On Mon, Mar 15, 2010 at 10:50:37PM +0000, Al Viro wrote: > On Mon, Mar 15, 2010 at 06:47:02PM -0400, Jeff Layton wrote: > > > Yeah that would be cleaner on the wire for the create case. It's not > > clear to me how to implement that though. There doesn't appear to be > > a straightforward way to tell the VFS to skip the truncate. > > The plan is to turn most of the guts of do_last() into fs method... For union mounts, we will want to skip the truncate too (or else insinuate ourselves into do_truncate() - less attractive). This is because we want to only copy up the bytes that are not being truncated, instead of copying up the file contents and then throwing them away. What's the timing on the do_last() change? Do you know what branch it will be in? Thanks, -VAL -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
