From: Miao Xie <miaox@cn.fujitsu.com>
Date: Tue, 29 Jan 2013 10:11:59 +0000 (+0000)
Subject: Btrfs: use the inode own lock to protect its delalloc_bytes
X-Git-Tag: v3.9-rc1~17^2~29^2~48
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=df0af1a57f72c74d53a9377c60ff20095afab97d;p=pandora-kernel.git

Btrfs: use the inode own lock to protect its delalloc_bytes

We need not use a global lock to protect the delalloc_bytes of the
inode, just use its own lock. In this way, we can reduce the lock
contention and ->delalloc_lock will just protect delalloc inode
list.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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