On Sat, Dec 23, 2006 at 02:31:23PM +1100, David Chinner wrote: > > - ext4-delayed-allocation.patch > > delayed allocation itself, enabled by "delalloc" mount option. > > extents support is also required. currently it works only > > with blocksize=pagesize. > > Ah, that's why you can get away with a page flag - you've ignored > the partial page delay state problem. Any plans to use the > existing method in the future so we will be able to use ext4 delalloc > on machines with a page size larger than 4k? I think fixing this up for blocksize < pagesize is an absolute requirement to get things merged. We don't need more filesystems that are crippled on half of our platforms. Note that recording delayed alloc state at a page granularity in addition to just the buffer heads has a lot of advantages aswell and would help xfs, too. But I think it makes a lot more sense to record it as a radix tree tag to speed up the gang lookups for delalloc conversion. - 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
