From: Shin Hong <hongshin@gmail.com>
Date: Thu, 11 Jun 2009 00:11:29 +0000 (-0400)
Subject: Btrfs: init worker struct fields before kthread-run
X-Git-Tag: v2.6.31-rc1~380^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fd0fb038d5a308c7faddd1701be5e70aaffec98b;p=pandora-kernel.git

Btrfs: init worker struct fields before kthread-run

This patch fixes a bug which may result race condition
between btrfs_start_workers() and worker_loop().

btrfs_start_workers() executed in a parent thread writes
on workers->worker and worker_loop() in a child thread
reads workers->worker. However, there is no synchronization
enforcing the order of two operations.

This patch makes btrfs_start_workers() fill workers->worker
before it starts a child thread with worker_loop()

Signed-off-by: Chris Mason <chris.mason@oracle.com>
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