From: Zheng Liu <wenqing.lz@taobao.com>
Date: Thu, 8 Nov 2012 19:47:52 +0000 (-0500)
Subject: ext4: fix missing call to trace_ext4_ext_map_blocks_exit
X-Git-Tag: v3.8-rc1~89^2~52
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=37794732467dd998a34bfce19738ad3ef1f37507;p=pandora-kernel.git

ext4: fix missing call to trace_ext4_ext_map_blocks_exit

When ext4_ext_handle_uninitialized_extents(), we will directly return
from ext4_ext_map_blocks().  The trace point of
trace_ext4_ext_map_blocks_exit isn't called, and the user doesn't see
any result.  This patch tries to fix this problem.

Meanwhile in ext4_ext_handle_uninitialized_extents it returns errors
or the number of allocated blocks.  So 'ret' variable can be removed
due to previously modifications.

Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
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