[PATCH] xfs: stop the sync worker before xfs_unmountfs

[Mark Tinguely]

On 09/13/12 16:18, Ben Myers wrote:
> Cancel work of the xfs_sync_worker before teardown of the log in
> xfs_unmountfs.  This prevents occasional crashes on unmount like so:
...
> Signed-off-by: Ben Myers<bpm at sgi.com>
>
> Index: xfs/fs/xfs/xfs_super.c
> ===================================================================
> --- xfs.orig/fs/xfs/xfs_super.c
> +++ xfs/fs/xfs/xfs_super.c
> @@ -919,6 +919,7 @@ xfs_fs_put_super(
>   	struct xfs_mount	*mp = XFS_M(sb);
>
>   	xfs_filestream_unmount(mp);
> +	cancel_delayed_work_sync(&mp->m_sync_work);
>   	xfs_unmountfs(mp);
>   	xfs_syncd_stop(mp);
>   	xfs_freesb(mp);
>


Tests successfully on all 3 of the machines that were crashing without 
the patch.

Reviewed-by: Mark Tinguely <tinguely at sgi.com>