
          * at resume time, and evil weirdness ensues.
          */
         if ((error = device_power_down(PMSG_FREEZE))) {
-                printk(KERN_ERR "Some devices failed to power down, aborting suspend\n");
                 local_irq_enable();
-                swsusp_free();
                 return error;
         }
+
+        if ((error = swsusp_swap_check())) {
+                printk(KERN_ERR "swsusp: FATAL: cannot find swap device, try "
+                                "swapon -a!\n");
+                local_irq_enable();
+                return error;
+        }
+
         save_processor_state();
         if ((error = swsusp_arch_suspend()))
-                swsusp_free();
+                printk("Error %d suspending\n", error);
         /* Restore control flow magically appears here */
         restore_processor_state();
         BUG_ON (nr_copy_pages_check != nr_copy_pages);
@@ -1166,9 +1166,9 @@ static int bio_write_page(pgoff_t page_off, void * page)
 static const char * sanity_check(void)
 {
         dump_info();
-        if(swsusp_info.version_code != LINUX_VERSION_CODE)
+        if (swsusp_info.version_code != LINUX_VERSION_CODE)
                 return "kernel version";
-        if(swsusp_info.num_physpages != num_physpages)
+        if (swsusp_info.num_physpages != num_physpages)
                 return "memory size";
         if (strcmp(swsusp_info.uts.sysname,system_utsname.sysname))
                 return "system type";
@@ -1261,8 +1261,6 @@ static int data_read(struct pbe *pblist)
         return error;
 }
 
-extern dev_t name_to_dev_t(const char *line);
-
 /**
  *      read_pagedir - Read page backup list pages from swap
  */
@@ -1356,16 +1354,6 @@ int swsusp_check(void)
 {
         int error;
 
-        if (!swsusp_resume_device) {
-                if (!strlen(resume_file))
-                        return -ENOENT;
-                swsusp_resume_device = name_to_dev_t(resume_file);
-                pr_debug("swsusp: Resume From Partition %s\n", resume_file);
-        } else {
-                pr_debug("swsusp: Resume From Partition %d:%d\n",
-                         MAJOR(swsusp_resume_device), MINOR(swsusp_resume_device));
-        }
-
         resume_bdev = open_by_devnum(swsusp_resume_device, FMODE_READ);
         if (!IS_ERR(resume_bdev)) {
                 set_blocksize(resume_bdev, PAGE_SIZE);