From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Wed, 9 May 2007 09:33:33 +0000 (-0700)
Subject: use simple_read_from_buffer in kernel/
X-Git-Tag: v2.6.22-rc1~270
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=85badbdf5120d246ce2bb3f1a7689a805f9c9006;p=pandora-kernel.git

use simple_read_from_buffer in kernel/

Cleanup using simple_read_from_buffer() for /dev/cpuset/tasks and
/proc/config.gz.

Cc: Paul Jackson <pj@sgi.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/kernel/configs.c b/kernel/configs.c
index 8fa1fb28f8a7..e84d3f9c6c7b 100644
--- a/kernel/configs.c
+++ b/kernel/configs.c
@@ -61,18 +61,9 @@ static ssize_t
 ikconfig_read_current(struct file *file, char __user *buf,
 		      size_t len, loff_t * offset)
 {
-	loff_t pos = *offset;
-	ssize_t count;
-
-	if (pos >= kernel_config_data_size)
-		return 0;
-
-	count = min(len, (size_t)(kernel_config_data_size - pos));
-	if (copy_to_user(buf, kernel_config_data + MAGIC_SIZE + pos, count))
-		return -EFAULT;
-
-	*offset += count;
-	return count;
+	return simple_read_from_buffer(buf, len, offset,
+				       kernel_config_data + MAGIC_SIZE,
+				       kernel_config_data_size);
 }
 
 static const struct file_operations ikconfig_file_ops = {
Reading git-diff-tree failed