Linux 2.6.31 Release for Digi ConnectCore Wi-i.MX boards2.6.31-digi-201102101717

5 files changed, 55 insertions, 2 deletions

diff --git a/fs/fat/dir.c b/fs/fat/dir.c
index 530b4ca01510..4ceff5110417 100644
--- a/fs/fat/dir.c
+++ b/fs/fat/dir.c
@@ -758,6 +758,13 @@ static int fat_ioctl_readdir(struct inode *inode, struct file *filp,
 	return ret;
 }
 
+static int fat_ioctl_volume_id(struct inode *dir)
+{
+	struct super_block *sb = dir->i_sb;
+	struct msdos_sb_info *sbi = MSDOS_SB(sb);
+	return sbi->vol_id;
+}
+
 static int fat_dir_ioctl(struct inode *inode, struct file *filp,
 			 unsigned int cmd, unsigned long arg)
 {
@@ -773,6 +780,8 @@ static int fat_dir_ioctl(struct inode *inode, struct file *filp,
 		short_only = 0;
 		both = 1;
 		break;
+	case VFAT_IOCTL_GET_VOLUME_ID:
+		return fat_ioctl_volume_id(inode);
 	default:
 		return fat_generic_ioctl(inode, filp, cmd, arg);
 	}
diff --git a/fs/fat/fat.h b/fs/fat/fat.h
index adb0e72a176d..09305185330f 100644
--- a/fs/fat/fat.h
+++ b/fs/fat/fat.h
@@ -76,6 +76,7 @@ struct msdos_sb_info {
 	const void *dir_ops;		     /* Opaque; default directory operations */
 	int dir_per_block;	     /* dir entries per block */
 	int dir_per_block_bits;	     /* log2(dir_per_block) */
+	unsigned long vol_id;        /* volume ID */
 
 	int fatent_shift;
 	struct fatent_operations *fatent_ops;
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index ea4e6cb29e13..5ff78a202e0a 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -317,10 +317,19 @@ static void part_release(struct device *dev)
 	kfree(p);
 }
 
+static int part_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+	struct hd_struct *part = dev_to_part(dev);
+
+	add_uevent_var(env, "PARTN=%u", part->partno);
+	return 0;
+}
+
 struct device_type part_type = {
 	.name		= "partition",
 	.groups		= part_attr_groups,
 	.release	= part_release,
+	.uevent		= part_uevent,
 };
 
 static void delete_partition_rcu_cb(struct rcu_head *head)
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 6f742f6658a9..a0f94952faf2 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -127,6 +127,8 @@ struct pid_entry {
 	NOD(NAME, (S_IFREG|(MODE)), 			\
 		NULL, &proc_single_file_operations,	\
 		{ .proc_show = show } )
+#define ARD(NAME, MODE, iops, fops)			\
+	NOD(NAME, (S_IFREG|(MODE)), &iops, &fops, {} )
 
 /*
  * Count the number of hardlinks for the pid_entry table, excluding the .
@@ -1043,6 +1045,35 @@ static ssize_t oom_adjust_write(struct file *file, const char __user *buf,
 	return end - buffer;
 }
 
+#ifdef CONFIG_ANDROID
+static int oom_adjust_permission(struct inode *inode, int mask)
+{
+	uid_t uid;
+	struct task_struct *p = get_proc_task(inode);
+	if(p) {
+		uid = task_uid(p);
+		put_task_struct(p);
+	}
+
+	/*
+	 * System Server (uid == 1000) is granted access to oom_adj of all
+	 * android applications (uid > 10000) as and services (uid >= 1000)
+	 */
+	if (p && (current_fsuid() == 1000) && (uid >= 1000)) {
+		if (inode->i_mode >> 6 & mask) {
+			return 0;
+		}
+	}
+
+	/* Fall back to default. */
+	return generic_permission(inode, mask, NULL);
+}
+
+static const struct inode_operations proc_oom_adjust_inode_operations = {
+	.permission	= oom_adjust_permission,
+};
+#endif
+
 static const struct file_operations proc_oom_adjust_operations = {
 	.read		= oom_adjust_read,
 	.write		= oom_adjust_write,
@@ -2531,7 +2562,11 @@ static const struct pid_entry tgid_base_stuff[] = {
 	REG("cgroup",  S_IRUGO, proc_cgroup_operations),
 #endif
 	INF("oom_score",  S_IRUGO, proc_oom_score),
+#ifndef CONFIG_ANDROID
 	REG("oom_adj",    S_IRUGO|S_IWUSR, proc_oom_adjust_operations),
+#else
+	ARD("oom_adj", S_IRUGO|S_IWUSR, proc_oom_adjust_inode_operations, proc_oom_adjust_operations),
+#endif
 #ifdef CONFIG_AUDITSYSCALL
 	REG("loginuid",   S_IWUSR|S_IRUGO, proc_loginuid_operations),
 	REG("sessionid",  S_IRUGO, proc_sessionid_operations),
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 9bd8be1d235c..07376a4a3ed1 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -689,8 +689,6 @@ static ssize_t pagemap_read(struct file *file, char __user *buf,
 	down_read(&current->mm->mmap_sem);
 	ret = get_user_pages(current, current->mm, uaddr, pagecount,
 			     1, 0, pages, NULL);
-	up_read(&current->mm->mmap_sem);
-
 	if (ret < 0)
 		goto out_free;
 
@@ -739,6 +737,7 @@ out_pages:
 		page_cache_release(page);
 	}
 out_free:
+	up_read(&current->mm->mmap_sem);
 	kfree(pages);
 out_mm:
 	mmput(mm);