From: Yongqiang Yang <xiaoqiangnk@gmail.com>
Date: Wed, 27 Jul 2011 01:51:08 +0000 (-0400)
Subject: ext4: let ext4_group_add_blocks() handle 0 blocks quickly
X-Git-Tag: v3.1-rc1~90^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4740b830ed5720ade6c780dbf3fdfe9089b3552d;p=pandora-kernel.git

ext4: let ext4_group_add_blocks() handle 0 blocks quickly

If ext4_group_add_blocks() is called with 0 block, make it return 0
without doing any extra work.

Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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