Btrfs: init worker struct fields before kthread-run
commitfd0fb038d5a308c7faddd1701be5e70aaffec98b
authorShin Hong <hongshin@gmail.com>
Thu, 11 Jun 2009 00:11:29 +0000 (10 20:11 -0400)
committerChris Mason <chris.mason@oracle.com>
Thu, 11 Jun 2009 00:11:29 +0000 (10 20:11 -0400)
tree50b0f3cda5a957bad1090ec4d7bd4e49f43171da
parent4eedeb75e7f15ffdb12d1ad559b565e7505bdbaf
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>
fs/btrfs/async-thread.c