/proc/stat: convert to single_open_size()

[firefly-linux-kernel-4.4.55.git] / fs / proc / stat.c

diff --git a/fs/proc/stat.c b/fs/proc/stat.c
index 9d231e9e5f0ef48cd7ef372437d85fbf9b8cbc2e..bf2d03f8fd3e1ae6fec98e5bd7f81bb1410bf6dd 100644 (file)
--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@ -184,29 +184,11 @@ static int show_stat(struct seq_file *p, void *v)
 
 static int stat_open(struct inode *inode, struct file *file)
 {
-       size_t size = 1024 + 128 * num_possible_cpus();
-       char *buf;
-       struct seq_file *m;
-       int res;
+       size_t size = 1024 + 128 * num_online_cpus();
 
        /* minimum size to display an interrupt count : 2 bytes */
        size += 2 * nr_irqs;
-
-       /* don't ask for more than the kmalloc() max size */
-       if (size > KMALLOC_MAX_SIZE)
-               size = KMALLOC_MAX_SIZE;
-       buf = kmalloc(size, GFP_KERNEL);
-       if (!buf)
-               return -ENOMEM;
-
-       res = single_open(file, show_stat, NULL);
-       if (!res) {
-               m = file->private_data;
-               m->buf = buf;
-               m->size = ksize(buf);
-       } else
-               kfree(buf);
-       return res;
+       return single_open_size(file, show_stat, NULL, size);
 }
 
 static const struct file_operations proc_stat_operations = {