[PATCH 4/5] mballoc: change comments to ac_g_ex

[Coly Li <i@coly.li>]

Current comments to ac_g_ex, the member of struct
ext4_allocation_context is,
	/* goal request (after normalization) */
This is a little bit confused. In order to make it easier to be
understood, this patch modify the comments as,
	/* goal request (normalized ac_o_ex) */
which means ac_g_ex is a normalized value of ac_o_ex.

Signed-off-by: Coly Li <bosong.ly@taobao.com>
Cc: Alex Tomas <alex@clusterfs.com>
Cc: Theodore Tso <tytso@google.com>
---
  fs/ext4/mballoc.h |    2 +-
  1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/ext4/mballoc.h b/fs/ext4/mballoc.h
index b619322..22bd4d7 100644
--- a/fs/ext4/mballoc.h
+++ b/fs/ext4/mballoc.h
@@ -169,7 +169,7 @@ struct ext4_allocation_context {
  	/* original request */
  	struct ext4_free_extent ac_o_ex;

-	/* goal request (after normalization) */
+	/* goal request (normalized ac_o_ex) */
  	struct ext4_free_extent ac_g_ex;

  	/* the best found extent */
-- 
1.7.3.4