On 2012-03-14, at 6:52 PM, Yongqiang Yang wrote: > Here is a proposal to enable ext4 allocate blocks across group boundary. > > Now ext4 allocates blocks within a single block group by locking a > group. Flex_bg puts metadata blocks together, as a result,it > enlarges contiguous blocks. So we can enable ext4 allocate blocks > within a flex block group. Inode allocation takes group lock as block > allocation, I am not sure if we should allocate inode within single > group as before. > > If we do this, then the new group boundary will be flex block group > boundary. I am not sure if it is worth doing. The maximum extent size is the same as a single block group, so there is relatively little value in doing this, IMHO. Cheers, Andreas -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
