On 03/27/12 09:34, Christoph Hellwig wrote:
From: Dave Chinner<dchinner@xxxxxxxxxx> For the direct IO write path, we only really need the ilock to be taken in exclusive mode during IO submission if we need to do extent allocation instaled of all the time. Change the block mapping code to take the ilock in shared mode for the initial block mapping, and only retake it exclusively when we actually have to perform extent allocations. We were already dropping the ilock for the transaction allocation, so this doesn't introduce new race windows. Based on an earlier patch from Dave Chinner. Signed-off-by: Christoph Hellwig<hch@xxxxxx>
Looks good. Reviewed-by: Mark Tinguely <tinguely@xxxxxxx> _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
