On Mon, Sep 17, 2007 at 12:29:51PM -0700, Mingming Cao wrote: > The problem with this patch, as Andreas Dilger pointed today in ext4 > interlock call, for 1k,2k block size ext2/3/4, get_free_pages() waste > 1/3-1/2 page space. > > What was the originally intention to set up slabs for committed_data(and > frozen_buffer) in JBD? Why not using kmalloc? kmalloc is using slabs :) The intent was to avoid the wasted memory, but as we've repeated a gazillion times wasted memory on a rather rare codepath doesn't really matter when you just crash random storage drivers otherwise. - 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
