From: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Date: Sat, 12 Jan 2013 21:28:47 +0000 (-0500)
Subject: ext4: use unlikely to improve the efficiency of the kernel
X-Git-Tag: v3.9-rc1~64^2~63
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=aebf02430d25b6bd2b8542126fdcdb90e75a24b8;p=pandora-kernel.git

ext4: use unlikely to improve the efficiency of the kernel

Because the function 'sb_getblk' seldomly fails to return NULL
value,it will be better to use 'unlikely' to optimize it.

Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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