On Wed, Jul 14, 2010 at 04:02:21PM +0800, Shaohua Li wrote: > Add an ioctl to dump btrfs btree_inode's existing pages. Userspace collects such > info and uses it to do metadata readahead. In your tests, how often is the mincore done on metadata? With cow (especially with cow and atime), the metadata blocks are going to change quite a lot. -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
