fs/proc/base.c: fix sparse warnings

Index: linux-2.6.11-bk4-sparse/fs/proc/base.c
===================================================================
@@ -702,7 +702,7 @@ static struct file_operations proc_mem_o
 	.open		= mem_open,
 };
 
-static ssize_t oom_adjust_read(struct file *file, char *buf,
+static ssize_t oom_adjust_read(struct file *file, char __user *buf,
 				size_t count, loff_t *ppos)
 {
 	struct task_struct *task = proc_task(file->f_dentry->d_inode);

@@ -722,7 +722,7 @@ static ssize_t oom_adjust_read(struct fi
 	return count;
 }
 
-static ssize_t oom_adjust_write(struct file *file, const char *buf,
+static ssize_t oom_adjust_write(struct file *file, const char __user *buf,
 				size_t count, loff_t *ppos)
 {
 	struct task_struct *task = proc_task(file->f_dentry->d_inode);

@@ -748,8 +748,8 @@ static ssize_t oom_adjust_write(struct f
 }
 
 static struct file_operations proc_oom_adjust_operations = {
-	read:		oom_adjust_read,
-	write:		oom_adjust_write,
+	.read		= oom_adjust_read,
+	.write		= oom_adjust_write,
 };
 
 static struct inode_operations proc_mem_inode_operations = {